In this article we will discuss Authentication in EIGRP, will make brief discussion on Authentication in EIGRP, In last article we discuss about Reliable Transport Protocol.
By default, no authentication is used for EIGRP packets. You can configure EIGRP to use MD5 authentication.
When EIGRP neighbor authentication has been configured on a router, the router authenticates the source of each routing update packet that it receives.
Like other routing protocols, EIGRP can be configured for authentication. RIPv2, EIGRP, OSPF, IS-IS, and BGP can each be configured to authenticate their routing information.
It is a good practice to authenticate transmitted routing information. Doing so ensures that routers only accept routing information from other routers that have been configured with the same password or authentication information.