Is OSPFv3 and OSPFv2 compatible?
Constants and variables such as timers and metrics are also the same. Another similarity to the relationship of RIPng to RIPv2 is that OSPFv3 is not backward-compatible with OSPFv2. So if you want to use OSPF to route both IPv4 and IPv6, you must run both OSPFv2 and OSPFv3.
In which ways is OSPFv2 similar to OSPFv3 for IPv6?
OSPFv2 and OSPFv3 are very similar. OSPFv3 still establishes neighbor adjacencies, has areas, different network types, the same metrics, runs SPF, etc. There are however some differences. OSPFv2 runs on top of IPv4 and since OSPFv3 runs on IPv6, some changes had to be made.
Is OSPFv3 only for IPv6?
Organizations now have multiple options for deploying OSPF. Organizations can stick with OSPFv2 for IPv4, and then use OSPFv3 for IPv6-only for a configuration that separates the control planes and the forwarding planes.
What is the OSPFv3 router ID?
The Router ID uniquely identifies the router in the autonomous system. By default, Gaia Operating System selects the highest IPv4 address from all configured interfaces. The Router ID is used by the OSPFv3 and BGP protocols.
What is OSPFv3?
Open Shortest Path First version 3 (OSPFv3) is an IPv4 and IPv6 link-state routing protocol that supports IPv6 and IPv4 unicast address families (AFs).
How big is the header size of OSPFv2?
1. OSPFv2 is the IPv4’s OSPF version. While OSPFv3 is the IPv6’s OSPF version. 2. The header size of OSPFv2 is 24 bytes. While the header size of OSPFv2 is 16 bytes. 3. OSPFv2 have seven link-state advertisement.
What’s the difference between OSPFv2 and OSPF v3?
There are few similarities present between OSPFv3 and OSPFv2, which are: Besides these similarities, there are some differences which are given below: 1. OSPFv2 is the IPv4’s OSPF version.
How are OSPF instance IDs used in OSPFv2?
In OSPFv2 the intera-area prefix information was carried in the router and network LSA’s (Type 1 & 2). Instance ID is a new field that is used to have multiple OSPF process instance per link. In order for 2 instances talk to each other they need to have the same instance ID.
Is it possible to have multiple OSPFv3 routers?
OSPFv3 routers will only become neighbors if the instanceIDs match. It is thus possible to have multiple routers on a broadcast domain and all run Ospfv3 but not all of them becoming neighbours. Note: Interface ID is a 32-bit number uniquely identify an interface, virtual link gets its own interface ID.