Users Guide

Table Of Contents
Configure VLT port channel peer 1
OS10(config)# interface port-channel 20
OS10(conf-if-po-20)# vlt-port-channel 20
Configure VLT port channel peer 2
OS10(config)# interface port-channel 20
OS10(conf-if-po-20)# vlt-port-channel 20
Configure VLT peer routing
VLT peer routing enables optimized routing where packets destined for the L3 endpoint of the VLT peer are locally routed. VLT
supports unicast routing of both IPv4 and IPv6 traffic.
To enable VLT unicast routing, both VLT peers must be in L3 mode. The VLAN configuration must be symmetrical on both
peers. You cannot configure the same VLAN as L2 on one node and as L3 on the other node.
1. Enter the VLT domain ID in CONFIGURATION mode, from 1 to 255.
vlt-domain domain-id
2. Enable peer-routing in VLT-DOMAIN mode.
peer-routing
3. Repeat the steps on the VLT peer.
Configure unicast routing peer 1
OS10(config)# vlt-domain 1
OS10(conf-vlt-1)# peer-routing
Configure unicast routing peer 2
OS10(config)# vlt-domain 1
OS10(conf-vlt-1)# peer-routing
Configure VRRP Active-Active mode
To enable optimized L3 forwarding over VLT, use VRRP Active-Active mode. By default, VRRP Active-Active mode is enabled
on the VLAN interfaces. In this mode, each peer locally forwards L3 traffic, eliminating traffic flow across the VLTi link.
Configure the same static and dynamic L3 routing on each peer to ensure that L3 reachability and routing tables are the same
on both peers.
1. Enable VRRP Active-Active mode in VLAN-INTERFACE mode.
vrrp mode active-active
2. Configure VRRP on the L3 VLAN that spans both peers.
3. Repeat the steps on the VLT peer.
Configure VRRP active-active mode peer 1
OS10(conf-if-vl-10)# vrrp mode active-active
NOTE: VRRP active-active is the default mode.
Configure VRRP active-active mode peer 2
OS10(conf-if-vl-10)# vrrp mode active-active
Virtual Link Trunking
1279