Deployment Guide

376 | Border Gateway Protocol IPv4 (BGPv4)
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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.
Neighbors are sorted according to the source and destination ip addresses. If an update-source ip
address exists, then the source ip address determines the order in which the neighbors are displayed.
Command
History
neighbor weight
c e s
Assign a weight to the neighbor connection, which is used to determine the best path.
Syntax
neighbor {ip-address | peer-group-name} weight weight
To remove a weight value, use the no neighbor {ip-address | peer-group-name} weight
command.
Parameters
Defaults
0
Command Modes
ROUTER BGP
Usage
Information
In the FTOS best path selection process, the path with the highest weight value is preferred.
If the set weight command is configured in a route map applied to this neighbor, the weight set in that
command overrides the weight set in the neighbor weight command.
Related
Commands
Command
History
network
c e s
Specify the networks for the BGP process and enter them in the BGP routing table.
Syntax
network ip-address mask [route-map map-name]
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.
weight
Enter a number as the weight.
Range: 0 to 65535
Default: 0
Note: Reset the neighbor connection (clear ip bgp ipv4 unicast soft * command) to apply the
weight to the connection and recompute the best path.
set weight Assign a weight to all paths meeting the route map criteria.
Version 7.8.1.0 Introduced support on S-Series
Version 7.7.1.0 Introduced support on C-Series