200-301 · Question #752
What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two.)
The correct answer is B. It can support multiple IPv6 subnets on a single link. D. It routes over links rather than over networks.. OSPFv3 enhances OSPFv2 by supporting multiple IPv6 subnets on a single link and by routing over logical links rather than individual networks.
Question
What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two.)
Options
- AIt requires the use of ARP.
- BIt can support multiple IPv6 subnets on a single link.
- CIt supports up to 2 instances of OSPFv3 over a common link.
- DIt routes over links rather than over networks.
How the community answered
(58 responses)- A2% (1)
- B91% (53)
- C7% (4)
Why each option
OSPFv3 enhances OSPFv2 by supporting multiple IPv6 subnets on a single link and by routing over logical links rather than individual networks.
ARP (Address Resolution Protocol) is an IPv4-specific protocol; OSPFv3 is designed for IPv6, which uses Neighbor Discovery Protocol (NDP) for address resolution, not ARP.
OSPFv3 operates independently of specific IPv4 or IPv6 address families on an interface, allowing a single link to support and advertise multiple IPv6 subnets without requiring separate OSPF processes for each.
OSPFv3 supports multiple instances per link, not strictly limited to two, which allows for greater flexibility in network design and routing policy.
OSPFv3 is designed to route over logical links or interfaces rather than traditional IP networks or subnets, providing greater flexibility and better integration with IPv6's link-local addressing and multi-address capabilities.
Concept tested: OSPFv3 enhancements over OSPFv2
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15-mt/iro-15-mt-book/iro-ospf-v3.html
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