I think the information you posted pretty much sum's it up. OTV can span layer-3 hops, fabric-path is all layer-2. I'm sure someone from cisco can elaborate further, but the differences are simple since there are existing protocols that do the same things. OTV is like VPLS/L2VPN without mpls (the good and the bad). Last I checked they used ISIS behind the scenes to send mac address information about and handle loop avoidance similar to what VPLS does. Fabric-path is similar to TRILL or DCB/PBB. It just finds a way around the spanning-tree limitations of blocked ports allowing layer-2 domains to scale further. I think fabric-path also supports FCoE. I will admit I know more about the standards based stuff than the cisco proprietary protocols.
2012/3/12 Nargos Ftw <[email protected]> > Hello. > > Hope you read it. > I was on google looking for information about differences between OTV and > Fabricpath and found this post of yours: > > http://www.gossamer-threads.com/lists/cisco/nsp/134263?do=post_view_threaded#134263 > > In that post, you mention that: > "OTV is a technology that allows us to extend L2 across any L3 (IP) > infrastructure. Cisco Fabric Path is in essence the ability to run L2 > networks without spanning tree and all links active." > > I have 2 datacenters and must extend 2 VLANs. So i tought "Wow, thats OTV > for sure." > Then, after researching a little i found that Fabricpath would do the job > too. > All i need is interconnect 2 DCs with DWDM and 2 VLANs must be extended. > Fabricpath is cheaper than OTV. > I feel dumb, but i cant see the difference between them. > Both maps L2 address dynamically. > Both uses routing logic. > I know that cisco recommends OTV in this case, but Fabricpath would work > fine. > > *What should i do and could you please show me the differences between OTV > and Fabricpath?* All i see on cisco webpage are presales webpages and > configuration guides. > > Thank you so much. > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
