In routing world, Administrative Distance refers to the reliability of the routing protocol. It is equivalent to Juniper’s Route Preference and Huawei’s Preference. It is important to consider these values as in the scenario that there are multiple routes to a destination (with same prefix length), the route (learned via the routing protocol) with the lowest value is preferred.
Table below will show the values for respective platform.
|EIGRP||EIGRP Summary – 5||–||–|
|EIGRP Internal – 90||–||–|
|EIGRP External -170||–||–|
|OSPF||110||OSPF Internal -10||10|
|OSPF External -150|
|IS-IS||115||Level 1 Internal-10||15|
|Level 1 External-160|
|Level 2 Internal-18|
|Level 2 External-165|
|BGP||BGP Internal -200||170||255|
|BGP External -20|