Information
Define an authentication key chain to enable authentication for routing protocols. A key chain must have at least one key and can have up to 2,147,483,647 keys.
NOTE: Only DRP Agent, EIGRP, and RIPv2 use key chains.
Rationale:
Routing protocols such as DRP Agent, EIGRP, and RIPv2 use key chains for authentication.
Solution
Establish the key chain.
hostname(config)#key chain {key-chain_name}
Impact:
Organizations should plan and implement enterprise security policies that require rigorous authentication methods for routing protocols. Using 'key chains' for routing protocols enforces these policies.
Default Value:
Not set
References:
http://www.cisco.com/en/US/docs/ios-xml/ios/iproute_pi/command/iri-cr-a1.html#GUID-A62E89F5-0B8B-4CF0-B4EB-08F2762D88BB