I confirmed that the DHCP server gets the discovery packet, but as that 20287 states, it never sends ACK or an offer to the phones. I ran a wireshark from the DHCP server as well as the phone. All other devices (Apple, Linux, IPhones, Android devices) get a proper DHCP. As in both MiTel and Yealink phones sit at "Waiting for IP address". What is very strange is that the only devices not getting DHCP from this scope are VoIP phones. I expanded the scope (although it wasn't out at the time) and currently have about 60 addresses available. This could be because of IP address ranges of a policy being out of available IP addresses. Here is the error we get:ĭHCP client request from 08000FB342BE was dropped since the applicable IP address ranges in scope/superscope SCOPENAME Scope are out of available IP addresses. We are having an issue where DHCP addresses are no longer being handed out and the DHCP error 20287 is logged.
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