Setup Guide

Table Of Contents
Configure BFD in VLT Domain
Dell EMC Networking OS supports Bidirectional Forwarding Detection (BFD) to detect communication failures on an interface
that is a part of a VLT link aggregation group (LAG).
In VLT domain, BFD provides high availability path when there are communication failures in any one of the VLT LAG links.
The VLT nodes and top of rack (ToR) use the VLT LAG links to carry the BFD packets. When any one of the VLT LAG links
connected to the ToR is down, the BFD packets reach the VLT primary or secondary using the VLTi (ICL) link.
Sample BFD configuration in VLT domain
The following shows the sample configuration of BFD implementation in VLT environment:
ToR
1. Enable BFD globally.
TOR(conf)# bfd enable
2. Configure a VLT peer LAG.
TOR(conf)#interface tengigabitethernet 1/1/1
TOR(conf-if-te-1/1/1)#no ip address
TOR(conf-if-te-1/1/1)#port-channel-protocol lacp
TOR(conf-if-te-1/1/1)#port-channel 10 mode active
TOR(conf-if-te-1/1/1)#no shutdown
TOR(conf)#interface tengigabitethernet 1/1/2
TOR(conf-if-te-1/1/2)#no ip address
TOR(conf-if-te-1/1/2)#port-channel-protocol lacp
TOR(conf-if-te-1/1/2)#port-channel 10 mode active
TOR(conf-if-te-1/1/2)#no shutdown
3. Configure the port channel for the VLT interconnect on a ToR.
TOR(conf)# interface port-channel 10
TOR(conf-if-po-111)# no ip address
Virtual Link Trunking (VLT)
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