In my network I have VoIP (VLAN-ID 30) phones and desktop (VLAN-ID 20) computers on separate VLANs. I would like to run a single cable to my desk from the switch that first connects to my VoIP phone, then use the 'output' network port on the VoIP phone to connect a CAT6 cable to my computer.
I am not sure if I am supposed to run VLAN30 over VLAN20, or opposite that. I have tried both but can't get it to work, even when modifying the settings in my phone.
In case it matters, my switch is a Juniper 3900 series with Layer 3 routing capability and my phone has an option to assign VLANs.