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    Best address to use for Gateway monitoring

    Scheduled Pinned Locked Moved Routing and Multi WAN
    7 Posts 4 Posters 861 Views
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    • C
      coreybrett
      last edited by

      Do ISPs have addresses they suggest for gateway monitoring?

      Sometimes the gateway itself doesn't respond to pings consistently even though the connection itself is ok.

      I've used 8.8.8.8 and 9.9.9.9, but that seems like a hack to me.

      ISP tech support usually doesn't have a clue what I am talking about.

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      • johnpozJ
        johnpoz LAYER 8 Global Moderator
        last edited by

        @coreybrett said in Best address to use for Gateway monitoring:

        ISP tech support usually doesn't have a clue what I am talking about.

        And that is surprising to you why? Doesn't matter what the question is - if its not on their script they will not have a clue..

        An intelligent man is sometimes forced to be drunk to spend time with his fools
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        • DerelictD
          Derelict LAYER 8 Netgate
          last edited by

          The real answer is "it depends."

          It depends on how far out you want to monitor and how reliably that host responds to your pings in your situation. I am currently monitoring the ISP gateway on Cable and 8.8.4.4 on DSL.

          Keep in mind that the gateway monitor sets up a host route out that interface so monitoring an address you are not using for something else (like DNS) might lead to less head-scratching in other areas. In my example I don't use 8.8.4.4 for DNS. I am using Quad9.

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          • C
            coreybrett
            last edited by

            Is it possible to monitor more than a single address? In-case that address goes down, not the connection to it.

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            • D
              deanot
              last edited by

              You only have the option of one address per monitor..

              I just wrote a small post on this very issue, if you can help it, avoid google, I was getting high latency marking my WANS as being down. Use your own ISP if you can, if like mine they are slow, try opendns as a monitor.

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              • C
                coreybrett
                last edited by

                would be great if ISPs had nodes dedicated to this purpose, not sure how a practice like that would be encouraged from customers though

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                • C
                  coreybrett
                  last edited by

                  I was using the gateway for awhile, but felt it was giving me poor results, so I switched to 9.9.9.9, but started getting some issues with that, now I'm on 8.8.4.4, so far so good

                  the only reason I care is because it was causing my gateway group to flap, which kept reconnecting my VPN tunnels over the cellular backup

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