I currently have a setup with multiple cisco SG300 switches and ayava ip office . Currently on the first floor we have a router and two SG switches . The router is connected directly to SW 1 and then connected via another port to the SW 2 and so on. A separate DHCP server is also setup through a windows 2003 domain controller.
On the ground floor,we have the pbx connected to port 12 on switch 4 (with only the Voice Vlan tagged).Another uplink on switch 4 is connected to switch 3 and then switch 3 is connected to switch 2 via a trunk port .
The phones on the first floor are able to be up and the pc plugged directly into the back of the phone and they are able to get a data ip address and work fine. This is with each port programmed with the voice vlan as tagged and the data as untagged PVID.
The phones on the ground floor work with the same settings for a very short time after which the phones drop connection and the pc remains up. The error on the phone says no file server address or DHCP discover .
Also,from a user machine in a data vlan we are not able to browse to all the switches on the network.
Can anyone confirm of any errors I have made as well as the settings that should be on each switch port that is connected as a trunk ?
A picture is attached with the setup.