Hi all,
We have 1 computer on DHCP client, from MikroTik log, it says DHCP offered but never bound.
What might be the issue?
Cheers
No one has the clue?
The device is not accepting the offer. You may have one way communication (broadcast from the device can reach the DHCP server but the response packet from DHCP server cannot reach the device). It is also possible that the device is ignoring the offer because maybe it has gotten an offer from another DHCP server on the same network more quickly than the MikroTik.
Tried to find a clue, several times, and many people did (like in : http://forum.mikrotik.com/t/ros-6-38-serious-dhcp-server-problem/105259/1) . But so far I only see things that might make it work, without understanding why.
Things like disabling the STP protocol on the bridge. (some suspect timing issues with STP and even RSTP when a WLAN has to wake up etc …)
The process is well known … http://www.tcpipguide.com/free/t_DHCPLeaseAllocationProcess-2.htm , but the Mikrotik DHCP seems to have a problem when probing the offered address at the end. Failing that, and dropping the bound status. But it is not clear what the cause is, or how to remediate it. (broadcast setting, authority setting, delay setting, other DHCP server, …)
Even once had a problem with a disabled DHCP server in a Linksys gateway, that sent an DHCPNAK to every request that it saw … .A special interpretation of the status “disabled” ?