ETExamTower
Sign in
Q73IP Services

A network engineer is configuring an OSPFv2 neighbor adjacency. Drag the parameters from the left to their required categories on the right. Not all parameters are used. <DragDrop items={["area ID","IP address","netmask","OSPF process ID","router ID","timers"]} slots={[{"answer":"area ID","id":"slot1","group":"must match"},{"answer":"netmask","id":"slot2","group":"must match"},{"answer":"timers","id":"slot3","group":"must match"},{"answer":"IP address","id":"slot4","group":"must be unique"},{"answer":"router ID","id":"slot5","group":"must be unique"}]} explanation={"For OSPFv2 neighbors to become adjacent, they must agree on key adjacency parameters, including the area ID and hello/dead timers; on a shared segment, the interface network mask must also be consistent. The router ID must be unique for each OSPF router, and interface IP addresses on the link must also be unique. The OSPF process ID is locally significant on a router and does not have to match a neighbor.\n\n**Learn more:** [Troubleshoot OSPF Neighbor Problems](https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13699-29.html)"} reuse={false} />

← → navigate · a answer
Discussion · 7
33
From an OSPF point of view, there are a few things that have to match for a OSPF neighborship to form; these include: The devices must be in the same area The devices must have the same authentication configuration The devices must be on the same subnet The devices hello and dead intervals must match The devices must have matching stub flags https://www.expertnetworkconsultant.com/configuring/ospf-neighbor-adjacency/ So: Must Match: Area ID, NetMask, Timers Must have Unique: IP Address, Router ID "The OSPF process-id is a numeric value local to the router. It does not have to match process-ids on other routers." http://cisco2960.over-blog.com/2014/01/cisco-ospf-process-id.html
7
The given is right
1
Given answer is correct
1
its correct
1
Given answer is somehow correct. Also the must match parameters are the most useful in ospf related questions.
1
Answer is correct
1
Since nobody else has added the clarification, the Router Process ID can either match or be unique. Both work for OSPF connectivity.