Administrator Guide

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.
C9000 Series
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
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
Usage
Information
You can assign up to 256 peers to one peer group.
Border Gateway Protocol 373