Reference Guide

neighbor timers
Set keepalive and hold time timers for a BGP neighbor or a peer group.
S4820T
Syntax
neighbor {ip-address | peer-group-name} timers keepalive
holdtime
To return to the default values, use the no neighbor {ip-address | peer-group-
name} timers command.
Parameters
ip-address Enter the IP address of the peer router in dotted decimal format.
peer-group-name Enter the name of the peer group to set the timers for all routers
within the peer group.
keepalive Enter a number for the time interval, in seconds, between keepalive
messages sent to the neighbor routers. The range is from 1 to 65535.
The default is 60 seconds.
holdtime Enter a number for the time interval, in seconds, between the last
keepalive message and declaring the router dead. The range is from 3
to 65535. The default is 180 seconds.
Defaults
• keepalive = 60 seconds
• holdtime = 180 seconds
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
Timer values configured with the neighbor timers command override the timer values
configured with any other command.
When two neighbors, configured with different keepalive and holdtime values,
negotiate for new values, the resulting values are as follows:
• the lower of the holdtime value is the new holdtime value, and
• whichever is the lower value; one-third of the new holdtime value, or the
configured
keepalive value, is the new keepalive value.
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