What is the value for the 'Protocol' field corresponding to OSPF?

The value for the 'Protocol' field corresponding to Open Shortest Path First (OSPF) in the Internet Protocol (IP) is 89. This number is defined in the Internet Assigned Numbers Authority (IANA) protocol numbers list, where various protocols are assigned unique identifiers for use in network communication.

OSPF is a widely used interior gateway protocol (IGP) that facilitates the exchange of routing information within a single autonomous system. It is a link-state routing protocol that uses a method of flooding to distribute routing information efficiently, allowing routers to maintain accurate and up-to-date routing tables.

Understanding the numeric value assigned to OSPF is essential for network professionals, as it is often referenced in various networking tools and protocols where protocol identification is necessary. This knowledge assists in configuring and troubleshooting network devices that utilize OSPF for routing.