Cisco CCNP / BCSI Exam Tutorial: Configuring EIGRP Packet Authentication
Configuring RIPv2 and EIGRP authentication with key chains can be tricky at first, and the syntax isn’t exactly easy to remember. But for BSCI and CCNP exam success, we’ve got to be able to perform this task.
In a previous tutorial, we saw how to configure RIPv2 packet authentication, with both clear-text and MD5 authentication schemes. EIGRP authentication is much the same, and has the text and MD5 authentication options as well. But EIGRP being EIGRP, the command just has to be a little more detailed!
As with RIPv2, the authentication mode must be agreed upon by the EIGRP neighbors. If one router’s interface is configured for MD5 authentication and the remote router’s interface is configured for text authentication, the adjacency will fail even if the two interfaces in question are configured to use the same password.
We’ll now configure link authentication on the adjacency over an Ethernet segment. Below, you’ll see how to configure a key chain called EIGRP on both routers, use key number 1, and use the key-string BSCI. Run show key chain...
To view and download this full PLR article, you must be logged in. Registration is completely free. Once you create your account, you will be able to browse, search & downlod from our PLR articles database of over "1,57,897+" on 1,000's of niches and 200+ categories without paying a penny. Click here to signup...
