Do any of you guys know why you to have to specify a SHA-256 password as well when using the key chain for the key chain method to work?
I understand you have two elements to this:
The authentication mode: MD5/SHA 256
The authentication method: key-chain/password
But the key chain method wont work until the mode is specified and the only way you can specify the sha256 mode is by using a password as well, this makes no sense to me as when you view the authentication being used with the show commands it even states the keychain is being used.
R4#show eigrp address-family ipv4 1 interfaces detail | inc Auth
Authentication mode is HMAC-SHA-256, key-chain is “EIGRP”
But it has to have a password as well to work:
af-interface Ethernet0/0
authentication mode hmac-sha-256 EIGRP
authentication key-chain EIGRP
exit-af-interface
This to me makes no sense…