There is an Issue when you use Polycom VVX and/or Trio Phones with Ubiquiti UniFi Switches: The Phones switch or jump between the Voice VLAN and the Data VLAN.
For the moment, it looks look an LLDP-MED Issue: if you reduce the LLDP Timer interval to 5, the issue is gone.
The problem with that: As soon as you reboot the switch and/or re-provisioning, that fix is gone, and you need to do it again!
However, there is a much better fix for that issue: Tell the Polycom Equipment what the VoIP VLAN is!
You have two (2) options to do so:
- Use DHCP Options 128 and 144
- Enforce the VLAN on the phone (Via web-interface or config File)
My personal favorite is to use both in combination, just to make sure that everything works as it should!
Here is my default LLDP configuration:
This is the configuration that every Polycom Phone gets deployed via a provisioning server.
I deploy the following to each phone (overwrite):
You can do the same via the Webinterface (Will do the same as the config above):
Set the following in the “CUSTOM DHCP OPTIONS” of your Voice Network:
The entry needs to be uppercase and it have to end with a semicolon! The VLAN needs to be the VLAN Number, not the name!!!
Example, where the Voice VLAN for the Polycom Equipment is 33 (As you can see also above):
VLAN-A is the Voice VLAN (first), VLAN-B (Not in use here) is the Data (second) VLAN.
Here is my Switch Port Configration:
And the Portgroup Configuration:
Tested with Polycom VVX, Polycom Trio 8500/8800, and Polycom Trio Visual+. With Firmware 5.7 and 5.8.