200-150 · Question #57
Which protocol is supported when OSPFv2 is used as the routing protocol?
The correct answer is C. IPv4. OSPFv2 exclusively supports IPv4, as it was designed around IPv4 addressing and packet structures defined in RFC 2328.
Question
Which protocol is supported when OSPFv2 is used as the routing protocol?
Options
- ANetBios
- BLAT
- CIPv4
- DIPv6
How the community answered
(26 responses)- A8% (2)
- B4% (1)
- C85% (22)
- D4% (1)
Why each option
OSPFv2 exclusively supports IPv4, as it was designed around IPv4 addressing and packet structures defined in RFC 2328.
NetBIOS is a legacy session-layer API for Windows name resolution and session management and has no relationship to OSPFv2 as a routed network-layer protocol.
LAT (Local Area Transport) is a proprietary Digital Equipment Corporation protocol for terminal communication and is entirely unrelated to OSPFv2 routing.
OSPFv2, standardized in RFC 2328, is built solely for IPv4 networks and uses IPv4 addresses for router IDs, neighbor adjacencies, and LSA flooding. Support for IPv6 requires OSPFv3, which is defined in RFC 5340 and uses a completely different packet format.
IPv6 is supported by OSPFv3, not OSPFv2 - OSPFv2 packet headers and LSA formats cannot accommodate 128-bit IPv6 addresses.
Concept tested: OSPFv2 IPv4-only protocol scope vs OSPFv3
Source: https://www.rfc-editor.org/rfc/rfc2328
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