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Cisco Nexus 3548 Switch NX-OS Unicast Routing Command Reference
OL-27852-01
Chapter Unicast Routing Commands
ip authentication key-chain eigrp
ip authentication key-chain eigrp
To enable authentication for the Enhanced Interior Gateway Routing Protocol (EIGRP) packets and to
specify the set of keys that can be used on an interface
, use the ip authentication key-chain eigrp
command. To prevent authentication, use the no form of this command.
ip authentication key-chain eigrp instance-tag name-of-chain
no ip authentication key-chain eigrp instance-tag name-of-chain
Syntax Description
Command Default No authentication is provided for EIGRP packets.
Command Modes Interface configuration mode
Command History
Usage Guidelines You must set the authentication mode using the ip authentication mode eigrp command in interface
configuration mode. You must separately configure a key chain using the key-chain command to
complete the authentication configuration for an interface.
This command requires the LAN Base Services license.
Examples This example shows how to configure the interface to accept and send any key that belongs to the
key-chain trees:
switch# configure terminal
switch(config)# router eigrp 209
switch(config-router)# interface ethernet 1/2
switch(config-if)# no switchport
switch(config-if)# ip authentication key-chain eigrp 209 trees
switch(config-if)#
Related Commands
instance-tag Name of the EIGRP instance. The instance-tag can be any case-sensitive,
alphanumeric string up to 20 characters.
name-of-chain Group of keys that are valid.
Release Modification
5.0(3)A1(1) This command was introduced.
Command Description
ip authentication mode eigrp Sets the authentication mode for EIGRP 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.
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