Refer to the exhibit. Router CiscoVille has been partially configured for EIGRP authentication. What is missing that would allow successful authentication between EIGRP neighbors?
- The interfaces that will use EIGRP authentication must be specified.
- A username and password must be configured.
- The keychain for EIGRP authentication must be configured on the interfaces.
- The CiscoVille router requires a second keychain to function correctly when using two interfaces for EIGRP authentication.
Explanation: The ip authentication key-chain eigrp 1 EIGRP_key command for EIGRP authentication has not been applied on each interface that participates in EIGRP authentication. EIGRP authentication steps include the creation of a keychain, a key ID, and a key string that is the equivalent of a password. EIGRP authentication is used on interfaces by selecting the interface to configure and then enabling MD5 authentication. Finally, EIGRP authentication is activated when the keychain to be used is issued on the interface.
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