Reference Guide

358 | Border Gateway Protocol IPv4 (BGPv4)
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Parameters
Defaults
Not configured.
Command Modes
ROUTER BGP
Command
History
neighbor timers
c e s
Set keepalive and hold time timers for a BGP neighbor or a peer group.
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
Defaults
keepalive
= 60 seconds; holdtime = 180 seconds.
Command Modes
ROUTER BGP
Usage
Information
Timer values configured with the neighbor timers command override the timer values
configured with the any other command.
When two neighbors that are configured with different
keepalive and holdtime values
negotiate for new values, the resulting values will be as follows:
• the lower of the
holdtime values is the new holdtime value, and
subnet-number
Enter a subnet number in dotted decimal format (A.B.C.D.) as the allowable
range of addresses included in the Peer group.
To allow all addresses, enter 0.0.0.0/0.
mask
Enter a prefix mask in / prefix-length format (/x).
Version 7.8.1.0 Introduced support on S-Series
Version 7.7.1.0 Introduced support on C-Series
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.
Range: 1 to 65535
Default: 60 seconds
holdtime
Enter a number for the time interval, in seconds, between the last
keepalive message and declaring the router dead.
Range: 3 to 65535
Default: 180 seconds