Thread: ACK DHCP error
View Single Post
Old 06-26-2020, 02:55 AM
volko30 volko30 is offline
Aspiring Member
Join Date: Jun 2020
Posts: 1
volko30 has 10 reputation points
Default ACK DHCP error


After clearing the phone (1608 or 9611g) it restarts, discovers Ethernet and on 0 second displays ACK error and reboots after 24 seconds.
If I set VLAN 2 in it, it gets an IP address successfully from DHCP in VLAN 2.

VLAN 1 is default, VLAN 2 is voice.
Access switches have untagged 1 and tagged 2 VLANs, also tagged 1 and 2 on ports, connected to other switches.
DHCP windows physical server port is access VLAN 1 only. It's switch is also a DHCP in VLAN 2 and has tagged 1 and 2 VLAN on port, connected to the other switches.
On windows DHCP option 242 string L2Q=1,L2QVLAN=2 is set.

There is no other DHCP server in LAN, there is only one DHCP relay.

Last edited by volko30; 06-26-2020 at 03:18 AM.
Reply With Quote