Is OSPFv2 and OSPFv3 compatible?

Is OSPFv2 and OSPFv3 compatible?

Operation of OSPFv3 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.

Does IPv4 support OSPFv3?

OSPFv3 does not only support exchange of IPv6 routes, but it also supports exchange of IPv4 routes. The newest OSPFv3 configuration approach utilizes a single OSPFv3 process. It is capable of supporting IPv4 and IPv6 within a single OSPFv3 process.

What is the OSPFv2?

Open Shortest Path First Version 2 (OSPFv2) is a link-state routing protocol that uses link-state advertisements (LSAs) to update neighboring routers about a router’s interfaces. Each router maintains an identical area-topology database to determine the shortest path to any neighboring router.

Does OSPFv3 provide authentication function?

OSPFv3 doesn’t have an authentication field in its header like OSPFv2 does, instead it relies on IPsec to get the job done. IPsec supports two encapsulation types. The other encapsulation type is ESP (Encapsulating Security Payload) which encrypts packets. …

Which of the following is the major difference between OSPFv2 and OSPFv3 *?

There are however some differences. OSPFv2 runs on top of IPv4 and since OSPFv3 runs on IPv6, some changes had to be made. Multiple prefixes per interface: if you have multiple IPv6 prefixes on an interface then OSPFv3 will advertise all of them. Flooding scope: OSPFv3 has a flooding scope for different LSAs.

What is OSPFv3 in networking?

OSPFv3 is the Open Shortest Path First routing protocol for IPv6. It is similar to OSPFv2 in its concept of a link state database, intra- and inter-area, and AS external routes and virtual links. It is possible to enable OSPF and OSPFv3 at the same time. OSPF works with IPv4, and OSPFv3 works with IPv6.

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 do you need to do to enable OSPFv3 on an interface?

Enabling OSPFv3

  1. Enter the configure terminal command to access global configuration mode. device# configure terminal.
  2. Enter the ip router-id command to specify the router ID.
  3. Enter the ipv6 router ospf command to enter OSPFv3 router configuration mode and enable OSPFv3 on the device.

What are the features of OSPFv3?

OSPFv3 Features

  • Basic OPSFv3.
  • OSPFv3 interface.
  • Passive interface.
  • Redistribution and its attributes.
  • OSPFv4 area parameters.
  • Virtual link.
  • External database limit.
  • Demand extension.

Is OSPF encrypted?

OSPF in WeOS support two ways of authenticating all OSPF messaging in the network, plain and MD5 authentication. Alternatively MD5 authentication can be used to secure the OSPF messages. The OSPF message is protected with a cryptographic checksum.

Which two types of LSAs are flooded only within the area in which they originated choose two?

Which two types of LSAs are flooded only within the area in which they originated? (Choose two.) Type 1 and type 2 LSAs are intra-area LSAs and are not propagated to other areas. Type 3 and 4 LSAs are flooded from one area to another by ABRs. Type 5 LSAs are flooded by ASBRs throughout the entire OSPF domain.

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 many LSA types are there in OSPFv2?

• OSPFv3 and OSPFv2 have 5 Packet Types like “Hello”,”DD”, “LSA”, “LSU”, “LSAck”. • OSPFv3 and OSPFv2 have almost Identical LSA Types (7 LSA types are same). • OSPFv3 and OSPFv2 support LSA Flooding and Aging. Basically OSPFv2 and OSPFv3 are same, especially for main characteristics.

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.

Where does OSPFv3 take its router ID from?

Like OSPFv2, OSPFv3 will take its router ID from the highest-numbered IPv4 loopback interface; however, as this IPv4 address is likely irrelevant your IPv6 network, it is recommended to manually specify a router ID with the router-id command under OSPFv3 router configuration. Support PacketLife by buying stuff you don’t need!