Categories
CCNP Enterprise Core (350-401) Cisco Routing

Administrative Distance

When each routing protocol on a router receives information, it will attempt to install any routing paths into the routing table.

If the route already exists in the routing table, the administrative distance is compared and the routing protocol with the lower administrative distance is inserted into the routing protocol.

Routing ProtocolDefault Administrative Distance
Connected0
Static1
EIGRP Summary Route5
External BGP (EBGP)20
EIGRP (Internal)90
OSPF110
IS-IS115
RIP120
EIGRP (External Sourced)170
Internal BGP (IBGP)200
Default Administrative Distances of Routing Protocols

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