Configuring Bfd For Bgp - Dell Force10 Z9000 Configuration Manual

Disabling BFD for IS-IS
If BFD is disabled globally, all sessions are torn down, and sessions on the remote system are placed in a
Down state. If BFD is disabled on an interface, sessions on the interface are torn down, and sessions on the
remote system are placed in a Down state
Disabling BFD does not trigger a change in BFD clients; a final Admin Down packet is sent before the
session is terminated.
To disable BFD sessions with all IS-IS neighbors:
Step Task
1 Disable BFD sessions with all IS-IS
neighbors.
To disable BFD sessions with all IS-IS neighbors out of an interface:
Step Task
1 Disable BFD sessions with all IS-IS
neighbors out of an interface

Configuring BFD for BGP

BFD for BGP is only supported on platforms:
In a BGP core network, 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
Gateway
2. Enable fast fall-over for BGP neighbors to reduce convergence time (
described. in
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, see
| Bidirectional Forwarding Detection (BFD)
142
Protocol.
BGP fast fall-over.
(Remote System State Change due to Local State Admin
Command Syntax
no bfd all-neighbors
Command Syntax
isis bfd all-neighbors disable
cez
Chapter 8, Border Gateway
Command Mode
ROUTER-ISIS
Command Mode
INTERFACE
Chapter 8, Border
command) as
neighbor fall-over
Protocol.
Down).