Network management involves monitoring, controlling, and coordinating the various hardware and software components in a network. The key components of the Internet standard network management framework are the Structure of Management Information (SMI) which defines management data, the Management Information Base (MIB) which stores this data, and the Simple Network Management Protocol (SNMP) which is used to communicate management information between network devices and managing entities. ASN.1 provides a standard way to encode management data for transmission.
This paper is written to give basic knowledge of Network function virtualisation in network system. In this paper the work on NFV done till now has been collaborated. It describes how the challenges faced by industry lead to NFV and what is meaning of NFV and NFV architecture model. It also explains NFV Infrastructure is managed and the forwarding path on which packets traverse in NFV. A relationship of NFV with SDN and current research ongoing on NFV policies is discussed.
Distributed computing deals with hardware and software systems containing more than one processing element or storage element, concurrent processes, or multiple programs, running under a loosely or tightly controlled regime. In distributed computing a program is split up into parts that run simultaneously on multiple computers communicating over a network. Distributed computing is a form of parallel computing, but parallel computing is most commonly used to describe program parts running simultaneously on multiple processors in the same computer. Both types of processing require dividing a program into parts that can run simultaneously, but distributed programs often must deal with heterogeneous environments, network links of varying latencies, and unpredictable failures in the network or the computers.
This paper is written to give basic knowledge of Network function virtualisation in network system. In this paper the work on NFV done till now has been collaborated. It describes how the challenges faced by industry lead to NFV and what is meaning of NFV and NFV architecture model. It also explains NFV Infrastructure is managed and the forwarding path on which packets traverse in NFV. A relationship of NFV with SDN and current research ongoing on NFV policies is discussed.
Distributed computing deals with hardware and software systems containing more than one processing element or storage element, concurrent processes, or multiple programs, running under a loosely or tightly controlled regime. In distributed computing a program is split up into parts that run simultaneously on multiple computers communicating over a network. Distributed computing is a form of parallel computing, but parallel computing is most commonly used to describe program parts running simultaneously on multiple processors in the same computer. Both types of processing require dividing a program into parts that can run simultaneously, but distributed programs often must deal with heterogeneous environments, network links of varying latencies, and unpredictable failures in the network or the computers.
A short power point about social conditioning. What is social conditioning, what is the dark side about it and how to get rid of it. Full blog here http://acongruentman.com/warning-social-conditioning-dark-side/
Chapter 9Network ManagementComputer Networking A Top Down A.docxtiffanyd4
Chapter 9
Network Management
Computer Networking: A Top Down Approach
6th edition
Jim Kurose, Keith Ross
Addison-Wesley
March 2012
A note on the use of these ppt slides:
We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you see the animations; and can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following:
If you use these slides (e.g., in a class) that you mention their source (after all, we’d like people to use our book!)
If you post any slides on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material.
Thanks and enjoy! JFK/KWR
All material copyright 1996-2012
J.F Kurose and K.W. Ross, All Rights Reserved
Network Management
9-1
Network Management
9-2
Chapter 9: Network Management
Chapter goals:
introduction to network management
motivation
major components
Internet network management framework
MIB: management information base
SMI: Structure of Management Information, data definition language
SNMP: protocol for network management
security and administration
2
Network Management
9-3
Chapter 9 outline
What is network management?
Internet-standard management framework
Structure of Management Information: SMI
Management Information Base: MIB
SNMP Protocol Operations and Transport Mappings
Security and Administration
3
Network Management
9-4
What is network management?
autonomous systems (aka “network”): 1000s of interacting hardware/software components
other complex systems requiring monitoring, control:
jet airplane
nuclear power plant
others?
"Network management includes the deployment, integration
and coordination of the hardware, software, and human
elements to monitor, test, poll, configure, analyze, evaluate,
and control the network and element resources to meet the
real-time, operational performance, and Quality of Service
requirements at a reasonable cost."
4
Network Management
9-5
Infrastructure for network management
managed device
managed device
managed device
managed device
definitions:
managed devices contain
managed objects whose
data is gathered into a
Management Information
Base (MIB)
managing
entity
data
managing entity
agent
data
agent
data
agent
data
agent
data
network
management
protocol
managed device
agent
data
5
Network Management
9-6
Network management standards
OSI CMIP
Common Management Information Protocol
designed 1980’s: the unifying net management standard
too slowly standardized
SNMP: Simple Network Management Protocol
Internet roots (SGMP)
deployed, adopted rapidly
growth: size, complexity
currently: SNMP V3
de facto network management standard
6
Network Management
9-7
What is network management?
Internet-.
A short power point about social conditioning. What is social conditioning, what is the dark side about it and how to get rid of it. Full blog here http://acongruentman.com/warning-social-conditioning-dark-side/
Chapter 9Network ManagementComputer Networking A Top Down A.docxtiffanyd4
Chapter 9
Network Management
Computer Networking: A Top Down Approach
6th edition
Jim Kurose, Keith Ross
Addison-Wesley
March 2012
A note on the use of these ppt slides:
We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you see the animations; and can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following:
If you use these slides (e.g., in a class) that you mention their source (after all, we’d like people to use our book!)
If you post any slides on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material.
Thanks and enjoy! JFK/KWR
All material copyright 1996-2012
J.F Kurose and K.W. Ross, All Rights Reserved
Network Management
9-1
Network Management
9-2
Chapter 9: Network Management
Chapter goals:
introduction to network management
motivation
major components
Internet network management framework
MIB: management information base
SMI: Structure of Management Information, data definition language
SNMP: protocol for network management
security and administration
2
Network Management
9-3
Chapter 9 outline
What is network management?
Internet-standard management framework
Structure of Management Information: SMI
Management Information Base: MIB
SNMP Protocol Operations and Transport Mappings
Security and Administration
3
Network Management
9-4
What is network management?
autonomous systems (aka “network”): 1000s of interacting hardware/software components
other complex systems requiring monitoring, control:
jet airplane
nuclear power plant
others?
"Network management includes the deployment, integration
and coordination of the hardware, software, and human
elements to monitor, test, poll, configure, analyze, evaluate,
and control the network and element resources to meet the
real-time, operational performance, and Quality of Service
requirements at a reasonable cost."
4
Network Management
9-5
Infrastructure for network management
managed device
managed device
managed device
managed device
definitions:
managed devices contain
managed objects whose
data is gathered into a
Management Information
Base (MIB)
managing
entity
data
managing entity
agent
data
agent
data
agent
data
agent
data
network
management
protocol
managed device
agent
data
5
Network Management
9-6
Network management standards
OSI CMIP
Common Management Information Protocol
designed 1980’s: the unifying net management standard
too slowly standardized
SNMP: Simple Network Management Protocol
Internet roots (SGMP)
deployed, adopted rapidly
growth: size, complexity
currently: SNMP V3
de facto network management standard
6
Network Management
9-7
What is network management?
Internet-.
Chapter 9Network ManagementComputer Networking A Top Down A.docxmccormicknadine86
Chapter 9
Network Management
Computer Networking: A Top Down Approach
6th edition
Jim Kurose, Keith Ross
Addison-Wesley
March 2012
A note on the use of these ppt slides:
We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you see the animations; and can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following:
If you use these slides (e.g., in a class) that you mention their source (after all, we’d like people to use our book!)
If you post any slides on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material.
Thanks and enjoy! JFK/KWR
All material copyright 1996-2012
J.F Kurose and K.W. Ross, All Rights Reserved
Network Management
9-1
Network Management
9-2
Chapter 9: Network Management
Chapter goals:
introduction to network management
motivation
major components
Internet network management framework
MIB: management information base
SMI: Structure of Management Information, data definition language
SNMP: protocol for network management
security and administration
2
Network Management
9-3
Chapter 9 outline
What is network management?
Internet-standard management framework
Structure of Management Information: SMI
Management Information Base: MIB
SNMP Protocol Operations and Transport Mappings
Security and Administration
3
Network Management
9-4
What is network management?
autonomous systems (aka “network”): 1000s of interacting hardware/software components
other complex systems requiring monitoring, control:
jet airplane
nuclear power plant
others?
"Network management includes the deployment, integration
and coordination of the hardware, software, and human
elements to monitor, test, poll, configure, analyze, evaluate,
and control the network and element resources to meet the
real-time, operational performance, and Quality of Service
requirements at a reasonable cost."
4
Network Management
9-5
Infrastructure for network management
managed device
managed device
managed device
managed device
definitions:
managed devices contain
managed objects whose
data is gathered into a
Management Information
Base (MIB)
managing
entity
data
managing entity
agent
data
agent
data
agent
data
agent
data
network
management
protocol
managed device
agent
data
5
Network Management
9-6
Network management standards
OSI CMIP
Common Management Information Protocol
designed 1980’s: the unifying net management standard
too slowly standardized
SNMP: Simple Network Management Protocol
Internet roots (SGMP)
deployed, adopted rapidly
growth: size, complexity
currently: SNMP V3
de facto network management standard
6
Network Management
9-7
What is network management?
Internet- ...
The following resources come from the 2009/10 BSc in Computer and Network Technologies (course number 2ELE0072) from the University of Hertfordshire. All the mini projects are designed as level two modules of the undergraduate programmes.
The objectives of this project are to demonstrate by building a virtual local area network environment:
• Installation and configuration of virtual network/server operating systems (virtual)
• Installation and configuration of virtual workstations (operating systems)
• Ensure a suitable level of security and access control exists for the virtual network.
• Ensure that the network can be easily managed.
This project entails using a virtual network to demonstrate a typical setup for a networked office environment. Students are expected to be able to perform simple installation of workstation and server operating systems. Students are required to investigate important management tools on a server operating system and to configure these tools to simplify management of the network. The network environment should have a suitable level of security and access control.
DDS Advanced Tutorial - OMG June 2013 Berlin MeetingJaime Martin Losa
An extended, in-depth tutorial explaining how to fully exploit the standard's unique communication capabilities.Presented at the OMG June 2013 Berlin Meeting.
Users upgrading to DDS from a homegrown solution or a legacy-messaging infrastructure often limit themselves to using its most basic publish-subscribe features. This allows applications to take advantage of reliable multicast and other performance and scalability features of the DDS wire protocol, as well as the enhanced robustness of the DDS peer-to-peer architecture. However, applications that do not use DDS's data-centricity do not take advantage of many of its QoS-related, scalability and availability features, such as the KeepLast History Cache, Instance Ownership and Deadline Monitoring. As a consequence some developers duplicate these features in custom application code, resulting in increased costs, lower performance, and compromised portability and interoperability.
This tutorial will formally define the data-centric publish-subscribe model as specified in the OMG DDS specification and define a set of best-practice guidelines and patterns for the design and implementation of systems based on DDS.
COMP1609(2022-23)Network and Internet Technologyand DesignFaculty Head.docxnoel23456789
COMP1609(2022/23)
Network and Internet Technology
and Design
Faculty Header ID:
11562
Contribution:100% of thecourse
Course Leader:
Jason Parke
NetSim Coursework
Deadline Date:
Monday 04/12/2022
This coursework should take an average student who is up to date with tutorial workapproximately 50 hours Feedback and grades are normally made available within 15 working days of the coursework deadline
Learning Outcomes:
A. Demonstrate knowledge of network communication, OSI and TCP/IP model.B. Demonstrate a critical understanding of the top network model with related key protocols, services, and applications.C. Evaluate common network problems (malfunction, poor performance), and adopt a systematic approach to troubleshooting and resolving the problem.D. Be competent in the use of tools designed to analyse and simulate network functionality.
Plagiarism is presenting somebody else's work as your own. It includes copying information
directly from the Web or books without referencing the material; submitting joint coursework
as an individual effort; copying another student's coursework; stealing coursework from
another student and submitting it as your work. Suspected plagiarism will be investigated and,
if
found
to
have
occurred,
will
be
dealt
withaccording
to
the
university's
procedures.
Please
see
yourstudent
handbook for
further details
of
what
is/isn't plagiarism.
All material copied or amended from any source (e.g., internet, books) must be referenced correctly accordingto the reference style you are using.
Your work will be submitted for plagiarism checking. Anyattempt to bypass our plagiarism detection systems will be treated as a severe Assessment Offence.
The
coursework
detailed
specification:
This
is
an
individual
assessment.
Your
investigation
shouldnot
be
shared
among
other
students.
The objective of the coursework is to simulate a client-server model communication over an IP network and to investigatean application and network performance in multiple providedscenarios.
This
assessment
requires
to use
NetSim
simulator.
The network architecture overview:
The company’s headquarters are in Greenwich (UK). They have recently opened regional offices in New York (USA), and Dubai (Dubai). The main service provided by the New York and Dubai offices will be gathered and distributed monthly and annual reports describing sales managed by theheadquarters in Greenwich, UK. The company has decided to perform a simulation in case they will expand with anadditional call centre.
Greenwich HQ LAN:
The network is undefined and needs to be designed by the student with justifications,this implies justification of several nodes, users, andapplications.
New York office LAN:
It consists of 35 users connected to a core switch, Local printer, and email. They are connected to the Internet via a backbone link. Some applications .
A distributed system in its most simplest definition is a group of computers working together as to
appear as a single computer to the end-user. These machines have a shared state, operate
concurrently and can fail independently without affecting the whole system’s uptime.
This is in line with ever-growing technological expansion of the world, distributed systems are
becoming more and more widespread. Take a look at the increasing number of available
computer technologies/innovation around, this is sporadically increasing, and this result in
intense computational requirement.
Yeah, Moore’s law proposed more computing power by fitting more transistors (which
approximately doubles every two years) into a simple chip using cost-efficient approach - cool,
but over the past 5 years, there has been little deviation from this - ability to scale horizontally
and not just vertically alone.
The realization of network softwarization, an overarching buzzword to encompass all software-centric developments from the Software-Defined Networking (SDN) and Network Function Virtualization (NFV) trends, is being enabled through a set of innovations in high-speed data plane design and implementation. Recent efforts include te-architecting the hardware-software interfaces and exposing programmatic interfaces (e.g., OpenFlow), programmable hardware-based pipelines (e.g. Protocol Independent Switch Architecture – PISA) along suitabe programming languages (e.g., P4), and multiple advances on low overhead virtualization and fast packet processing libraries (e.g. DPDK, FD.io) for Linux based general purpose processor platforms. This talk provides an overview of relevant ongoing work and discusses the trade-offs of each design and implementation choice of software-defined dataplanes regarding Programmability, Performance, and Portability.
IEEE HPSR 2017 Keynote: Softwarized Dataplanes and the P^3 trade-offs: Progra...
Chapter9 network managment-3ed
1. 1
Network Management 9-1
Chapter 9
Network Management
Computer Networking:
A Top Down Approach
Featuring the Internet,
3rd edition.
Jim Kurose, Keith Ross
Addison-Wesley, July
2004.
A note on the use of these ppt slides:
We’re making these slides freely available to all (faculty, students, readers).
They’re in PowerPoint form so you can add, modify, and delete slides
(including this one) and slide content to suit your needs. They obviously
represent a lot of work on our part. In return for use, we only ask the
following:
If you use these slides (e.g., in a class) in substantially unaltered form,
that you mention their source (after all, we’d like people to use our book!)
If you post any slides in substantially unaltered form on a www site, that
you note that they are adapted from (or perhaps identical to) our slides, and
note our copyright of this material.
Thanks and enjoy! JFK/KWR
All material copyright 1996-2004
J.F Kurose and K.W. Ross, All Rights Reserved
Network Management 9-2
Chapter 9: Network Management
Chapter goals:
introduction to network management
motivation
major components
Internet network management framework
MIB: management information base
SMI: data definition language
SNMP: protocol for network management
security and administration
presentation services: ASN.1
2. 2
Network Management 9-3
Chapter 9 outline
What is network management?
Internet-standard management framework
Structure of Management Information: SMI
Management Information Base: MIB
SNMP Protocol Operations and Transport Mappings
Security and Administration
ASN.1
Network Management 9-4
What is network management?
autonomous systems (aka “network”): 100s or 1000s
of interacting hardware/software components
other complex systems requiring monitoring, control:
jet airplane
nuclear power plant
others?
"Network management includes the deployment, integration
and coordination of the hardware, software, and human
elements to monitor, test, poll, configure, analyze, evaluate,
and control the network and element resources to meet the
real-time, operational performance, and Quality of Service
requirements at a reasonable cost."
This image cannot currently be displayed.
3. 3
Network Management 9-5
Infrastructure for network management
agent data
agent data
agent data
agent data
managed device
managed device
managed device
managed device
managing
entity
data
network
management
protocol
definitions:
managed devices contain
managed objects whose
data is gathered into a
Management Information
Base (MIB)
managing entity
Network Management 9-6
Network Management standards
OSI CMIP
Common Management
Information Protocol
designed 1980’s: the
unifying net
management standard
too slowly
standardized
SNMP: Simple Network
Management Protocol
Internet roots (SGMP)
started simple
deployed, adopted rapidly
growth: size, complexity
currently: SNMP V3
de facto network
management standard
4. 4
Network Management 9-7
Chapter 9 outline
What is network management?
Internet-standard management framework
Structure of Management Information: SMI
Management Information Base: MIB
SNMP Protocol Operations and Transport Mappings
Security and Administration
ASN.1
Network Management 9-8
SNMP overview: 4 key parts
Management information base (MIB):
distributed information store of network
management data
Structure of Management Information (SMI):
data definition language for MIB objects
SNMP protocol
convey manager<->managed object info, commands
security, administration capabilities
major addition in SNMPv3
5. 5
Network Management 9-9
SMI: data definition language
Purpose: syntax, semantics of
management data well-
defined, unambiguous
base data types:
straightforward, boring
OBJECT-TYPE
data type, status,
semantics of managed
object
MODULE-IDENTITY
groups related objects
into MIB module
Basic Data Types
INTEGER
Integer32
Unsigned32
OCTET STRING
OBJECT IDENTIFIED
IPaddress
Counter32
Counter64
Guage32
Time Ticks
Opaque
Network Management 9-10
SNMP MIB
OBJECT TYPE:
OBJECT TYPE:OBJECT TYPE:
objects specified via SMI
OBJECT-TYPE construct
MIB module specified via SMI
MODULE-IDENTITY
(100 standardized MIBs, more vendor-specific)
MODULE
6. 6
Network Management 9-11
SMI: Object, module examples
OBJECT-TYPE: ipInDelivers MODULE-IDENTITY: ipMIB
ipInDelivers OBJECT TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
“The total number of input
datagrams successfully
delivered to IP user-
protocols (including ICMP)”
::= { ip 9}
ipMIB MODULE-IDENTITY
LAST-UPDATED “941101000Z”
ORGANZATION “IETF SNPv2
Working Group”
CONTACT-INFO
“ Keith McCloghrie
……”
DESCRIPTION
“The MIB module for managing IP
and ICMP implementations, but
excluding their management of
IP routes.”
REVISION “019331000Z”
………
::= {mib-2 48}
Network Management 9-12
MIB example: UDP module
Object ID Name Type Comments
1.3.6.1.2.1.7.1 UDPInDatagrams Counter32 total # datagrams delivered
at this node
1.3.6.1.2.1.7.2 UDPNoPorts Counter32 # underliverable datagrams
no app at portl
1.3.6.1.2.1.7.3 UDInErrors Counter32 # undeliverable datagrams
all other reasons
1.3.6.1.2.1.7.4 UDPOutDatagrams Counter32 # datagrams sent
1.3.6.1.2.1.7.5 udpTable SEQUENCE one entry for each port
in use by app, gives port #
and IP address
7. 7
Network Management 9-13
SNMP Naming
question: how to name every possible standard object
(protocol, data, more..) in every possible network
standard??
answer: ISO Object Identifier tree:
hierarchical naming of all objects
each branchpoint has name, number
1.3.6.1.2.1.7.1
ISO
ISO-ident. Org.
US DoD
Internet
udpInDatagrams
UDP
MIB2
management
Network Management 9-14
Check out www.alvestrand.no/harald/objectid/top.html
OSI
Object
Identifier
Tree
8. 8
Network Management 9-15
SNMP protocol
Two ways to convey MIB info, commands:
agent data
Managed device
managing
entity
response
agent data
Managed device
managing
entity
trap msg
request
request/response mode trap mode
Network Management 9-16
SNMP protocol: message types
GetRequest
GetNextRequest
GetBulkRequest
Mgr-to-agent: “get me data”
(instance,next in list, block)
Message type Function
InformRequest Mgr-to-Mgr: here’s MIB value
SetRequest Mgr-to-agent: set MIB value
Response Agent-to-mgr: value, response to
Request
Trap Agent-to-mgr: inform manager
of exceptional event
9. 9
Network Management 9-17
SNMP protocol: message formats
Network Management 9-18
SNMP security and administration
encryption: DES-encrypt SNMP message
authentication: compute, send MIC(m,k):
compute hash (MIC) over message (m),
secret shared key (k)
protection against playback: use nonce
view-based access control
SNMP entity maintains database of access
rights, policies for various users
database itself accessible as managed object!
10. 10
Network Management 9-19
Chapter 9 outline
What is network management?
Internet-standard management framework
Structure of Management Information: SMI
Management Information Base: MIB
SNMP Protocol Operations and Transport Mappings
Security and Administration
The presentation problem: ASN.1
Network Management 9-20
The presentation problem
Q: does perfect memory-to-memory copy
solve “the communication problem”?
A: not always!
problem: different data format, storage conventions
struct {
char code;
int x;
} test;
test.x = 256;
test.code=‘a’
a
00000001
00000011
a
00000011
00000001
test.code
test.x
test.code
test.x
host 1 format host 2 format
11. 11
Network Management 9-21
A real-life presentation problem:
aging 60’s
hippie
2004 teenagergrandma
Network Management 9-22
Presentation problem: potential solutions
1. Sender learns receiver’s format. Sender translates
into receiver’s format. Sender sends.
– real-world analogy?
– pros and cons?
2. Sender sends. Receiver learns sender’s format.
Receiver translate into receiver-local format
– real-world-analogy
– pros and cons?
3. Sender translates host-independent format. Sends.
Receiver translates to receiver-local format.
– real-world analogy?
– pros and cons?
12. 12
Network Management 9-23
Solving the presentation problem
1. Translate local-host format to host-independent format
2. Transmit data in host-independent format
3. Translate host-independent format to remote-host
format
aging 60’s
hippie 2004 teenagergrandma
Network Management 9-24
ASN.1: Abstract Syntax Notation 1
ISO standard X.680
used extensively in Internet
like eating vegetables, knowing this “good for you”!
defined data types, object constructors
like SMI
BER: Basic Encoding Rules
specify how ASN.1-defined data objects to be
transmitted
each transmitted object has Type, Length, Value
(TLV) encoding
13. 13
Network Management 9-25
TLV Encoding
Idea: transmitted data is self-identifying
T: data type, one of ASN.1-defined types
L: length of data in bytes
V: value of data, encoded according to ASN.1
standard
1
2
3
4
5
6
9
Boolean
Integer
Bitstring
Octet string
Null
Object Identifier
Real
Tag Value Type
Network Management 9-26
TLV
encoding:
example
Value, 5 octets (chars)
Length, 5 bytes
Type=4, octet string
Value, 259
Length, 2 bytes
Type=2, integer
14. 14
Network Management 9-27
Network Management: summary
network management
extremely important: 80% of network “cost”
ASN.1 for data description
SNMP protocol as a tool for conveying
information
Network management: more art than science
what to measure/monitor
how to respond to failures?
alarm correlation/filtering?