API Guide

Table Of Contents
6. Enable BFD over OSPF.
VLT_Secondary(conf)# router ospf 1
VLT_Secondary(conf-router_ospf)# network 100.1.1.0/24 area 0
VLT_Secondary(conf-router_ospf)# bfd all-neighbors
Verify the BFD configuration in each node using the following show commands:
To verify the BFD neighbors in the ToR, use show bfd neighbors command.
TOR#show bfd neighbors
LocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients
* 100.1.1.3 100.1.1.1 Vl 100 Up 200 200 3 O
* 100.1.1.3 100.1.1.2 Vl 100 Up 200 200 3 O
To verify the VLTi (ICL) link is up in the VLT primary peer, use show vlt brief command.
VLT_Primary#show vlt brief
VLT Domain Brief
------------------
Domain ID: 100
Role: Primary
Role Priority: 32768
ICL Link Status: Up
HeartBeat Status: Up
VLT Peer Status: Up
Version: 6(9)
Local System MAC address: f4:8e:38:6a:97:3f
Remote System MAC address: 00:e6:e2:f5:5c:15
Remote system version: 6(9)
Delay-Restore timer: 90 seconds
Delay-Restore Abort Threshold: 60 seconds
Peer-Routing : Enabled
Peer-Routing-Timeout timer: 0 seconds
Multicast peer-routing timeout: 150 seconds
To verify the VLTi (ICL) link is up in the VLT secondary peer, use show vlt brief command.
VLT_Secondary#show vlt brief
VLT Domain Brief
------------------
Domain ID: 100
Role: Secondary
Role Priority: 32768
ICL Link Status: Up
HeartBeat Status: Up
VLT Peer Status: Up
Version: 6(9)
Local System MAC address: 00:e6:e2:f5:5c:15
Remote System MAC address: f4:8e:38:6a:97:3f
Remote system version: 6(9)
Delay-Restore timer: 90 seconds
Delay-Restore Abort Threshold: 60 seconds
Peer-Routing : Enabled
Peer-Routing-Timeout timer: 0 seconds
Multicast peer-routing timeout: 150 seconds
IPv6 Peer Routing in VLT Domains Overview
VLT enables the physical links between two devices that are called VLT nodes or peers, and within a VLT domain, to be
considered as a single logical link to external devices that are connected using LAG bundles to both the VLT peers. This
capability enables redundancy without the implementation of Spanning tree protocol (STP), thereby providing a loop-free
network with optimal bandwidth utilization.
IPv6 peer routing is supported on all the platforms that are compatible with IPv6 routing and support VLT. This functionality
performs the following operations:
Virtual Link Trunking (VLT)
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