Ask is moving to Stack Overflow and! Please use the "opendaylight" tag on either of these sites. This site is now in Read-Only mode


Do we need routing protocols in SDN?

asked 2016-01-11 19:51:43 -0700

hghalwash gravatar image

I understand that SDN is all about adding flow entries using Openflow protocol, which is not a routing protocol, I am confused about the following points.

  1. As known, routing protocols simply construct the routing table based on understanding network topology. what are the case that will need routing protocols in our SDN networks? would it be only when using multiple controllers?

  2. Is there any available routing protocols that are ready to be used in opendaylight?

edit retag flag offensive close merge delete

1 answer

Sort by ยป oldest newest most voted

answered 2016-01-15 06:18:55 -0700

runamuck gravatar image

Routing protocols allow autonomous nodes to get visibility to global network state. With OpenDaylight (which can accomodate OpenFlow among others) you have a centralized controller or cluster of controllers that immediately know global state. So, ideally, you would not need routing protocols. You may chose to use routing protocols independent of your OpenDaylight controlled network, i.e. an underlay or overlay network. That being said, you can integrate with other non ODL controlled networks using BGP or IS-IS for example.

A good way of looking at SDN/ NFV is that all your nodes (which used to run STP, LACP, OSPF or whatever) just become a pile of interfaces and backplanes that ODL can use as resources.

edit flag offensive delete publish link more
Login/Signup to Answer

Question Tools

1 follower


Asked: 2016-01-11 19:51:43 -0700

Seen: 624 times

Last updated: Jan 15 '16