Concept Guide

ToR
1 Enable BFD globally.
TOR(conf)# bfd enable
2 Congure a VLT peer LAG.
TOR(conf)#interface tengigabitethernet 1/1
TOR(conf-if-te-1/1)#no ip address
TOR(conf-if-te-1/1)#port-channel-protocol lacp
TOR(conf-if-te-1/1)#port-channel 10 mode active
TOR(conf-if-te-1/1)#no shutdown
TOR(conf)#interface tengigabitethernet 1/2
TOR(conf-if-te-1/2)#no ip address
TOR(conf-if-te-1/2)#port-channel-protocol lacp
TOR(conf-if-te-1/2)#port-channel 10 mode active
TOR(conf-if-te-1/2)#no shutdown
3 Congure the port channel for the VLT interconnect on a ToR.
TOR(conf)# interface port-channel 10
TOR(conf-if-po-111)# no ip address
TOR(conf-if-po-111)# switchport
TOR(conf-if-po-111)# no shutdown
4 Congure a VLAN.
TOR(conf)#interface vlan 100
TOR(conf-if-vl-100)#ip address 100.1.1.3/24
TOR(conf-if-vl-100)#tagged port-channel 10
TOR(conf-if-vl-100)#arp timeout 1
TOR(conf-if-vl-100)#no shutdown
TOR(conf-if-vl-100)#exit
5 Enable BFD over OSPF.
TOR(conf)# router ospf 1
TOR(conf-router_ospf)# network 100.1.1.0/24 area 0
TOR(conf-router_ospf)# bfd all-neighbors
1128
Virtual Link Trunking (VLT)