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3 comments:

  1. Anonymous 02 May 2018 09:47
    Thanks for the update. So interoperability between vendors would still be a dream? Or is it on purpose?
    Replies
    1. Ivan Pepelnjak 02 May 2018 16:55
      Regardless of the sanity of trying to build a multi-vendor fabrics (let's not go there), EVPN seems to be pretty solid when it comes to L2-only forwarding in simple environments (IGP + IBGP). L3 is still a bit murky (asymmetric versus symmetric), as is multi-fabric behavior (changing next hops on fabric edge).

      The true "beauties" start when vendors try to persuade you to use "interesting" designs like running IBGP over EBGP for no good reason (apart from lock-in).
    2. AlexM 03 May 2018 20:49
      Actually it works (depending on which IRB methods / evpn prefix adv the vendors support, like Ivan said). See interops test result from the MPLS Forum (2017) :

      http://www.eantc.de/fileadmin/eantc/downloads/events/2011-2015/MPLSSDNNFV_2017/EANTC-MPLSSDNNFV2017-WhitePaper-Final_v2.pdf

      Here is the latest that happened 1 month ago :

      http://www.eantc.de/fileadmin/eantc/downloads/events/2017-2020/MPLS2018/EANTC-MPLSSDNNFV2018-WhitePaper-final.pdf

      I tested in my lab interoperability between Arista & Cisco 9K just for fun (no reason to mix leaf/spine from different vendors I agree :) )
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