What is the default administrative distance of the OSPF routing protocol?

Open Shortest Path First (OSPF) is a routing protocol for Internet Protocol (IP) networks. It uses a link state routing algorithm and falls into the group of interior routing protocols, operating within a single autonomous system (AS).

On Cisco routers, routes issued by OSPF have a higher (default) administrative distance than routes issued by the Routing Information Protocol. By default, OSPF has a default administrative distance of 90 and RIP has a default administrative of 120

Administrative distance (AD) is an arbitrary numerical value assigned to dynamic routes, static routes and directly-connected routes. The value is used by vendor-specific routers to rank routes from most preferred to least preferred.[1][2] When multiple paths to the same destination are available, the router uses the route with the lowest administrative distance and inserts the preferred route into its routing table.

List of Routing Protocol Administrative Distance Value

External Border Gateway Protocol (eBGP) 20
Internal EIGRP 90
IGRP 100
OSPF 110
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List of Routing Protocol Administrative Distance Value – …