Command:

ip ospf authentication-key


Mode:

Router(config-if)#

Syntax:

ip ospf authentication-key password

no ip ospf authentication-key


Syntax Description:

password

Any continuous string of characters that can be entered from the keyboard up to 8 bytes in length.


Command Description:

To assign a password to be used by neighboring routers that are using OSPF's simple password authentication, use the ip ospf authentication-key interface configuration command. To remove a previously assigned OSPF password, use the no form of this command.

The password created by this command is used as a "key" that is inserted directly into the OSPF header when the Cisco IOS software originates routing protocol packets. A separate password can be assigned to each network on a per-interface basis. All neighboring routers on the same network must have the same password to be able to exchange OSPF information.


Example:

The following example enables the authentication key with the string yourpass:

Router(config-if)#ip ospf authentication-key yourpass

Misconceptions:

The Cisco IOS software will use this key only when authentication is enabled for an area with the area authentication router configuration command.


Related Commands:
None

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