Reference Guide

• show ip bgp neighbors – displays the current BGP neighbors.
neighbor timers
Set keepalive and hold time timers for a BGP neighbor or a peer group.
C9000 Series
Syntax
neighbor {ipv6-address | peer-group-name} timers keepalive
holdtime
To return to the default values, use the no neighbor {ipv6-address | peer-
group-name} timers command.
Parameters
ipv6-address Enter the IPv6 address in the x:x:x:x::x format.
NOTE: The :: notation specifies successive hexadecimal
fields of zeros.
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 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 3 to 65535. The default is 180 seconds.
Defaults
• keepalive = 60 seconds
• holdtime = 180 seconds
Command Modes ROUTER BGP
Command History
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.2.1.0 Introduced on the E-Series ExaScale.
7.4.1.0 Introduced
Usage Information
Timer values configured with the neighbor timers command override the timer
values configured with the timers bgp 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 values is the new holdtime value, and
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Border Gateway Protocol