Reference Guide
Usage
Information
When you enable failover, 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.
neighbor graceful-restart
Enable graceful restart on a BGP neighbor.
S4820T
Syntax
neighbor {ip-address | peer-group-name} graceful-restart
[restart-time seconds] [stale-path-time seconds] [role
receiver-only]
To return to the default, enter the no bgp graceful-restart command.
Parameters
ip-address
Enter the IP address of the neighbor in dotted decimal format.
peer-group-name
Enter the name of the peer group to apply the filter to all routers in the
peer group.
restart-time
seconds
Enter the keyword restart-time then the maximum number of
seconds to restart and bring-up all the peers. The range is from 1 to
3600 seconds. The default is 120 seconds.
stale-path-time
seconds
Enter the keyword stale-path-time then the maximum number
of seconds to wait before restarting a peer’s stale paths. The default
is
360 seconds.
role receiver-only Enter the keyword role receiver-only to designate the local
router to support graceful restart as a receiver only.
Defaults as above
Command Modes ROUTER BGP
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.8.1.0 Introduced on the S-Series.
Version 7.7.1.0 Introduced on the C-Series.
Usage
Information
This feature advertises to BGP neighbors through a capability advertisement. In Receiver Only
mode, BGP saves the advertised routes of peers that support this capability when they restart.
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