Setup Guide

9 Congure parameters for a BFD session established with all neighbors discovered by BGP. Or establish a BFD session with a specied
BGP neighbor or peer group using the default BFD session parameters.
CONFIG-ROUTERBGP mode
bfd all-neighbors
DellEMC(conf)#router bgp 1
DellEMC(conf-router_bgp)#neighbor 10.1.1.2 remote-as 2
DellEMC(conf-router_bgp)#neighbor 10.1.1.2 no shutdown
DellEMC(conf-router_bgp)#neighbor 20::2 remote-as 2
DellEMC(conf-router_bgp)#neighbor 20::2 no shutdown
DellEMC(conf-router_bgp)#address-family ipv6 unicast
DellEMC(conf-router_bgpv6_af)#neighbor 20::2 activate
DellEMC(conf-router_bgpv6_af)#exit
DellEMC(conf-router_bgp)#bfd all-neighbors
DellEMC(conf-router_bgp)#show config
!
router bgp 1
neighbor 10.1.1.2 remote-as 2
neighbor 10.1.1.2 no shutdown
neighbor 20::2 remote-as 2
neighbor 20::2 no shutdown
bfd all-neighbors
!
address-family ipv6 unicast
neighbor 20::2 activate
exit-address-family
DellEMC(conf-router_bgp)#
Disabling BFD for BGP
You can disable BFD for BGP.
To disable a BFD for BGP session with a specied neighbor, use the rst command. To remove the disabled state of a BFD for BGP session
with a specied neighbor, use the second command.
The BGP link with the neighbor returns to normal operation and uses the BFD session parameters globally congured with the bfd all-
neighbors command or congured for the peer group to which the neighbor belongs.
• Disable a BFD for BGP session with a specied neighbor.
ROUTER BGP mode
neighbor {ip-address | ipv6–address |peer-group-name} bfd disable
• Remove the disabled state of a BFD for BGP session with a specied neighbor.
ROUTER BGP mode
no neighbor {ip-address | ipv6–address | peer-group-name} bfd disable
Use BFD in a BGP Peer Group
You can establish a BFD session for the members of a peer group (the neighbor peer-group-name bfd command in ROUTER BGP
conguration mode).
Members of the peer group may have BFD:
• Explicitly enabled (the neighbor ip-address bfd command)
• Explicitly disabled (the neighbor ip-address bfd disable command)
• Inherited (neither explicitly enabled or disabled) according to the current BFD conguration of the peer group. For information about
BGP peer groups, refer to Congure peer groups.
If you explicitly enable (or disable) a BGP neighbor for BFD that belongs to a peer group:
Bidirectional Forwarding Detection (BFD)
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