Dell Command Line Reference Guide for the S4048–ON System 9.14.2.4

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neighbor password

Enable message digest 5 (MD5) authentication on the TCP connection between two neighbors.

Syntax
neighbor {ip-address | peer-group-name} password [encryption-type] password

To delete a password, use the no neighbor {ip-address | peer-group-name} password 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.
encryption-type
(OPTIONAL) Enter 7 as the encryption type for the password entered. 7 means that the password is encrypted and hidden.
password

Enter a text string up to 80 characters long. The first character of the password must be a letter.

You cannot use spaces in the password.

Defaults
Not configured.
Command Modes
ROUTER BGP
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Version
Description
9.10(0.1)
Introduced on the S6010-ON and S4048T-ON.
9.10(0.0)
Introduced on the S3148.
9.10(0.0)
Introduced on the S6100-ON.
9.8(2.0)
Introduced on the S3100 series.
9.8(1.0)
Introduced on the Z9100–ON.
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.7(0.0)
Introduced on the S6000–ON.
9.2(1.0)
Introduced on the Z9500.
9.0.2.0
Introduced on the S6000.
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

This command automatically restarts the neighbor session for the configuration to take effect.

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

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