Service Manual

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
Configure the same password on both BGP peers or a connection does not occur. When you configure MD5
authentication between two BGP peers, each segment of the TCP connection between them is verified and the
MD5 digest is checked on every segment sent on the TCP connection.
Configuring a password for a neighbor causes an existing session to be torn down and a new one established.
If you specify a BGP peer group by using the peer-group-name parameter, all the members of the peer group
inherit the characteristic configured with this command.
If you configure a password on one neighbor, but you have not configured a password for the neighboring router,
the following message appears on the console while the routers attempt to establish a BGP session between
them:
%RPM0-P:RP1 %KERN-6-INT: No BGP MD5 from [peer's IP address]
:179 to [local router's IP address]:65524
Also, if you configure different passwords on the two routers, the following message appears on the console:
%RPM0-P:RP1 %KERN-6-INT: BGP MD5 password mismatch from
[peer's IP address] : 11502 to [local router's IP address] :179
neighbor peer-group (assigning peers)
Allows you to assign one peer to an existing peer group.
Syntax
neighbor ip-address peer-group peer-group-name
To delete a peer from a peer group, use the no neighbor ip-address peer-group peer-group-name
command.
Parameters
ip-address Enter the IP address of the router to be included in the peer group.
peer-group-name Enter the name of a configured peer group.
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
You can assign up to 256 peers to one peer group.
When you add a peer to a peer group, it inherits all the peer group’s configured parameters. A peer cannot become
part of a peer group if any of the following commands are configured on the peer:
• neighbor advertisement-interval
308 Border Gateway Protocol IPv4 (BGPv4)