Administrator Guide

6. Add an IPv6 BGP neighbor or peer group in a remote AS.
CONFIG-ROUTERBGP_ADDRESSFAMILY mode
neighbor {ipv6-address | peer-group name} remote-as as-number
7. Enable the BGP neighbor.
CONFIG-ROUTERBGP_ADDRESSFAMILY mode
neighbor { ipv6-address | peer-group-name} no shutdown
8. Specify the address family as IPv6.
CONFIG-ROUTERBGP_ADDRESSFAMILY mode
address-family ipv6 unicast vrf vrf-name
NOTE: Before performing this step, create the required VRF.
9. Activate the neighbor in IPv6 address family.
CONFIG-ROUTERBGPv6_ADDRESSFAMILY mode
neighbor ipv6-address activate
10. Configure parameters for a BFD session established with all neighbors discovered by BGP. Or establish a BFD session with a
specified 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 specified neighbor, use the first command. To remove the disabled state of a BFD for
BGP session with a specified neighbor, use the second command.
The BGP link with the neighbor returns to normal operation and uses the BFD session parameters globally configured with the
bfd all-neighbors command or configured for the peer group to which the neighbor belongs.
● Disable a BFD for BGP session with a specified neighbor.
ROUTER BGP mode
neighbor {ip-address | peer-group-name} bfd disable
● Remove the disabled state of a BFD for BGP session with a specified neighbor.
Bidirectional Forwarding Detection (BFD)
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