Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Why does DHCP Status wrongly shows endpoints as Offline while they are Online?

    General pfSense Questions
    2
    6
    2.6k
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • T
      torontob
      last edited by

      Hello,

      We have DHCP static set for all the Aastra SIP phones installed in the office. When I browse to Status > DHCP Leases I see that many of SIP phones are offline while they are really online.

      This is confusing, ambiguous and wrong info no matter where the information comes from or how it's taken. It could be that when it gets closer to the end of the day and there are no packets transferring from the phones that they show offline on the DHCP Lease table. Is there a way to get pfSense 1.2.3 to properly display this info. To me Offline mean Offline.

      Thanks

      1 Reply Last reply Reply Quote 0
      • jimpJ
        jimp Rebel Alliance Developer Netgate
        last edited by

        http://doc.pfsense.org/index.php/Why_does_the_DHCP_Leases_page_show_active_systems_offline%3F

        Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

        Need help fast? Netgate Global Support!

        Do not Chat/PM for help!

        1 Reply Last reply Reply Quote 0
        • T
          torontob
          last edited by

          Thanks for the clarification. Why isn't the device in the ARP table in the first place? Do you think that is a fault of the endpoint device?

          1 Reply Last reply Reply Quote 0
          • jimpJ
            jimp Rebel Alliance Developer Netgate
            last edited by

            It simply may not have tried to communicate through the gateway in a while and timed out of the arp cache. It's quite common.

            Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

            Need help fast? Netgate Global Support!

            Do not Chat/PM for help!

            1 Reply Last reply Reply Quote 0
            • T
              torontob
              last edited by

              Except for it's not a computer and it's a phone which goes down and then it has to be plugged and unplugged and it's annoying to the user.

              I need to find a solid workaround for this. So far, setting the register timeout for the SIP user on the phone didn't help. There is not option to renew to retry timeout for DHCP on the phone. So, maybe I can somehow send packets or pings to the phone?

              Would the ARPING package help me at all?

              ***I still don't understand why an endpoint loose touch with the router and not try to re obtain it's IP. The phone is an Aastra model.

              1 Reply Last reply Reply Quote 0
              • jimpJ
                jimp Rebel Alliance Developer Netgate
                last edited by

                If that is the case, its lack of presence in the ARP table is probably not the cause of the issue, but another indicator that it is not communicating properly on the network.

                If it were actually sending packets to the firewall, it would show back up in the ARP table.

                arping wouldn't help.

                Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

                Need help fast? Netgate Global Support!

                Do not Chat/PM for help!

                1 Reply Last reply Reply Quote 0
                • First post
                  Last post
                Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.