What is the administrative distance of an internal EIGRP route?

The administrative distance of an internal EIGRP (Enhanced Interior Gateway Routing Protocol) route is:

• 90

Explanation:

Administrative distance is a metric used by routers to choose the best path when there are multiple routes to the same destination from different routing sources. It represents the reliability or trustworthiness of the route, with lower values indicating more preferred routes.

EIGRP, developed by Cisco, is an advanced distance-vector routing protocol that includes features of both distance-vector and link-state protocols. It’s known for its efficiency and scalability in larger network architectures.

The administrative distance for internal EIGRP routes is set to 90. This is in contrast to OSPF (Open Shortest Path First) which has a default administrative distance of 110, IS-IS (Intermediate System to Intermediate System) which is 115, and BGP (Border Gateway Protocol) where external routes have an administrative distance of 20 and internal routes have an administrative distance of 200. The administrative distance for internal EIGRP routes signifies a high level of trust in the routing information it provides, making it a preferred choice over many other dynamic routing protocols in networks where it is configured.