Reference Guide

Version Description
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
Usage
Information
To prevent loops, the neighbor ebgp-multihop command does not install the
default routes of the multihop peer. Networks not directly connected are not
considered valid for best-path selection.
neighbor fail-over
Enable or disable fast fail-over for BGP neighbors.
S5000
Syntax
neighbor {ipv4-address | peer-group-name} fall-over
To disable, use the no neighbor {ipv4-address | peer-group-name}
fall-over command.
Parameters
ipv4-address Enter the IP address of the neighbor in dotted decimal
format.
peer-group-
name
Enter the name of the peer group.
Defaults Disabled.
Command
Modes
ROUTER BGP
Command
History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
When you enable fail-over, BGP keeps track of IP or IPv6 ability to reach the peer
remote address and the peer local address. Whenever either address becomes
unreachable (for example, no active route exists in the routing table for the peer IP
or IPv6 destination/local address), BGP brings down the session with the peer.
Related
Commands
show ip bgp neighbors – displays information on the BGP neighbors.
458
Border Gateway Protocol