key

Description                                                    Configure a key chain for use by RIP or IS-IS MD5 authentication.

Syntax                                                                  [no] key chain name

Replace name with the name of the key chain (1-31 characters).

This command changes the CLI to the configuration level for the specified key chain, where the following key-chain related command is available:

[no] key num

This command adds a key and enters configuration mode for the key. The key number can be 1-255. This command changes the CLI to the configuration level for the specified key, where the following key-related command is available:

[no] key-string string

This command configures the authentication string of the key, 1-16 characters.

Default                                                                By default, no key chains are configured.

Mode                                                                   Global Config

Usage                                                                  Although you can configure multiple key chains, it is recommends using one key chain per interface, per routing protocol.

Example                                                            The following commands configure a key chain named “example_chain”.

ACOS(config)#key chain example_chain

ACOS(config-keychain)#key 1

ACOS(config-keychain-key)#key-string thisiskey1

ACOS(config-keychain-key)#exit

ACOS(config-keychain)#key 2

ACOS(config-keychain-key)#key-string thisiskey2

ACOS(config-keychain-key)#exit

ACOS(config-keychain)#key 3

ACOS(config-keychain-key)#key-string thisiskey3

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