Which of the following describe the process identifier that is used to run OSPF on a router?
(Choose two)
A.
It is locally significant.
B.
It is globally significant.
C.
It is needed to identify a unique instance of an OSPF database.
D.
It is an optional parameter required only if multiple OSPF processes are running on the router.
E.
All routers in the same OSPF area must have the same process ID if they are to exchange
routing information.
OSPF process-id just needs to be unique on the local router, allowing the router to support multiple OSPF processes in a single router by using different process IDs. (The router command uses the process-id to distinguish between the processes.) The process-id does not have to match on each router, and it can be any integer between 1 and 65,535
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).