Cisco NCS 5500 Series

address-family ipv4 unicast
bfd fast-detect ipv4
Enabling BFD on a BGP Neighbor
BFD can be enabled per neighbor, or per interface. This task describes how to enable BFD for BGP on a
neighbor router.
SUMMARY STEPS
1. configure
2. router bgp autonomous-system-number
3. neighbor ip-address
4. remote-as autonomous-system-number
5. bfd fast-detect
6. bfd minimum-interval milliseconds
7. bfd multiplier multiplier
8. commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Enters BGP configuration mode, allowing you to configure
the BGP routing process.
router bgp autonomous-system-number
Example:
Step 2
RP/0/RP0/CPU0:router(config)# router bgp 120
Places the router in neighbor configuration mode for BGP
routing and configures the neighbor IP address as a BGP
peer.
neighbor ip-address
Example:
RP/0/RP0/CPU0:router(config-bgp)# neighbor
172.168.40.24
Step 3
This example configures the IP address 172.168.40.24 as
a BGP peer.
Creates a neighbor and assigns it a remote autonomous
system.
remote-as autonomous-system-number
Example:
Step 4
This example configures the remote autonomous system to
be 2002.
RP/0/RP0/CPU0:router(config-bgp-nbr)# remote-as
2002
Enables BFD between the local networking devices and the
neighbor whose IP address you configured to be a BGP
peer in Step 3.
bfd fast-detect
Example:
RP/0/RP0/CPU0:router(config-bgp-nbr)# bfd
fast-detect
Step 5
In the example in Step 3, the IP address 172.168.40.24 was
set up as the BGP peer. In this example, BFD is enabled
between the local networking devices and the neighbor
172.168.40.24.
Routing Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.3.x
209
Implementing BFD
Enabling BFD on a BGP Neighbor