Concept Guide

9 Activate the neighbor in IPv6 address family.
CONFIG-ROUTERBGPv6_ADDRESSFAMILY mode
neighbor ipv6-address activate
10 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)#address-family ipv4 vrf vrf1
DellEMC(conf-router_bgp_af)#neighbor 10.1.1.2 remote-as 2
DellEMC(conf-router_bgp_af)#neighbor 10.1.1.2 no shutdown
DellEMC(conf-router_bgp_af)#neighbor 20::2 remote-as 2
DellEMC(conf-router_bgp_af)#neighbor 20::2 no shutdown
DellEMC(conf-router_bgp_af)#address-family ipv6 unicast vrf vrf1
DellEMC(conf-router_bgpv6_af)#neighbor 20::2 activate
DellEMC(conf-router_bgpv6_af)#address-family ipv4 vrf vrf1
DellEMC(conf-router_bgp_af)#bfd all-neighbors
DellEMC(conf-router_bgp_af)#exit
DellEMC(conf-router_bgp)#show config
!
router bgp 1
!
address-family ipv4 vrf vrf1
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
exit-address-family
!
address-family ipv6 unicast vrf vrf1
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
Displaying BFD for BGP Information
You can display related information for BFD for BGP.
To display information about BFD for BGP sessions on a router, use the following commands and refer to the following examples.
176
Bidirectional Forwarding Detection (BFD)