Deployment Guide

Border Gateway Protocol IPv4 (BGPv4) | 375
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, 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
• whichever is the lower value; one-third of the new holdtime value, or the configured keepalive
value is the new keepalive value.
Command
History
neighbor update-source
c e s
Enable the E-Series software to use Loopback interfaces for TCP connections for BGP sessions.
Syntax
neighbor {ip-address | peer-group-name} update-source interface
To use the closest interface, use the no neighbor {ip-address | peer-group-name}
update-source interface command.
Parameters
Defaults
Not configured.
Command Modes
ROUTER BGP
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
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 disable all routers within the peer group.
interface Enter the keyword loopback followed by a number of the loopback interface.
Range: 0 to 16383.