2 Replies Latest reply on Jul 4, 2018 1:56 AM by Chris Mentjox

    Bidirectional Forwarding Detection (BFD) - NSX Edge

    rajeevsrikant Expert
    vExpertCommunity Warriors

      From NSX 6.2.3 Bidirectional Forwarding Detection is available to avoid split brain scenario.

      I could not find much explanation how this works ?

      Any one has idea ?

        • 1. Re: Bidirectional Forwarding Detection (BFD) - NSX Edge
          smitmartijn Hot Shot
          VMware EmployeesvExpert

          Hi,

           

          BFD is a pretty universal method to detect whether a certain connectivity/link is online. The NSX Edges establish a BFD session between themselves, which can detect a failure of the primary edge quicker than the previous method used. 

           

          Below is a copy/paste from a BFD explanation:

           

          The Bidirectional Forwarding Detection (BFD) protocol is a simple mechanism that detects failures in a network and works in a wide variety of network environments and topologies. In BFD operation, switches exchanges BFD hello packets at a specified interval and detect a neighbor failure if they do not receive a reply after a specified interval. The BFD failure detection timers support shorter time limits than the static route failure detection mechanisms, so they can provide faster detection of failures.

           

          Does this answer your question?

           

           

           

           

           

          • 2. Re: Bidirectional Forwarding Detection (BFD) - NSX Edge
            Chris Mentjox Enthusiast

            Hi,

             

            What about bfd upstream ? i.e. between DLR and edge (ecmp) and edge (ecmp) and the physical router ?

            If 6.4 has bfd support, it should be possible to use it ?

             

            thx!

             

            Chris