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IPv4 over OSPFV3

IPv4 over OSPFV3

Created: Oct 25, 2020 02:15:17Latest reply: Oct 25, 2020 04:55:37 375 4 5 0 0
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Hi guys,


Can IPv4 be run over OSPFV3? If that is the case, Is there any advantage compared with IPv4 over OSPFv2?


IPv4OSPFv3OSPFv2

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DragonVN
Created Oct 25, 2020 04:55:37

Hey there,


Open Shortest Path First Version 3 (OSPFv3) is a link state routing protocol. Unlike OSPFv2, which supports IPv4, the original implementation of OSPFv3 supports IPv6 (unicast only). With the introduction of OSPFv3 support for address families (AFs), OSPFv3 now can support IPv4 unicast address families. 


S.NOOSPFV2OSPFV3
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.OSPFv3 have nine link-state advertisement.
4.There is only one instance per link, in OSPFv2.While there are many instances per link, in OSPFv3.
5.In OSPFv2, many OSPF instances per interface are not supported.Whereas in OSPFv3, many OSPF instances per interface are supported.
6.There is no flooding space in OSPFV2.While there is present flooding space in OSPFv3.
7.OSPFv2 runs on subnets rather than links.While OSPFv3 runs on links rather than subnets.
8.Need network mask for adjacency formation.Doesn’t need network mask for adjacency formation.
9.MD5 Hashing is used for Authentication.IPSec is used for Authentication.
10.Nodes from different subnets can’t communicate.Nodes from different subnets can communicate.

Hope this help

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Herediano
Herediano Created Oct 25, 2020 15:52:55 (0) (0)
Thank you @DragonVN

I guess that with OSPFv3 AFs it easier to handle an IPv4/IPv6 network simultaneously.  

Recommended answer

(1) (0)
jason_hu
Admin Created Oct 25, 2020 04:00:31

Hello,

OSPFv3 is designed for IPv6. It only supports IPv4 when setting the router ID.

Hope to help you!

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jason_hu
jason_hu Admin Created Oct 25, 2020 02:15:44

Hello,
It's nice to meet you in the community.
We're working on your problem. Please be patient.
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3#
jason_hu
jason_hu Admin Created Oct 25, 2020 04:00:31

Hello,

OSPFv3 is designed for IPv6. It only supports IPv4 when setting the router ID.

Hope to help you!

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  • convention：
(2) (0)
4#
DragonVN
DragonVN Created Oct 25, 2020 04:55:37

Hey there,


Open Shortest Path First Version 3 (OSPFv3) is a link state routing protocol. Unlike OSPFv2, which supports IPv4, the original implementation of OSPFv3 supports IPv6 (unicast only). With the introduction of OSPFv3 support for address families (AFs), OSPFv3 now can support IPv4 unicast address families. 


S.NOOSPFV2OSPFV3
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.OSPFv3 have nine link-state advertisement.
4.There is only one instance per link, in OSPFv2.While there are many instances per link, in OSPFv3.
5.In OSPFv2, many OSPF instances per interface are not supported.Whereas in OSPFv3, many OSPF instances per interface are supported.
6.There is no flooding space in OSPFV2.While there is present flooding space in OSPFv3.
7.OSPFv2 runs on subnets rather than links.While OSPFv3 runs on links rather than subnets.
8.Need network mask for adjacency formation.Doesn’t need network mask for adjacency formation.
9.MD5 Hashing is used for Authentication.IPSec is used for Authentication.
10.Nodes from different subnets can’t communicate.Nodes from different subnets can communicate.

Hope this help

View more
  • x
  • convention：

Herediano
Herediano Created Oct 25, 2020 15:52:55 (0) (0)
Thank you @DragonVN

I guess that with OSPFv3 AFs it easier to handle an IPv4/IPv6 network simultaneously.  
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