What is the default administrative distance of OSPF?

The default administrative distance of OSPF is 110. Administrative distance is a value used by routers to determine the reliability of different routing protocols. It helps routers select the best route when multiple routes to the same destination exist from different protocols.

OSPF (Open Shortest Path First) is a popular link-state routing protocol used within an autonomous system (AS). Its default administrative distance of 110 indicates that OSPF routes are considered less reliable compared to other routing protocols such as EIGRP, which has a distance of 90. However, OSPF is more reliable than RIP, which has an administrative distance of 120. This value reflects the design and intended usage of OSPF within network environments, recognizing it as a robust and efficient routing protocol for larger networks.

Understanding the administrative distances associated with different routing protocols is crucial for network professionals, as it affects route selection and overall network performance.