Collage 700 series LAN Emulation Services User Guide

100-325-01 i
Collage 700 series LAN Emulation Services User Guide
Software Release 1.3
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ii Collage 700 series LAN Emulation Software Service User Guide
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100-325-01 iii
Before you start
This guide explains how to use the LAN Emulation (LANE) Services for the Madge™
Collage™ 700 series Backbone ATM Switches.
This guide does not provide information about installing the above switches or any of the installable
optional modules. For information about installing the switch or the optional modules, refer to the
manuals provided with the hardware.
Audience
This guide is for network administrators. It assumes you are familiar with:
• Local Area Network (LAN) concepts and technical terminology.
• Asynchronous Transfer Mode (ATM) networking concepts and technical terminology.
Safety
For safety reasons, you are advised to read the “Safety Information” section in the hardware
installation guide before you power-up the switch.
The manual
Neither Madge Networks Limited or its affiliated companies (together collectively "Madge") make
any warranties as to the information in this guide. Under no circumstances shall Madge be liable for
costs of procurement of substitute products or services, lost profits, lost savings, loss of information or
data or any other special, indirect, consequential or incidental damages, arising in any way out of the
use of its products, whether or not used in accordance with the user guide.
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iv Collage 700 series LAN Emulation Software Service User Guide
Structure
This user guide is organized as follows:
Chapter 1 Describes the new features and standards that this software release implements.
Chapter 2 Explains the components in LANE Services.
Chapter 3 Explains how to setup LANE Services.
Chapter 4 Describes network management available to manage the switch.
Chapter 5 Explains how to get management access.
Chapter 6 Explains how to manage the LECS.
Chapter 7 Explains how to manage a LES in LANE Services.
Chapter 8 Explains how to configure broadcast control filters in LANE Services.
Chapter 9 Explains how to manage an ELAN in LANE Services.
Chapter 10 Explains how to manage the management LEC.
Appendix A Lists the default LANE parameters for LANE Services.
Appendix B Describes the components in LANE Services.
Appendix C Lists Madge technical support services.
Appendix D Lists the legal information and acknowledgments.
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Contents
Chapter 1 Introduction ...............................................................................................................................1
About this software release .......................................................................................................1
Software release 1.3 ............................................................................................1
Software revision history ...............................................................................................1
Chapter 2 Collage 700 series LANE Services ..........................................................................................3
LANE components in a Collage 700 series switch .................................................................3
The LECS in a Collage 700 series switch ...............................................................................4
Proprietary Madge resilient LECS ...............................................................................5
Changing the priority of a resilient LECS during an election ........................7
The LES and BUS in a Collage 700 series switch .................................................................9
Software release 1.1 - resilient standby LESs .............................................................9
Software release 1.2 - proprietary Madge Distributed LANE Services ..................10
Virtual Channel Connection (VCC) requirements ........................................10
Setting up of distributed LANE Services ..................................................................11
LEC assigned for a distributed ELAN ......................................................................12
The management LEC in a Collage 700 series switch ........................................................13
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vi Collage 700 series LAN Emulation Software Service User Guide
Chapter 3 Getting started with LAN Emulation ................................................................................... 15
Setting up LAN Emulation ................................................................................................... 15
Chapter 4 Using network management .................................................................................................. 17
About TrueView/32 ................................................................................................................ 17
Management tools and device managers .............................................................................. 17
About Collage 700 Manager ....................................................................................... 18
Managing the Collage 700 series switch ........................................................ 18
About LANE Manager ............................................................................................... 19
Chapter 5 Accessing the command-line interface ................................................................................. 21
Getting connected .................................................................................................................. 21
Command hierarchy .................................................................................................... 22
Locating a topic in the command-line interface .................................................................. 23
Chapter 6 Managing the LECS .............................................................................................................. 25
LECS location ......................................................................................................................... 25
Advertised address of a LECS ................................................................................... 26
Viewing the location of the LECS ............................................................................. 27
Changing the location of the LECS .......................................................................... 29
Local simple LECS ......................................................................................... 29
Local Madge resilient LECS .......................................................................... 29
Remote LECS .................................................................................................. 32
Setting priority level for a Madge resilient LECS .................................................... 33
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Managing resilient LECS candidates ....................................................................................34
Displaying a resilient LECS election candidate .......................................................35
Creating a resilient LECS election candidate ...........................................................37
Deleting a resilient LECS election candidate ...........................................................38
Specified ELAN defaults in the LECS ................................................................................39
Viewing default ELANs ..............................................................................................39
Specifying default ELANs ..........................................................................................41
Viewing ATM Forum compliant statistics for the LECS .........................................42
Chapter 7 Managing the LES/BUS .........................................................................................................43
Creating a new LES .....................................................................................................43
Deleting a LES ............................................................................................................45
Viewing all LESs ..........................................................................................................46
Viewing LECs using a specific LES ..........................................................................48
Display ATM Forum compliant statistics for a LES ................................................50
Enabling or disabling a LES .......................................................................................51
Restarting a local LES and BUS .................................................................................52
Changing the ELAN name that the LES will host ..................................................53
Changing the ELAN type of a LES ...........................................................................54
Changing the maximum frame size of a LES ............................................................55
Changing the LES registration mode ........................................................................56
Viewing the LES registration mode ...........................................................................58
Listing the peer LESs in a distributed LANE environment ...................................59
Enabling/disabling the transmit to a LEC via the Multicast Send VCs ..................60
Enabling/disabling the transmit to a LEC via the Multicast Forward Subgroups .62
Display ATM Forum compliant statistics for a BUS ................................................63
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viii Collage 700 series LAN Emulation Software Service User Guide
Chapter 8 Configuring broadcast control filters ..................................................................................... 65
Understanding broadcast control ........................................................................................... 65
LE_ARP filtering ........................................................................................................ 66
ABC filtering ................................................................................................................ 67
Performance ...................................................................................................... 67
Impact of broadcast control on distributed LANE Services .................................... 67
Enabling or disabling ABC .................................................................................................... 68
Summary of filtering information on LES/BUS ................................................................... 69
Configuring All-Routes-Explorer (ARE) filtering ............................................................... 70
Configuring IP ARP-request filtering ................................................................................... 72
Configuring IRS RIP/SAP Suppression (IRSS) filtering ..................................................... 75
Configuring NETBIOS Add-Name-Query (ANQ) filtering .............................................. 78
NETBIOS ANQ retry control .................................................................................... 80
Configuring NETBIOS Name-Caching (NNC) filtering ................................................... 82
NETBIOS timeout control ........................................................................................ 84
Configuring IPX Type 20 filtering ........................................................................................ 86
Managing Adaptive Unicast Control (AUC) filtering .......................................................... 88
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Chapter 9 Managing an ELAN ................................................................................................................91
ELAN database maintenance ................................................................................................91
Viewing default ELANs ..............................................................................................92
Listing all ELANs known to the local LECS ...........................................................93
Creating a new ELAN .................................................................................................94
Deleting an ELAN ......................................................................................................95
Renaming an ELAN ....................................................................................................96
Changing the type of an ELAN .................................................................................97
Changing the maximum frame size of an ELAN ......................................................98
Changing the operating mode of an ELAN ..............................................................99
Changing the automatic registration mode of an ELAN ........................................100
Changing the ELAN ring number ...........................................................................101
Changing the security of an ELAN ..........................................................................102
Managing ELAN clients .......................................................................................................103
Creating an ELAN client mapping ..........................................................................106
Displaying ELAN client mappings ..........................................................................108
Deleting ELAN client mappings .............................................................................109
Changing the formula for LES address that a LEC will call ..................................110
Changing the maximum number of LESs in an ELAN .........................................111
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x Collage 700 series LAN Emulation Software Service User Guide
Chapter 10 Managing the management LEC ........................................................................................ 113
Configuring the management LEC ......................................................................... 113
Viewing information about the management LEC ................................................ 114
Managing the ELAN for the management LEC ................................................... 116
Viewing or changing the ELAN type for the management LEC ......................... 118
Managing a Locally Administered Address for the management LEC ................ 119
Restarting the management LEC ............................................................................ 120
Displaying the LANE-ARP cache ........................................................................... 121
Viewing the management LEC statistics ................................................................ 122
Appendix A Default settings for LANE Services ................................................................................... 125
Appendix B Components in LANE Services .......................................................................................... 127
LAN Emulation .................................................................................................................... 127
The principles of LAN Emulation .......................................................................... 127
Components of LAN Emulation ............................................................................. 127
Communication on an Emulated LAN ................................................................... 129
Discovering the ATM address of the LES .................................................. 129
Discovering the ATM address of another LEC .......................................... 129
Setting up the connection ............................................................................. 130
Transmitting the data .................................................................................... 130
Appendix C Technical support services .................................................................................................. 131
Appendix D Legal information and acknowledgments .......................................................................... 135
Appendix E Index ...................................................................................................................................... 137
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List of LANE commands
LANE ELAN
lane elan autovers....................................................... 100
lane elan client create alias........................................ 107
lane elan client create atm......................................... 106
lane elan client create mac ........................................ 107
lane elan client delete................................................ 109
lane elan client show.................................................. 108
lane elan create............................................................. 94
lane elan delete ............................................................ 95
lane elan les .................................................................. 99
lane elan lesaddress.................................................... 110
lane elan maxframesize................................................ 98
lane elan maxles ......................................................... 111
lane elan rename .......................................................... 96
lane elan ring .............................................................. 101
lane elan security........................................................ 102
lane elan show .............................................................. 93
lane elan type ............................................................... 97
LANE LEC
lane lec arpcache........................................................ 121
lane lec elan................................................................ 116
lane lec laa .................................................................. 119
lane lec restart ............................................................ 120
lane lec show .............................................................. 114
lane lec statistics ........................................................ 122
lane lec type ............................................................... 118
LANE LECS
lane lecs default ........................................................... 40
lane lecs location.......................................................... 27
lane lecs location local ................................................. 30
lane lecs location remote............................................. 32
lane lecs priority........................................................... 33
lane lecs resilient create .............................................. 37
lane lecs resilient delete.............................................. 38
lane lecs resilient show................................................ 35
lane lecs stats................................................................ 42
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LANE LES
lane les busgroups
disable / off............................................................ 62
display.................................................................... 62
enable / on............................................................. 62
lane les busstats ............................................................ 63
lane les clients............................................................... 48
lane les create ............................................................... 44
lane les delete ............................................................... 45
lane les elan................................................................... 53
lane les filter abc
disable.................................................................... 68
enable .................................................................... 68
lane les filter anq
disable.............................................................. 78, 79
enable .................................................................... 78
flush ....................................................................... 79
monitor .................................................................. 79
retry_count............................................................ 81
retry_period........................................................... 80
show....................................................................... 79
lane les filter are
disable ................................................................... 70
enable.................................................................... 70
flush....................................................................... 71
monitor.................................................................. 71
show....................................................................... 71
timeout.................................................................. 71
lane les filter arp
disable ................................................................... 73
enable.................................................................... 73
flush....................................................................... 73
monitor.................................................................. 73
show....................................................................... 73
timeout.................................................................. 74
lane les filter irs
disable ................................................................... 76
enable.................................................................... 76
flush....................................................................... 76
monitor.................................................................. 76
show....................................................................... 77
suffix...................................................................... 76
timeout.................................................................. 77
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lane les filter nnc
disable ................................................................... 83
enable.................................................................... 83
flush....................................................................... 83
forward_timeout................................................... 85
monitor.................................................................. 83
show....................................................................... 83
timeout.................................................................. 85
lane les filter summary................................................. 69
lane les filter t20
disable ................................................................... 86
enable.................................................................... 86
flush....................................................................... 87
monitor.................................................................. 86
show....................................................................... 87
timeout.................................................................. 87
lane les filter unicast
disable ................................................................... 89
enable.................................................................... 89
lane les maxframesize .................................................. 55
lane les mcastsendtx
disable / off ........................................................... 60
display ................................................................... 61
enable / on............................................................. 60
lane les mode
change ................................................................... 56
lane les peers ................................................................ 59
lane les restart .............................................................. 52
lane les show ................................................................ 46
lane les state
disable / off ........................................................... 51
display................................................................... 51
enable / on ............................................................ 51
lane les stats.................................................................. 50
lane les type.................................................................. 54
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Introduction
Chapter 1
Introduction
This chapter provides information about the LANE Services provided in the Madge™ Collage™ 700
series Backbone ATM Switches.
There are two switches in the Collage 700 series:
• Collage 740 Backbone ATM Switch
• Collage 750 Backbone ATM Switch
About this software release
Software release 1.3
There are no additional LAN Emulation (LANE) features in this release.
Software revision history
This software release provided the following features:
• the full LANE suite
The suite consists of a LECS (LAN Emulation Configuration Server), a combined LES (LAN
Emulation Server) and BUS (Broadcast Unknown Server), and a management LEC (LAN
Emulation Client).
• proprietary Madge automatic registration LES
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Chapter 1 Introduction
2 Collage 700 series LAN Emulation Software Service User Guide
This software release provided the following additional features:
• support up to 16 combined LES/BUS pairs
• default token-ring ELANs and default Ethernet ELANs
• resilient LES/BUS support
• a LECS that supports up to 64 ELANs
This software release provides the following additional features:
• proprietary Madge resilient LECS
• proprietary Madge distributed LAN Emulation Services
— support for up to 10 combined LES/BUS pairs per ELAN
— increased support for up to 2,500 LECs per ELAN
— support of any ATM Forum compliant LEC
• broadcast control
The switch can be used intelligently to reduce the amount of broadcast traffic on an ELAN.
— Active Broadcast Control (ABC)
— Adaptive Unicast Control (AUC)
— LE_ARP frame filtering

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Chapter 2
Collage 700 series LANE Services
This chapter describes the features of the LANE Services in a Collage 700 series switch.
Note: It is recommended that, if the LANE Services are to be used, then the LECS, LES, and BUS
reside in a Collage 700 series switch that is running software release 1.2 or later.
For information on the different components of LANE Services see Appendix B, “Components in
LANE Services”.
LANE components in a Collage 700 series switch
The Collage 700 series switch can host one LECS, one management LEC, and multiple combined
LES and BUS. The LES can be disabled and does not have to reside in the same device as the
LECS. The following sections in this chapter list the proprietary features of the LECS, LES, BUS,
and LEC in a Collage 700 series switch.
For a list of the factory-configured default settings for the LANE components in a Collage 700 series
switch see Appendix A “Default settings for LANE Services”.

Chapter 2 Collage 700 series LANE Services
The LECS in a Collage 700 series switch
• by default, the Collage 700 series switch will seek a remote LECS at the WKA
• the following ELANs are defined in a Collage 700 series switch:
— a token-ring ELAN named “Collage700ElanTrn”
— an Ethernet ELAN named “Collage700ElanEth”
— an Ethernet ELAN named “default”
• the Collage 700 series switch LECS can support up to 64 ELANs
• the Collage 700 series switch enables you to specify default ELANs that will be used when a
LEC does not specify the ELAN name but does specify the type of ELAN it wishes to join. You
can also define a default ELAN that will be used when a LEC does not specify both the ELAN
name and the ELAN type.
• the Collage 700 series switch LECS supports the proprietary “Madge automatic LES address
determination method” to locate a suitable LES for an ELAN. All Madge LESs will
automatically register with the LECS and this means you do not have to supply the LES address
when registering with a Madge LES, and if a Madge LES is re-located you do not have to re-
configure the LECS with the LES new address.
• the Collage 700 series switch LECS supports the proprietary Madge resilient LECS to
implement LECS redundancy. On failure of an elected active LECS, resilient LECS in standby
mode will elect a new active LECS. No disruption in the working of LANE Services in the
ATM network will be experienced, providing all resilient LECS have the same database
configurations.

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Proprietary Madge resilient LECS
The proprietary Madge resilient LECS provides automatic redundancy for the active LECS, by
continuously monitoring the status of all resilient LECS.
From the list of available resilient LECSs on the network, the selection of the “active LECS” is done
by a process of election. To carry out this election, all Collage 700 series switches must have the
proprietary Madge Dynamic IISP routing enabled. For information about configuring Dynamic IISP
routing, refer to Collage 700 series Backbone ATM Switch User Guide (part number: 100-239).
Note: If you are not planning to use Dynamic IISP routing or want a Collage 700 series switch to
host a resilient LECS in third party environments, contact Madge Technical Support for
configuration details.
Dynamic IISP routing is used to provide automatic LECS redundancy with the following method of:
— establishing an active mesh of SVCs between the switches hosting resilient LECSs
— discovering and advertising resilient LECSs on the network
— propagating the address of the “active LECS” and of the resilient standby LECSs
Note: To ensure that a standby LECS can smoothly take over the running of the network, if the
active elected LECS fail. You must ensure both switches have the same LANE Services information.
There is no checking of database consistency between switches that are hosting resilient LECSs.

The status of the elected active LECS is continually monitored by the other resilient LECS. If the
elected active LECS fail, another election process will take place to elect a new active LECS from
one of the resilient LECSs. Providing all resilient LECS have the same database configurations,
there will be no disruption in the working of LANE Services in the ATM network.
If your Collage 700 series switch is hosting a local LECS, then you can view the details of other
resilient LECS on the network. For more information about displaying details of other resilient
LECS on the network see “Displaying a resilient LECS election candidate” in Chapter 6,
“Managing the LECS”.
The example below shows the Collage 700 series switch connected via a third party switch. The third
party switch does not support Dynamic IISP routing. It is recommended under these circumstances
that it does not host a resilient LECS.
Figure 2.1 Collage 700 seies switches connected via third party switch
Collage 700
Collage 700
Hosts the active elected LECS at WKA
Collage 700
Looking for a remote LECS at WKA
Looking for a remote LECS at WKA
3rd party switch
switch 3
switch 1
switch 4
Dynamic IISP
Static Route
Static Route
Hosts a resilient LECS
(standby mode)
Collage 700
Hosts a resilient LECS
switch 2
(standby mode)
Routing

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Changing the priority of a resilient LECS during an election
To rig the election of a resilient LECS:
• place the resilient LECS on a higher priority level than other resilient LECSs on the network.
The higher the priority assigned to a resilient LECS, the better the chances of it winning the
election. By default all resilient LECSs when created are assigned a priority of 128.
To stop a resilient LECS from being elected:
• assign it a priority of zero. This enables you to configure the LANE Services on a Collage 700
series switch that is hosting a resilient LECS, without the possibility of the LECS becoming
active.
Changing the priority of a LECS will trigger a new election process and the LECS with the highest
priority will be elected. If two or more LECSs have the same priority level then the LECS with the
higher ATM address will be elected.
Note: If the network is recovering from a failure, the election process is different. The resilient
LECS with the highest up-time will remain the active LECS. This is to minimise network
disruption.
Note: If you configure the priority of a resilient LECS to the highest priority (255), this will force the
LECS to be elected after a network failure regardless of the LECS up-time.
For information on the commands used to change the priority of a resilient LECS see “Setting
priority level for a Madge resilient LECS” in Chapter 6, “Managing the LECS”.

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The LES and BUS in a Collage 700 series switch
• the Collage 700 series switch can provide up to 16 combined LES/BUS each of which can
operate either in token-ring or Ethernet mode
• by default, all Collage 700 series switches on the network have two LES/BUS that will try to
register with the LECS. The default token-ring LES is called “Collage700ElanTrn” and the
default Ethernet LES is called “Collage700ElanEth”.
• all Madge LESs (excluding LESs on the Collage 250/280 Workgroup ATM Switch) support the
proprietary “Madge automatic LES address determination method”. Therefore, all the Madge
LESs can automatically register with a Madge LECS. The benefit of this is that you can relocate
a LES without reconfiguring the LECS or the LECs on the ELAN hosted by the re-located
LES.
Software release 1.1 - resilient standby LESs
Software release 1.1 enables the LECS to support standby LESs. The benefit of this can be seen on
a network where you have several Collage 700 series switches (all with software version 1.1 or later)
and the LECS is located in one of these switches.
You can leave all the LESs in all the other Collage 700 series switches enabled and requesting to host
the same ELAN name (for example, Collage700ElanTrn). Only the first LES to contact the LECS
will host the Collage700ElanTrn ELAN and all other LESs will provide standby support for the
ELAN.
If the original LES fail for any reason, one of the standby LESs will become the main LES and host
the Collage700ElanTrn ELAN. This ensures that the ELAN remains up and available to all LECs
on the ELAN.

Software release 1.2 - proprietary Madge Distributed LANE Services
This is the Madge proprietary system for a distributed LES/BUS in advance of implementing
LANE version 2.
This feature increases the number of clients (LECs) that can be supported per ELAN on multiple
Collage 700 series switches. This is achieved by allowing a single ELAN to be distributed over
multiple LES/BUS pairs in several Collage 700 series switches. Each client connects to a single LES/
BUS as normal but it could be any of the LES/BUS pairs that are supporting the ELAN.
The main features of this system for the Collage 700 series switch:
• the ability to support up to 2,500 LECs per ELAN
• the ability to support up to 10 LES/BUSs per ELAN
• the ability to support any ATM Forum compliant LEC
• it will require a Madge LECS, LES and BUS (version 1.2)
Virtual Channel Connection (VCC) requirements
In a single ELAN that supports the proprietary Madge Distributed LANE Service:
— each LES has a point-to-point and a point-to-multipoint VCC mesh to each of the other
LESs in the ELAN
— each BUS has a point-to-point and a point-to-multipoint VCC mesh to each of the other
BUSs in the ELAN
These connections are used to exchange information about the registered clients in the ELAN.

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Setting up of distributed LANE Services
These are the steps taken by the switch when setting up distributed LANE services:
1 When a distributed LES registers with the LECS, it is assigned a LEC identifier range and given
the addresses of other distributed LESs on the ELAN.
2 The LES will then set up a point-to-point and point-to-multipoint with the other LESs on the
ELAN.
3 Once connections are set up between the distributed LESs on the ELAN, the LESs will
exchange information about their LECs (clients). In this way all the LESs in the ELAN will
know of all other clients on the ELAN, and which LES they are attached to.
4 Each LES will also discover the address of every BUS in the ELAN. This information is then
used to setup a point-to-point and point-to-multipoint VCC mesh between the BUSs.

LEC assigned for a distributed ELAN
When the LEC starts up, it will connect the LECS in the usual way. If there are several different
possible LESs for an ELAN, then the LECS will select which one of the distributed LES addresses
to assign the LEC to.
You can use one of the following methods to :
• round-robin
This is the default method set when creating a new ELAN. No user configuration is required.
The LEC is assigned to the next distributed LES address in sequence (each distributed LES is
used in turn). The LECs assignment to the most suitable LES is left to chance.
• group address
User configuration is required
Every distributed LES on the ELAN is assigned a group address.
Note: the same group address is used by all the distributed LESs. It is this address that is
returned to every LEC by the LECS, when requesting to join the ELAN. If Dynamic IISP
routing is enabled the LEC will connect with the “nearest” distributed LES (the least number
of hops).
• best match with LEC address
No user configuration is required.
The LES address supplied by the LECS is the one which best matches the ATM address of the
LEC. This in practice will also provide the nearest distributed LES to the requesting LEC.
Note: this may not necessarily be true if you are using manually configured addresses or
non-standard ATM addresses for the workgroups, switches, and end-stations that are hosting the
LECs.

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The management LEC in a Collage 700 series switch
• there is one management LEC for managing the Collage 700 series switch. It supports several
high-level protocols such as:
— Telnet for a command-line interface
— UDP for SNMP management and TFTP software upgrades
— BOOTP for obtaining the switch’s IP address from a server
— ICMP for PING inward and outward for IP network configuration diagnosis
• by default, the management LEC uses the Burnt-In Address (BIA) as its MAC address. You can
override this address and assign a Locally Administered Address (LAA). The management LEC
will register this address with the LES that is hosting the ELAN that the LEC wishes to join.
• by default, the management LEC will requests to join a token-ring ELAN. You can assign the
management LEC to register with either a token-ring ELAN or an Ethernet ELAN.

100-325-01 15
GettingStarted
withLANE
Chapter 3
Getting started with LAN Emulation
This chapter describes how to set up LAN Emulation (LANE) services in a Collage 700 series
switch.
Setting up LAN Emulation
If LANE services are to be hosted on a Collage 700 series switch, you must determine the following:
• determine what type of LECS is to be hosted on this Collage 700 series switch. By default the
switch is configured to seek a remote LECS at WKA (Well-Known Address). For information
about the different types of LECS that can be hosted on the switch see Chapter 6, “Managing
the LECS”.
Note: If you are not using Madge proprietary Dynamic IISP Routing, you will need to set up static
routing entries in the Collage 700 routing table to access a remote LECS. For more information about
configuring routing entries, refer to Collage 700 series Backbone ATM Switch User Guide
(part number: 100-324).

Chapter 3 Getting started with LAN Emulation
• if the switch is to host a local LECS, you will need to consider the ELANs that the LECS will
co-ordinate
Note: To ensure that a standby LECS can smoothly take over the running of the network, should
the active elected LECS fail, you must configure the standby switch with the same LANE services
information as the active elected LECS.
There is no checking of database consistency between switches, hosting the resilient LECS.
• determine what ELANs this switch will host and create LESs to host the required ELANs.
For information about configuring local ELANs, see Chapter 9 “Managing an ELAN”.
For information about configuring the local LES, see Chapter 7 “Managing the LES/BUS”.
— By default the Collage 700 series switch hosts the following default ELANs;
• determine if secure “Closed” ELANs are required. By default, when ELANs are created they
are configured as “Open” ELANs.
For closed ELANs, you will need to set-up an ELAN client database on the Collage 700 series
switch. For information about setting up ELAN clients, see Chapter 9 “Managing ELAN
clients”.
ELAN name ELAN LES name
Default token-ring ELAN Collage700ElanTrn Collage700ElanTrn
Default Ethernet ELAN Collage700ElanEth Collage700ElanEth

100-325-01 17
Usingnetwork
management
Chapter 4
Using network management
About TrueView/32
Madge Networks’ TrueView/32 is a comprehensive network management system that consists of a
Windows-based management platform and a range of general tools and device management
applications. TrueView/32 Enterprise includes Ring Manager and LANE Manager applications and
also supports open management platforms, such as HP OpenView and Trivoli/IBM NetView on
Windows 95, Windows NT and Unix management stations.
To obtain information or order management software for a particular management platform, contact
your Madge vendor.
Management tools and device managers
Device managers are a modular series of "plug-in" software applications. They are intuitive easy-to-
use management applications that combine a range of management features with a graphical user
interface to manage particular types of Madge devices that are attached to the network. Other
general management tools, such as the Timed Download tool, provide additional management
functions that you can use to manage different types of object. For example, Alert Manager enables
you to set up and monitor SNMP traps.
The device management applications and management tools that are available are determined by the
products you install, and the choices you make during the installation procedure.
For information about Collage 700 Manager and the management tools, refer to the documentation
provided with the Collage 700 software CD.

Chapter 4 Using network management
About Collage 700 Manager
Collage 700 Manager is a network management application that enables you to manage the
Collage 700 series Backbone ATM Switches using the Simple Network Management Protocol
(SNMP).
Managing the Collage 700 series switch
The management features that you can use depend on whether or not you have established a
management link to the switch that you are managing. If you do not establish a link to the switch,
you can still view information about the switch. However, you cannot change information, enable or
disable ports, implement security features, or download microcode on the selected switch.
The Collage 700 Manager enables you to:
• manage the Collage 700 series switches attached to the network
• manage individual ports on an installed Option Modules
• view physical information about the switch
• monitor traffic on individual port or Option Modules installed in the switch
• manage all LAN Emulation software components in the switch
• reset the switch
• erase the current database configuration and flash memory banks
• download microcode to the switch
• view information about the external Collage Backup Power Supply device, if one is attached to
the switch
To enable you to use the Collage 700 manager, you are provided with comprehensive online help.

100-325-01 19
Usingnetwork
management
About LANE Manager
LANE Manager is a graphical management application that can be purchased as a part of TrueView/
32 Enterprise. It enables you to set up and manage the LAN Emulation (LANE) services in your
ATM network. LAN Emulation enables Token Ring and Ethernet Local Area Network (LAN)
applications to communicate with ATM endstations via an ATM transport medium.
LANE Manager works using the standard SNMP Management Information Bases (MIBs) defined by
the ATM Forum to provide a single management point for all the LANE Services in your ATM
network.
You can use LANE Manager to access LANE services provided by any device that fully supports
these specifications. The Collage 700 series Backbone ATM Switches support the standard MIBs.
Therefore, LANE Manager enables you to administer LANE Services provided by Collage 740 and
Collage 750 switches in your network. If you have installed Collage 700 Manager device
management software, you can also launch the application and use it to manage the same switch from
the management station.

100-325-01 21
Commandline
interface
Chapter 5
Accessing the command-line interface
This chapter explains how to access the command-line interface to manage the switch.
Getting connected
You can access the command-line interface by one of the following methods:
• direct connection using serial interface A, using a VT100 terminal or a PC running a terminal
emulation program. For information about serial interface A, refer to the installation guide
provided with the switch.
• Telnet connection, using a standard Telnet program.
When a terminal is connected to the command-line interface, the switch displays a welcome message
on the terminal screen and logs the user directly to the root of the command-line interface.
Note: You can only access the command-line interface using Telnet, if the management LEC of the
switch is currently joined to an ELAN that is accessible from the network management station and
the IP address of the switch has been set.

Chapter 5 Accessing the command-line interface
Command hierarchy
Figure 5.1 displays the hierarchy of the LANE commands in the command-line interface.
To locate information about a specific LANE command, use the list of commands at the beginning of
this chapter.
Note: Certain functional groups in the hierarchy are also commands in their own right. For example,
the lane elan client show functional group is also a command when entered on its own.
Figure 5.1 Hierarchy of LANE commands from the root LANE directory

100-325-01 23
Commandline
interface
Locating a topic in the command-line interface
To locate a specific topic in the command-line interface, refer to the table below.
For a list of all commands documented in this user guide, refer to the list of commands at the
beginning of the user guide.
Table 5.1 Description of topics covered in this user guide
Topic Refer to ...
Introduction
Includes: Standards implemented in this software release.
Chapter 1
Collage 700 LANE Services
Includes: Specify information about the Collage 700 LANE components.
Chapter 2
Getting started with LAN Emulation. Chapter 3
Using network management to manage the switch Chapter 4
How to use the command-line interface.
Includes: A chart showing the hierarchy of the command-line interface.
Chapter 5
Managing the LECS Chapter 6
Managing the LES and BUS Chapter 7
Configuring broadcast control filters Chapter 8
Managing an ELAN Chapter 9

Managing the management LEC Chapter 10
Default settings for LANE Services Appendix A
Components of LAN Emulation Appendix B
Contacting technical support services Appendix C
Legal information and acknowledgements Appendix D
Table 5.1 Description of topics covered in this user guide
Topic Refer to ...

100-325-01 25
Managingthe
LECS
Chapter 6
Managing the LECS
This chapter describes how to use the command-line interface to manage LECS in a Collage 700
series switch. For information about how to access and use the command-line interface, see
Chapter 5 “Accessing the command-line interface”.
LECS location
Any ATM network using LANE must have one (and only one) active LECS that acts as a central
co-ordinator, making sure that all LECs join the correct ELANs, even though there may be a number
of resilient (standby) LECS.
You can configure the Collage 700 series switch to host the LECS locally, or search for a remote
LECS. A remote LECS can be in another switch, or in an end-station such as a NetWare server.
In a switch running software version 1.2 or later, you can configure the LECS type as a:
• simple LECS
This will force all local LECs to use the local LECS in the Collage 700 series switch.
• Madge resilient LECS
This resilient LECS will enter the election and will need to be elected to become the active
elected LECS. If the resilient LECS is not elected, it will become a standby LECS. For more
information about the election process see “Proprietary Madge resilient LECS” in Chapter 2,
“Collage 700 series LANE Services”.
• remote LECS
This will force all local LECs to use a remote LECS in the network.

Chapter 6 Managing the LECS
Advertised address of a LECS
You can specify the address that the LECS will be advertising. By default, the management LEC
and LES/BUS in a Collage 700 series switch will seek a remote LECS at the WKA.
For information on how to change the location of the LECS see “Changing the location of the
LECS” on page 29.
You can configure a local LECS in a Collage 700 series switch to advertise one of the following
addresses:
• the WKA (Well-Known Address), the ATM Forum defines this address as
47.00.79.00.00.00.00.00.00.00.00.00.00.00.A0.3E.00.00.01.00
• the switch address 19byte address with a specific selector
If you want the switch is look for a remote LECS, you can configure the switch to search for a remote
LECS that is advertising one of the following addresses:
• the WKA
• a specific ATM address on the network
• the address an elected Madge resilient LECS

100-325-01 27
Managingthe
LECS
Viewing the location of the LECS
Note: The output display from the following command will depend on the current location of the
active LECS.
To view the current location of the LECS, use the lane lecs location command:
Command: C750:/>lane lecs location
• If the switch is using its own simple LECS, the following output will be displayed.
Output: There is a local, simple LECS.
It is advertising the ATM Forum Well-Known Address.
Local LECS clients will use the local LECS.
• If the switch is using LECS redundancy and the local resilient LECS is on standby, the
following output will be displayed.
Output: The local resilient LECS is on standby.
It will advertise 39.84.0F.80.01.BC.61.DF.00.24.24.24.00.24.24.24.24.24.24.05
The elected LECS is at NSAP
39.84.0F.80.01.BC.61.DF.00.A4.A4.A4.00.A4.A4.A4.A4.A4.A4.05
• If the switch is looking for a remote LECS, the following output will be displayed.
Output: There is no local LECS.
Local LECS clients will use the LECS at the ATM Forum well-known address.

• If the switch is looking for a remote Madge elected LECS, the following output will be
displayed.
Output: There is no local LECS.
Local LECS clients will use the elected resilient LECS.
The elected LECS is at the ATM Forum well-known address.

100-325-01 29
Managingthe
LECS
Changing the location of the LECS
You can configure the LECS in a Collage 700 series switch to be local or remote.
For a local LECS you can also specify how the LECS will be advertised by the switch. This can be
either as a simple LECS or a Madge resilient LECS. If you have not specify the type of local LECS,
by default, a Madge resilient LECS is created.
Local simple LECS
When creating or changing to a local LECS:
— if a local LECS does not already exist on the switch, a local LECS is created, which all local
clients will be forced to use
— if a resilient LECS exists, it is made simple
Local Madge resilient LECS
When creating or changing to a Madge resilient LECS:
— if a local LECS does not already exist on the switch, a resilient LECS is created
Note: When you create a resilient LECS, it joins the election process and it is this election process
that will elect the “active LECS”.
For more information about the election process see “Proprietary Madge resilient LECS” in
Chapter 2, “Collage 700 series LANE Services”.
— if a simple LECS exists, it will now become a resilient LECS. The address of the LECS is
set as specified. The priority of the LECS is set to the default of 128.

Note: You must also ensure that all Madge resilient LECS are configured with the same LANE
Services information. Should the active LECS fail, a newly elected active LECS can smoothly take
over the running of the network.
No checking of database consistency between LECS is done by the switches. Therefore you must
ensure that switches with Madge resilient LECS have the same configuration set up.
Note: Changing the LECS location may disrupt all LANE connections and any change will take
effect immediately.
To change the location of the local LECS, use the lane lecs location local command:
Command: C750:/>lane lecs location local { wka | <selector>} [ {simple | resilient} ]
Parameters: simple wka An active local simple LECS is created, using the
WKA. Remote clients that make requests for the WKA
will be routed to this LECS via Dynamic IISP.
<selector> An active simple LECS is created, using the address of
the switch with the specified selector.
Manual configuration of other switches is required to
locate this LECS.

100-325-01 31
Managingthe
LECS
resilient wka A Madge resilient LECS is created.
The created LECS will enter the election process and
if elected will be the “active LECS”. Remote clients
that make requests for the WKA will be routed to this
LECS via Dynamic IISP.
<selector> A Madge resilient LECS is created, using the address
of the switch with the specified selector.
The LECS created will enter the election process and
if elected will become the active LECS.
Other Collage 700 series switches running software
release 1.2 or later, will be notified of the election
results via Dynamic IISP routing. Switches that are
configured to use the elected resilient LECS will
direct clients to this newly elected LECS.

Remote LECS
When creating or changing to a remote LECS:
— if a local LECS already exists on the switch, you are warned that it will be deleted and the
switch will look for a LECS at the specified remote address
To change the location of the remote LECS, use the lane lecs remote command:
Note: Changing the LECS location may disrupt all LANE connections and any change will take
effect immediately.
Command: C750:/>lane lecs location remote {elected | wka | <address>}
Parameters: remote elected Switch will wait for notification via Dynamic IISP
routing of the address of the elected resilient LECS.
wka Switch will seek a remote LECS, that is advertising
the WKA.
<atm-addr> Switch will seek a remote LECS, that is advertising
the specific ATM address on the network.

100-325-01 33
Managingthe
LECS
Setting priority level for a Madge resilient LECS
You can rig the election of a resilient LECS, by placing it on a higher priority level than other
LECSs. The higher the priority assigned to a resilient LECS, the better the chances of it winning the
election. By default all resilient LECSs when created are assigned a priority of 128.
You can stop a resilient LECS being elected by assigning it a priority of zero. This enables you to
configure the LANE services on a switch that is hosting a resilient LECS, without the possibility of
the LECS becoming active.
Changing the priority of a LECS will trigger a new election process and the LECS with the highest
priority will be elected. If two or more LECSs have the same priority level, the LECS with the
higher ATM address will be elected.
Note: If the network is recovering from a network failure, the election process is different. The
resilient LECS with the highest up-time will remain the active LECS.
This is to minimise network disruption.
To change the priority of the local LECS, use the lane lecs priority command:
Command: C750:/>lane lecs priority
Parameters: <level> Indicates the level of priority assigned to the Madge resilient
LECS during the election process.
0 - LECS candidate is not available for election.
1 - Lowest priority that can be assigned to a LECS.
128 - Default priority assigned to a LECS.
255 - Highest priority that can be assigned to a LECS.
This will guarantee that the LECS is elected after a network
failure regardless of the LECS up-time.

Managing resilient LECS candidates
Note: If you are not planning to use Dynamic IISP routing or want a Collage 700 series switch to
host a resilient LECS in third party environments, contact Madge Technical Support for
configuration details.
For information on when to create candidates in third party enviornments see “Proprietary Madge
resilient LECS” in Chapter 2, “Collage 700 series LANE Services”.

100-325-01 35
Managingthe
LECS
Displaying a resilient LECS election candidate
To list all the resilient LECS candidates on the network known to the local LECS,
use the lane lecs resilient show command:
Command: C750:/>lane lecs resilient show
Output: Mesh state is running, local LECS state is standby
Resilient LECS table
Index Election Protocol Endpoint Address Type
0 39.84.0F.80.01.BC.61.DF.00.07.A0.3C.00.00.00.6F.07.A0.3C.7F LOCAL
1 39.84.0F.80.01.BC.61.DF.00.07.C0.BD.00.00.00.6F.07.C0.BD.7FSVC
2 39.84.0F.80.01.BC.61.DF.00.07.40.25.00.00.00.6F.07.40.25.7F PDR
Index LECS Address
0 47.00.70.00.00.00.00.00.00.00.00.00.00.00.A0.3E.00.00.01.00
1 47.00.70.00.00.00.00.00.00.00.00.00.00.00.A0.3E.00.00.01.00
2 47.00.70.00.00.00.00.00.00.00.00.00.00.00.A0.3E.00.00.01.00
Index State Link State Priority Uptime Checksum
0 standby reachable 128 0:00:00 11545
1 active reachable 128 14 days, 8:28:29 11545
2 standby reachable 128 0:00:00 11545

The lane lecs resilient show command displays the information described in Table 6.1.
Table 6.1 Output from the lane lec resilient show command
Field Description
Index A unique number assigned for each resilient LECS known to this switch.
Index 0 is assigned to the local LECS.
Election Protocol
Endpoint Address
The full 20-byte ATM address that the resilient LECS uses to communicate
with other resilient LECSs.
Note all resilient LECS have are assigned with selector byte of 7F.
Type Type of resilient LECS. This can be either local, manually configured, or
discovered using Dynamic IISP routing (PDR).
LECS address The full 20 byte ATM address of the LECS.
State The state of the resilient LECS. One of these should be active.
Link State The state of the link to the resilient LECS.
Priority The priority level assigned to the resilient LECS.
Uptime The time in days, hours, minutes and seconds that the resilient LECS has
been active.

100-325-01 37
Managingthe
LECS
Creating a resilient LECS election candidate
In third party enviornments, where Dynamic IISP routing is not available between switches. You will
need to create a communication connection to a remote Madge resilient LECS, by specifying its
election protocol end-point address.
Note: When you create a communication connection to a remote switch hosting a resilient LECS,
the remote Collage 700 series switch will automatically create a respective candidate for the local
LECS.
To create communication connection to a remote candidate, use the lane lecs resilient create command:
Note: Only create remote resilient LECS candidates in third party environments.
Command: C750:/>lane lecs resilient create <address>
Parameters: <address> This is the address the candidate uses in order to communicate
with other candidates on the network.
To construct the address, you must append a selector of “7F” to
the switch address.
Alternatively, type the lane lecs resilient show command on the
remote switch and use the end-point address at index 0.
Note: there must only be one election entry for each resilient
LECS participating in the election.

Deleting a resilient LECS election candidate
You can delete any election candidate that you manually created, using the lane lecs resilient delete
command and specifying the end-point address. The connection to a candidate on a remote
Collage 700 series switch will be dropped which will result in the deletion of that candidate.
To delete a resilient LECS election candidate, use the lane lecs resilient delete command:
Command: C750:/>lane lecs resilient delete <address>

100-325-01 39
Managingthe
LECS
Specified ELAN defaults in the LECS
Viewing default ELANs
When a LEC contacts the LECS, it usually specifies the ELAN name or the ELAN type that it
wants to join. You can define up to 64 different ELAN names in a Collage 700 series switch LECS.
You can define the default ELANs for switches hosting a local LECS. These are the ELANs that a
LEC should join if it only specifies the ELAN type and not the name of a ELAN.
In cases where the LEC has not specified the ELAN name or the ELAN type, you can set up a
default ELAN that will be used.
The following default ELAN names are defined in a Collage 700 series switch:
• a token-ring ELAN - “Collage700ElanTrn”
• an Ethernet type ELAN - “Collage700ElanEth”
• an unspecified type ELAN - No default ELAN name is specified
The ELAN name specified here will be used when a LEC does not provide the ELAN name
nor the ELAN type that it wants to join.
Note: You can only view and configure the ELANs if you are hosting a local LECS or a resilient
LECS in your Collage 700 series switch.

To display the default ELANs that have been specified in the LECS, use the lane lecs default
command:
To change the ELAN names for the default ELAN names, see “Specifying default ELANs” on
page 41.
Command: C750:/>lane lecs default
Output: Default Token Ring ELAN: Collage700ElanTrn
Default Ethernet ELAN: default
Default ELAN for unspecified type: default

100-325-01 41
Managingthe
LECS
Specifying default ELANs
For information on default ELANs, see “Viewing default ELANs” on page 39.
To specify a default ELAN, use the lane lecs default command:
Command: C750:/>lane lecs default <type> <name>
Example: C750:/>lane lecs default token-ring Collage700ElanTrn
Parameters: <type> The type of ELAN that a LEC or LES asks to join or host.
You can select one of the following types:
“token-ring” - specifies a token-ring ELAN.
“ethernet” - specifies an Ethernet ELAN.
“unspecified” -to be used when neither the ELAN name nor a
ELAN type has been specified.
<name> The name of the ELAN to use when a LEC does not specify
the ELAN.
If you want to remove a default ELAN name, enter none.

Viewing ATM Forum compliant statistics for the LECS
If the LECS is local, you can view the ATM Forum compliant statistics that have been gathered for
the LECS. The statistics are continuously monitored and updated by the switch.
To view the ATM Forum compliant statistics for the local LECS, use the lane lecs stats command:
Command: C750:/>lane lecs stats
Output: control packets in 14039
successful config requests 12651
malformed config requests 0
invalid config request parameters 52
rejected due to insufficient resources 0
rejected due to security restrictions 0
rejected because LECID is not zero 0
rejected due to invalid LAN destination 0
rejected due to invalid ATM address 0
rejected because Client is not recognized 0
rejected due to conflicting parameters 0
rejected due to insufficient info 836

100-325-01 43
Managingthe
LES/BUS
Chapter 7
Managing the LES/BUS
This chapter describes how to use the command-line interface to manage the LES/BUS in a
Collage 700 series switch. For information about how to access and use the command-line interface
see Chapter 5, “Accessing the command-line interface”.
Creating a new LES
The Collage 700 series switch can provide up to 16 combined LES/BUS. You can configure each
LES to be either a token-ring or Ethernet ELAN.
If the LECS is hosted in a Collage 700 series switch, the Madge LES can use the proprietary “Madge
automatic LES address determination method” to register with the LECS. For more information
about the proprietary method and different types of LES modes supported, see Chapter 2
“Collage 700 series LANE Services”.
When creating a new LES, note the following:
• if the switch hosting the LECS is currently running:
— software version 1.2 or later, the LES mode can be set to “distributed”, “standby”, “single”
or “manual”
— software version 1.1, the LES mode can be set to “standby”, “single” or “manual”
— software version 1.0, the LES mode must be set to “single” or “manual”
• if the LECS is hosted in a non-Madge device then the LES mode should be set to “manual”

Chapter 7 Managing the LES/BUS
Note: If your LES mode is set to “manual” and you move the LES location (by changing the LES
address), you must manually re-configure the LECS to find the LES at its new location.
Note: You should treat Collage 250/280 as non-Madge devices for the purpose of creating a LES.
To create a new LES in the switch, use the lane les create command.
Command: C750:/>lane les create <elan-name> <mode> <type> <les-selector> <bus-selector>
Example: C750:/>lane les create marketing_trn single token-ring 82 83
Parameters: <elan-name> Enter the name of the ELAN that the new LES will host.
The ELAN name should be unique within the ATM
network. This parameter is case-sensitive.
<mode> Enter the mode type as either “distributed”, “standby”,
“single”, or “manual”. See above explanation for correct
mode usage.
• distributed - automatic registration for distributed LESs.
• standby - automatic registration with standby support.
• single - automatic registration without standby support.
• manual - manual registration.

100-325-01 45
Managingthe
LES/BUS
Note: When you create a LES, each selector you enter must be unique on the switch. You can use
the lane les show command to view a list of all selectors currently in use.
Deleting a LES
To delete a LES, use the lane les delete command.
Note: The above command will take immediate effect.
You must use this command with care as all LECs will be thrown off the ELAN hosted by the LES.
<type> Enter the type of LES ELAN as either “token-ring” or
“ethernet”.
<les-selector> Enter the 1 or 2 digit hexadecimal ATM selector for the
LES.
<bus-selector> Enter the 1 or 2 digit hexadecimal ATM selector for the
associated BUS functions.
Command: C750:/>lane les delete <elan-name>
Example: C750:/>lane les delete marketing_trn
This will force all attached LECs off the ELAN - do you want to continue (Y/N)?
y
Done!

Viewing all LESs
To list all the LESs currently held in your Collage 700 series switch database, use the lane les show
command.
If you enter the name of the ELAN that the LES is hosting, the lane les show command will display
more details regarding the specified LES.
Command: C750:/>lane les show
Output: Selectors
Name Type Enabled LES BUS Clients
Collage700ElanTrn Token Ring Yes 01 02 3
Collage700ElanEth Ethernet Yes 03 04 4
default Ethernet No 05 06 0
marketing_trn Token Ring Yes 82 83 3
List of all selectors now in use:
(01) (02) (03) (04) (05) (06) (80) (81) (82) (83)
Command: C750:/>lane les show [<elan-name>]
Example: C750:/>lane les show Collage700ElanTrn
Information for Emulated LAN 'Collage700ElanTrn'
Type: Token Ring
Maximum frame size (bytes): 18190
LES address: 39.00.00.00.00.00.00.00.00.6F.07.80.E0.00.00.6F.07.80.E0.01
BUS address: 39.00.00.00.00.00.00.00.00.6F.07.80.E0.00.00.6F.07.80.E0.02
LES registration mode: Auto
LES registration mode auto version: Single (Num Peer LESs = 2)
The LES is actively running the elan (Num Clients = 3)

100-325-01 47
Managingthe
LES/BUS
The lane les show command displays the information described in Table 7.1.
Table 7.1 Output from the lane les show command
Field Description
Information The name of the ELAN the LES is hosting.
Type The type of ELAN that the LES has join.
Maximum frame size The maximum frame size this ELAN can support.
LES address The ATM address of the LES.
BUS address The ATM address of the BUS.
LES registration mode The registration mode of the LES.
LES registration mode
(auto version)
Displays the type of automatic registration method for this LES. The
type of automatic registration can be one of the following;
“Distributed”, “Standby”, “Single”, or “Manual”.
The number of peer LES known to this LES. For more details of these
clients, see “Listing the peer LESs in a distributed LANE
environment” on page 59.
LES status The status of the LES on the ELAN.
The number of clients hosted by this LES. For more details of these
clients, see “Viewing LECs using a specific LES” on page 48.

Viewing LECs using a specific LES
To list all the LECs (clients) currently using a specific LES, use the lane les clients command.
Command: C750:/>lane les clients <elan-name>
Example: C750:/>lane les clients Collage700ElanTrn
Parameter: <elan-name> The name of the ELAN that hosts the LES. This
parameter is case-sensitive.
Output: Client ID: 1
Address: 39.00.00.00.00.00.00.00.00.6F.07.80.E0.00.00.6F.07.80.E0.81
Registered MAC addresses:
00.00.6F.07.80.E0
Client ID: 2
Address: 39.00.00.00.00.00.00.00.00.6F.07.80.E0.00.00.6F.00.28.05.82
00.00.F6.00.14.A3
Registered Route Descriptors:
1-618
Client ID: 3
Address: 39.84.0F.80.01.BC.61.DF.00.07.80.20.00.00.00.6F.CA.00.05.81
00.00.F6.53.00.AD
Registered Route Descriptors:
1-116

100-325-01 49
Managingthe
LES/BUS
The lane les clients command displays the information described in Table 7.2.
Table 7.2 Output from the lane les clients command
Field Description
Client ID Displays the LEC id for each client that is registered with the LES.
Address The ATM address of the client.
Registered MAC
addresses
The MAC address of the client.
Registered Route
Descriptors
If the client is a source-routing bridge, the route descriptors are also
displayed.

Display ATM Forum compliant statistics for a LES
To display the ATM Forum compliant statistics for a LES, use the lane les stats command.
Command: C750:/>lane les stats <elan-name>
Parameters: <elan-name> The ELAN name that hosts the LES.
This parameter is case-sensitive.
Example: C750:/>lane les stats Collage700ElanTrn
Output: Number of successful Join responses 23
Number of version not supported errors 0
Number of invalid request parameters errors 0
Number of duplicate LAN destination errors 0
Number of duplicate ATM address errors 0
Number of insufficient resources to grant errors 0
Number of access denied for security reasons errors 0
Number of invalid LEC ID errors 0
Number of invalid LAN destination errors 0
Number of invalid ATM address errors 0
Number of mal formed request 0
Number of registration failures 0
Number of LE_ARP_REQUEST frames received by the LES 4498
Number of LE_ARP_REQUESTs that the LES forwarded 2

100-325-01 51
Managingthe
LES/BUS
Enabling or disabling a LES
To enable or disable a LES, use the lane les state command.
Note: The above command will take immediate effect. You must use the command with care as all
LECs will be thrown off the ELAN hosted by the LES.
To display the current status of a LES, specify the name of the ELAN that currently hosts the LES.
Command: C750:/>lane les state <elan-name> [<param>]
Parameters: <elan-name> The name of the ELAN that currently hosts the LES that you
want to change or display. This parameter is case-sensitive.
<param> To activate the LES enter either “on” or “enable”.
To deactivate the LES enter “off” or “disable”.
Command: C750:/>lane les state <elan-name>
Example: C750:/>lane les state Collage700ElanTrn
LES 'Collage700ElanTrn' is enabled

Restarting a local LES and BUS
Certain changes made to the characteristic of a LES are not immediate. For these changes to take
effect, restart the LES.
Note: When restarting a LES, all attached LECs will be thrown off the ELAN hosted by the LES.
But the LECs will rejoin the ELAN when the LES restarts, if the ELAN still meets the LEC
criteria. The restart command also effects the BUS functions.
To restart a local LES and BUS, use the lane les restart command.
Command: C750:/>lane les restart <elan-name>
want to restart. This parameter is case-sensitive.

100-325-01 53
Managingthe
LES/BUS
Changing the ELAN name that the LES will host
You can change the name of the ELAN that is currently hosted by a LES. The new ELAN must be
somewhere on the network and be known to the LECS that your LES is hosting.
To change the ELAN name that the LES will host, use the lane les elan command.
Note: The above command will take immediate effect. You must use this command with care as all
LECs will be thrown off the ELAN hosted by the LES. If a LEC is configured to use the old ELAN
name, you must manuually reconfigured it to use the new ELAN name.
Command: C750:/>lane les elan <old-name> <new-name>
Example: C750:/>lane les elan marketing_trn mrk_trn
Parameters: <old-name> The current name of the ELAN that is hosted by
the LES that you want to change.
<new-name> The new ELAN that is somewhere on the network
and is known to the LECS that the local LES will
host. This parameter is case-sensitive.

Changing the ELAN type of a LES
You can change the type of ELAN that the LES will host. The type must be that of an ELAN
somewhere on the network that is known to the LECS that the local LES will host.
Note: You must disable the LES before you use the above command. The change will only take
effect when the LES is re-enabled.
To change the ELAN type that a LES will host, use the lane les type command.
Note: If you do not enter the last parameter for the above command, the current ELAN type will be
displayed.
Command: C750:/>lane les type <elan-name> <type>
Parameters: <elan-name> The name of the ELAN that currently hosts the LES that
you want to change. This parameter is case-sensitive.
<type> This can be either “ethernet” or “token-ring” and will
select the type of ELAN supported by the local LES.

100-325-01 55
Managingthe
LES/BUS
Changing the maximum frame size of a LES
You can change the maximum frame size that the LES will host on an ELAN.
Note: You must disable the LES before you use the above command. The change will only take
effect when the LES is re-enabled.
To change the ELAN type that a LES will host, use the lane les maxframesize command.
Note: If you do not enter the last parameter for the above command, the current maximum frame
size will be displayed for the selected ELAN.
Command: C750:/>lane les maxframesize <elan-name> <framesize>
want to change. This parameter is case-sensitive.
<framesize> This is the maximum frame size that is the LES will support.
1516 or 9234 are the valid frame sizes for Ethernet ELANs.
4544 or 18190 are the valid frame sizes for Token Ring
ELANs.

Changing the LES registration mode
Before you change the registration mode of a LES, you must be aware of the mode of the ELAN that
it will be hosting and that the choice of mode is supported by the device containing the LECS.
Refer to Table 7.3 a list of compatible LES and ELAN modes that should be used.
By default for the pre-defined ELANs, the LES mode is set to register automatically and the LES
modes are set to:
• “distributed” when running software version 1.2 or after an upgraded from software version 1.1
• “standby” when running software version 1.1
To change the registration mode of the LES, enter the lane les mode command.
Table 7.3 Compatible LES and ELAN modes
LES mode LECS ELAN mode
distributed auto
standby auto
single auto
manual manual
Command: C750:/>lane les mode <elan-name> {distributed | standby | single | manual}
Example: C750:/>lane les mode marketing_trn standby
want to change. This parameter is case-sensitive.

100-325-01 57
Managingthe
LES/BUS
Note: For information about the proprietary “Madge automatic LES address determination
method”, see “Creating a new LES” on page 43.
Note: The above command will take immediate effect. You must use this command with care as all
LECs will be thrown off the ELAN hosted by the LES.
distributed The LES will register with the LECS using the proprietary
“Madge automatic LES address determination method” and
will act as a distributed LES.
standby The LES will register with the LECS using the proprietary
will act as a “single” mode LES but support standby resilient
LES.
single The LES will register with the LECS using the proprietary
will act as a “single” mode LES, it will not support standby
LES.
manual The LES will use the ATM Forum compliant method to
manually register the LES with the LECS.

Viewing the LES registration mode
To display the registration mode of a LES, use the lane les mode command.
Command: C750:/>lane les mode <elan-name>
Example 1: C750:/>lane les mode Collage700ElanTrn
Output: LES ‘Collage700ElanTrn’ registers automatically
The LES can act as a standby LES
Example 2: C750:/>lane les mode Collage700ElanEth
Output: LES ‘Collage700ElanEth’ registers automatically
The LES can act as a distributed LES

100-325-01 59
Managingthe
LES/BUS
Listing the peer LESs in a distributed LANE environment
You can lists the ATM address and LEC id range of all peer LESs that a specified distributed LES
knows about.
To display a list of the peer LESs in a distributed LANE environment, use the lane les peers
command.
Command: C750:/>lane les peers <elan-name>
Parameters: <elan-name> The name of the ELAN that currently hosts the distributed
LES. This parameter is case-sensitive.
Parameters: C750:/>lane les peer Collage700ElanEth
Peer LES ATM address LEC ID Range
39.84.0F.80.01.BC.61.DF.00.07.80.20.00.00.00.6F.07.80.20.01 1 - 1024
39.84.0F.80.01.BC.61.DF.00.07.80.20.00.00.00.6F.07.80.70.01 1025 - 2048

Enabling/disabling the transmit to a LEC via the Multicast Send VCs
By default this feature is disabled. It is the ability to transmit from a BUS to a LEC in a backwards
direction via a point-to-point Multicast Send VC (Virtual Channel). If one or more LECs does not
support this unusual use of the Multicast Send VC, you must not enable this parameter.
Note: You must enable this parameter, to run the following Active Broadcast Control (ABC) filters:
- ARP filter (for IP ARP frames)
- NETBIOS Name-Caching filter (for NETBIOS broadcast frames)
For information about the different ABC filters that you can enable for an ELAN see Chapter 8,
“Configuring broadcast control filters”.
To enable or disable the ability to transmit to a LEC via Multicast Send VC, use the lane les
mcastsendtx command.
Command: C750:/>lane les mcastsendtx <elan-name> [<param>]
Parameters: <elan-name> The name of the ELAN that currently hosts the BUS that you
<param> To enable a BUS to transmit to a LEC via Multicast Send VCs
enter either “on” or “enable”.
To disable BUS to transmit to a LEC via Multicast Send VCs
enter either “off” or “disable”.

100-325-01 61
Managingthe
LES/BUS
To view the current transmit status of the Mulitcast Send VC, specify the name of the ELAN that
currently hosts the BUS.
Example: C750:/>lane les mcastsendtx Collage700ElanTrn
Output C750:/>lane les mcastsendtx Collage700ElanTrn
LES-BUS 'Collage700ElanTrn' has transmit on Multicast Send VCs Enabled

Enabling/disabling the transmit to a LEC via the Multicast Forward Subgroups
By default this feature is enabled. It is the ability to transmit from a BUS to a LEC in a backwards
direction via a point-to-point Multicast Forward Subgroups.
Note: If you disable this parameter, the IRS filter for ABC will not work. For information about the
IRS filter see “Configuring IRS RIP/SAP Suppression (IRSS) filtering” in Chapter 8 “Configuring
broadcast control filters”.
To enable or disable the ability to transmit to a LEC via Multicast Forward Subgroup, use the lane les
busgroups command.
To view the current transmit status of the Mulitcast Forward Subgroups, specify the name of the
ELAN that currently hosts the BUS.
Command: C750:/>lane les busgroups <elan-name> [<param>]
Parameters: <elan-name> The name of the ELAN that currently hosts the BUS that you
<param> To enable a BUS to transmit to a LEC via Multicast Forward
Subgroups enter either “on” or “enable”.
To disable BUS to transmit to a LEC via Multicast Forward
Subgroups enter either “off” or “disable”.
Example: C750:/>lane les busgroups Collage700ElanEth
Output: C750:/>lane les mcastsendtx Collage700ElanEth
LES-BUS 'Collage700ElanEth' has transmit on Multicast Forward subgroups Enabled

100-325-01 63
Managingthe
LES/BUS
Display ATM Forum compliant statistics for a BUS
To display the ATM Forum compliant statistics for a BUS, use the lane les busstats command.
Command: C750:/>lane les busstats <elan-name>
Parameters: <elan-name> The ELAN name that hosts the BUS.
Example: C750:/>lane les busstats Collage700ElanTrn
Output: Number of frames discarded due to resource error 0
Number of octets that this BUS has received 413615667
Number of unicast data frames / control frames 591906
Number of multicast frames this BUS has received 1590697
Number of frames dropped by BUS due to time out 0
Number of unsuccessful multicast send connection attempts 0
Number of unsuccessful multicast forward connection attempts 0

100-325-01 65
Managing
broadcastfilters
Chapter 8
Configuring broadcast control filters
This chapter describes how to use the command-line interface to configure broadcast control filters
in a Collage 700 series switch. For information about how to access and use the command-line
interface, see Chapter 5 “Accessing the command-line interface”.
Understanding broadcast control
The purpose of broadcast control is to intelligently reduce the amount of broadcast traffic on LANs
interconnected via switches or similar devices on a network. This is done by configuring filters that
reduce the number of unnecessary broadcast (BUS) traffic on each ELAN.
Broadcast traffic is used to register stations with the network or find the location of other network
resources. In general, any frames sent to the BUS are broadcast to every LEC in the ELAN.
This can result in a number of problems, for example:
• the ELAN slows down because the BUS is too busy
• the ELAN slows down because the LECs are too busy processing frames that were not intended
for them

Chapter 8 Configuring broadcast control filters
There are three basic broadcast control techniques implemented in the Collage 700 series switch
running software version 1.2 or later.
• Adaptive Unicast Control (AUC)
This works on unicast frames and attempts to reduce the number of broadcasts inside an ELAN.
For more information about AUC, see “Managing Adaptive Unicast Control (AUC) filtering” on
page 88.
• Active Broadcast Control (ABC)
This works on broadcast and explorer frames, in an attempt to reduce the number of broadcasts
inside an ELAN. It also limits the number of ARE frames crossing the network.
• LE ARP filtering
This works on the LANE LE_ARP frames and the switch intelligently reduces the number of
broadcasts. For more information on LE_ARP filtering, see “LE_ARP filtering” on page 66.
LE_ARP filtering
You can reduce the amount of LANE LE_ARP traffic being broadcasted by forwarding LES_ARP
REQUEST frames only to “proxy” LECs on a special point-to-multipoint VC. By default, this
feature is enabled for all Collage 700 series switch LES (version 1.2 or later).
Normally, when a LES receives a LE_ARP_REQUEST frame from a LEC, it will first check its
table of ELAN clients. If a match is found, the LES sends an LE_ARP_RESPONSE frame directly
to the LEC. Otherwise, the LES forwards the frame to all LECs in the ELAN.
However, if no match is found, the LE_ARP_REQUEST frame needs only to be sent to the proxy
LECs and not to all LECs in the ELAN. The Collage 700 series switch does this by setting up a
separate point-to-multipoint VC for the proxy LECs.

100-325-01 67
Managing
broadcastfilters
ABC filtering
Note: ABC filtering is designed to be a plug-and-play technology that requires minimum set-up and
configuration. By default the above broadcast control filters are disabled.
Performance
Broadcast control is enabled on a per ELAN basis. If a switch hosts several ELANs, it can have
several broadcast control instances running. This is not a good idea because broadcast control
requires a substantial amount of memory for its caches.
Note: It is recommended that only one ELAN is hosted on a switch which has ABC enabled.
Impact of broadcast control on distributed LANE Services
With distributed LANE, there can be several BUS instances and it is inefficient to have all these
BUSs burdened with the same broadcasts. Therefore, when a BUS receives a broadcast from an
attached LEC, it will process it for broadcast control, and send it to the attached LECs as in the non-
distributed case. If the result is that the frame only needs to go to a single LEC attached to this BUS,
the frame does not need to be broadcast to other BUSs. In all other cases, the frame will be forwarded
to all other BUSs.
Note: Disabling ABC on a single BUS will disable filtering on all broadcasts coming from the LECs
attached to the BUS in question. But filtering may not be disabled on broadcasts going to those
LECs, because another BUS in the network may be filtering the broadcasts.

Enabling or disabling ABC
ABC filtering is enabled on a per ELAN basis. When ABC filtering is enabled it will require a
substantial amount of the switch’s resources (memory) for its caches. You can free these resources
when you are not using any ABC filtering, by disabling ABC.
Broadcast control is enabled on a per ELAN basis. If a switch hosts several ELANs, it can have
several broadcast control instances running. Madge advises that you do not have more than one
ELAN running broadcast control on a switch. This is because broadcast control requires a substantial
amount of memory for its caches.
To enable or disable ABC filtering on the LES and BUS, use the lane les filter abc command.
Note: If you omit the last parameter, the filtering status currently in use will be displayed for the
specified ELAN.
Command: C750:/>lane les filter abc <elan-name> {enable | disable}
Parameters: <elan-name> The name of the ELAN that currently hosts the LES/BUS.
[enable |disable] Enables or disables filtering for the specified ELAN.
By default, ABC filtering is disabled.

100-325-01 69
Managing
broadcastfilters
Summary of filtering information on LES/BUS
To display the summary of filtering information on the LES and BUS, use the lane les filter summary
command.
Command: C750:/>lane les filter summary <elan-name>
Parameter: <elan-name> The name of the ELAN that currently hosts the LES/BUS.
Example: C750:/>lane les filter summary Collage700ElanTrn
Output: ABC -state-- ----hit---- ----filtered-------- -parameters-
----total--- -%-
ANQ DISABLED 0 --- Retries: period 5.0secs count 2
ARE DISABLED 0 0 --- timeout 1.0secs
ARP DISABLED 0 0 --- timeout 600.0secs
IRS DISABLED 0 0 --- timeout 600.0secs
NNC DISABLED 0 0 --- timeout 720.0secs fwd_timeout 0.4secs
T20 DISABLED 0 0 --- timeout 0.0secs

Collage 700 series LAN Emulation Services User Guide

Collage 700 series LAN Emulation Services User Guide

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