This document provides instructions for configuring IP shortcuts and DHCP relay on an Avaya VSP network. It describes enabling ECMP for load balancing IP traffic across multiple equal-cost paths. Configuration steps include enabling IP routing on the default VRF, creating a VLAN, assigning an IP address, enabling IS-IS redistribution and applying the configuration. Checks include viewing IP routes and the IS-IS FIB. DHCP relay is configured by enabling it on an interface and specifying the DHCP server IP addresses.

1. Demo Lab Guide – SPB IP Shortcuts
Eli Kendel
Corporate Consulting Engineer, Enterprise Business Solutions & SDN Fx
WW Sales
ACE-Fx # 18 , CCIE-DC # 48279
Ekendel@avaya.com

2. © 2012 Avaya Inc. All rights reserved. 2
IP Shortcuts
If you only need IP routing instance
(the default VRF-0/GRT) for everything

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Ip ecmp enable
vlan create 12 name “user-12 type port-mstprstp 0
vlan members add 12 1/2
vlan i-sid 12 100012
interface vlan 12
ip address 10.10.12.1 255.255.255.0
exit
router isis
spbm 1 ip enable
redistribute direct
redistribute direct enable
exit
isis apply redistribute direct
Enabling IP Shortcuts
IP routing on VRF-0 (GRT)
 Enabling ECMP
is optional, but it
is necessary so
that IP
Shortcuts
leverage SPB’s
equal cost paths

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Checking IP Shortcuts
IP routing on VRF-0 (GRT)
show ip route
show isis spbm ip-unicast-fib
l2 ping ip-address <ip-addr-or-subnet>
l2 traceroute ip-address <ip-addr-or-subnet>

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IP Dhcp-Relay

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interface vlan 11
ip address 10.10.11.252 255.255.255.0
ip dhcp-relay
Exit
ip dhcp-relay fwd-path 10.10.11.252 192.168.100.150
ip dhcp-relay fwd-path 10.10.11.252 192.168.100.150 enable
Enabling DHCP-Relay
 Enabling DHCP-
Relay on relevant
Interface
 Enable fwd-path
point DHCP ip
address