Service Manual

• holdtime = 180 seconds
Command Modes ROUTER BGP
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
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.
neighbor update-source
Enable the 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
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 then a number of the Loopback interface. The range is
from 0 to 16383.
Defaults Not configured.
Command Modes ROUTER BGP
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information Loopback interfaces are up constantly and the BGP session may need one interface constantly up to stabilize the
session. The neighbor update-source command is not necessary for directly connected internal BGP
sessions.
Border Gateway Protocol IPv4 (BGPv4) 315