Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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ip ospf message-digest-key

Enable OSPF MD5 authentication and send an OSPF message digest key on the interface.

Syntax

ip ospf message-digest-key keyid md5 key

To delete a key, use the no ip ospf message-digest-key keyid command.

Parameters

keyid	Enter a number as the key ID. The range is from 1 to 255.
key	Enter a continuous character string as the password.

Defaults

No MD5 authentication is configured.

Command Modes

INTERFACE

Supported Modes

Full—Switch

Command History

Version	Description
9.9(0.0)	Introduced on the FN IOM.
8.3.16.1	Introduced on the MXL 10/40GbE Switch IO Module.

Usage Information

You can configure a maximum of six digest keys on an interface. Of the available six digest keys, the switches select the MD5 key that is common. The remaining MD5 keys are unused.

To change to a different key on the interface, enable the new key while the old key is still enabled. The system sends two packets: the first packet authenticated with the old key and the second packet authenticated with the new key. This process ensures that the neighbors learn the new key and communication is not disrupted by keeping the old key enabled.

After the reply is received and the new key is authenticated, delete the old key. Dell recommends keeping only one key per interface.

NOTE: The MD5 secret is stored as plain text in the configuration file with service password encryption. Write down or otherwise record the key. You cannot learn the key once it is configured. Use caution when changing the key.