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Chapter 39
Configuring IP Unicast Routing
Use the no forms of these commands to disable the feature or to return the setting to the default value.
Configuring EIGRP Route Authentication
EIGRP route authentication provides MD5 authentication of routing updates from the EIGRP routing
protocol to prevent the introduction of unauthorized or false routing messages from unapproved sources.
Beginning in privileged EXEC mode, follow these steps to enable authentication:
Command
Step 1
configure terminal
Step 2
interface interface-id
Step 3
ip authentication mode eigrp autonomous-system md5
Step 4
ip authentication key-chain eigrp autonomous-system
key-chain
Step 5
exit
Step 6
key chain name-of-chain
Step 7
key number
Step 8
key-string text
Step 9
accept-lifetime start-time {infinite | end-time | duration
seconds}
Step 10
send-lifetime start-time {infinite | end-time | duration
seconds}
Step 11
end
Step 12
show key chain
Step 13
copy running-config startup-config
Use the no forms of these commands to disable the feature or to return the setting to the default value.
OL-13270-06
Purpose
Enter global configuration mode.
Enter interface configuration mode, and specify the
Layer 3 interface to configure.
Enable MD5 authentication in IP EIGRP packets.
Enable authentication of IP EIGRP packets.
Return to global configuration mode.
Identify a key chain, and enter key-chain configuration
mode. Match the name configured in Step 4.
In key-chain configuration mode, identify the key
number.
In key-chain key configuration mode, identify the key
string.
(Optional) Specify the time period during which the key
can be received.
The start-time and end-time syntax can be either
hh:mm:ss Month date year or hh:mm:ss date Month
year. The default is forever with the default start-time
and the earliest acceptable date as January 1, 1993. The
default end-time and duration is infinite.
(Optional) Specify the time period during which the key
can be sent.
The start-time and end-time syntax can be either
hh:mm:ss Month date year or hh:mm:ss date Month
year. The default is forever with the default start-time
and the earliest acceptable date as January 1, 1993. The
default end-time and duration is infinite.
Return to privileged EXEC mode.
Display authentication key information.
(Optional) Save your entries in the configuration file.
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
Configuring EIGRP
39-45
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