Administrator Guide
Configure BFD for BGP
In a BGP core network, bidirectional forwarding detection (BFD) provides rapid detection of communication
failures in BGP fast-forwarding paths between internal BGP (iBGP) and external BGP (eBGP) peers for faster
network reconvergence.
BFD for BGP is supported on 1GE, 10GE, 40GE, port-channel, and VLAN interfaces. BFD for BGP does not
support IPv6 and the BGP multihop feature.
Prerequisites
Before configuring BFD for BGP, you must first configure the following settings:
1 Configure BGP on the routers that you want to interconnect, as described in
Border Gateway Protocol IPv4 (BGPv4).
2 Enable fast fall-over for BGP neighbors to reduce convergence time (the neighbor fall-over
command), as described in Configuring BGP Fast Fail-Over.
Establishing Sessions with BGP Neighbors
Before configuring BFD for BGP, you must first configure BGP on the routers that you want to interconnect.
For more information, refer to Border Gateway Protocol IPv4 (BGPv4).
Bidirectional Forwarding Detection (BFD) 179