ip authentication mode eigrp

To specify the type of authentication used in the Enhanced Interior Gateway Routing Protocol (EIGRP) packets, use the ip authentication mode eigrp command. To remove authentication, use the no form of this command.

ip authentication mode eigrp instance-tag md5

no ip authentication mode eigrp instance-tag md5

Syntax Description

instance-tag
Name of the EIGRP instance. The instance-tag can be any case-sensitive, alphanumeric string up to 20 characters.
md5
Specifies Message Digest 5 (MD5) authentication.

Command Default

None

Command Modes

Interface configuration mode

Command History

Release
Modification
5.0(3)N1(1)
This command was introduced.

Usage Guidelines

This command requires the LAN Base Services license.

Examples

This example shows how to configure the interface to use MD5 authentication:

switch(config)# router eigrp 209
switch(config-router)# interface ethernet 1/2
switch(config-if)# no switchport
switch(config-if)# ip authentication mode eigrp 209 md5
switch(config-if)#
 

Related Commands

Command
Description
authentication mode (EIGRP)
Configures the authentication mode for EIGRP in a VRF.
copy running-config startup-config
Copies the configuration changes to the startup configuration file.
ip authentication key-chain eigrp
Enables authentication for EIGRP and specifies the set of keys that can be used on an interface.
key chain
Creates a set of keys that can be used by an authentication method.
show ip eigrp interfaces
Displays information about EIGRP interfaces.