Concept Guide

4 Congure a VLT peer LAG.
VLT_Primary(conf)#interface port-channel 10
VLT_Primary(conf-if-po-10)#no ip address
VLT_Primary(conf-if-po-10)#switchport
VLT_Primary(conf-if-po-10)#vlt-peer-lag port-channel 10
VLT_Primary(conf-if-po-10)#no shutdown
5 Congure a VLAN.
VLT_Primary(conf)#interface vlan 100
VLT_Primary(conf-if-vl-100)#ip address 100.1.1.1/24
VLT_Primary(conf-if-vl-100)#tagged port-channel 10
VLT_Primary(conf-if-vl-100)#no shutdown
VLT_Primary(conf-if-vl-100)#exit
6 Enable BFD over OSPF.
VLT_Primary(conf)# router ospf 1
VLT_Primary(conf-router_ospf)# network 100.1.1.0/24 area 0
VLT_Primary(conf-router_ospf)# bfd all-neighbors
VLT Secondary
1 Enable BFD globally.
VLT_Secondary(conf)# bfd enable
2 Congure port channel which is used as VLTi link.
3 Enable VLT and congure a VLT domain.
VLT_Secondary(conf)# vlt domain 100
VLT_Secondary(conf-vlt-domain)# peer-link port-channel 100
VLT_Secondary(conf-vlt-domain)# back-up destination 10.16.206.80
VLT_Secondary(conf-vlt-domain)# peer-routing
4 Congure a VLT peer LAG.
VLT_Primary(conf)#interface port-channel 10
VLT_Primary(conf-if-po-10)#no ip address
VLT_Primary(conf-if-po-10)#switchport
VLT_Primary(conf-if-po-10)#vlt-peer-lag port-channel 10
VLT_Primary(conf-if-po-10)#no shutdown
5 Congure a VLAN
VLT_Secondary(conf)#interface vlan 100
VLT_Secondary(conf-if-vl-100)#ip address 100.1.1.2/24
VLT_Secondary(conf-if-vl-100)#tagged port-channel 10
VLT_Secondary(conf-if-vl-100)#no shutdown
VLT_Secondary(conf-if-vl-100)#exit
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 BFD conguration in VLT domain
Verify the BFD conguration 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
Virtual Link Trunking (VLT)
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