Command:

ip authentication mode eigrp


Mode:

Router(config-if)#


Syntax:

ip authentication mode eigrp as-number md5 no ip authentication mode eigrp as-number md5

 

Syntax Description:

as-number Autonomous system number.
md5 Keyed Message Digest 5 (MD5) authentication.

 

Command Description:

To specify the type of authentication used in Enhanced IGRP (EIGRP) packets, use the ip authentication mode eigrp command in interface configuration mode. To disable that type of authentication, use the no form of this command.

Configure authentication to prevent unapproved sources from introducing unauthorized or false routing messages. When authentication is configured, an MD5 keyed digest is added to each EIGRP packet in the specified autonomous system.


Example:

The following example configures the interface to use MD5 authentication in EIGRP packets in autonomous system 10:

Router(config-if)#ip authentication mode eigrp 10 md5


Misconceptions:

None


Related Commands:

accept-lifetime
ip authentication key-chain eigrp
key
key chain
key-string
send-lifetime

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