Minimum Parameters for OSPFV2 Interface Configuration
Question
Which two minimum parameters must be configured on an active interface to enable OSPFV2 to operate? (Choose two.)
Answers
Explanations
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A. B. C. D. E.AE
To enable OSPFv2 to operate on an interface, two minimum parameters that must be configured are:
OSPF process ID: OSPFv2 uses process ID as a way of separating OSPF instances on a router. The process ID identifies a particular OSPF instance on a router and is locally significant, which means that it only needs to be the same on routers that are part of the same OSPF area. A router can have multiple OSPFv2 process IDs running simultaneously, each with different configurations.
OSPF area: OSPFv2 organizes the network into areas for efficient routing. Each router in an OSPFv2 domain is assigned to at least one area, and all the routers within an area have the same OSPFv2 database, which simplifies the routing calculations. To enable OSPFv2 on an interface, the area to which the interface belongs must be specified.
Therefore, the correct answers to this question are A. OSPF process ID and E. OSPF area. The other options are not necessary for enabling OSPFv2 on an interface:
- OSPF MD5 authentication key is used to authenticate OSPFv2 packets exchanged between routers in the same OSPF domain, but it is not a requirement for OSPFv2 to operate on an interface.
- OSPF stub flag is used to configure an OSPFv2 interface as a stub, which means that it does not participate in certain types of OSPFv2 traffic, but it is not a minimum requirement for enabling OSPFv2 on an interface.
- IPv6 address is not related to OSPFv2, as it is used for OSPFv3.
