Polycomm IP670 - VOIP VLAN - I can ping the phone from data VLAN - no router between 2 VLANs
Posted on 2012-03-16
This might be a challenge
I have a PC and phone on 1 cable - 2 vlans
PC connected to Phone. - 1 cable back to cisco switches 2960's layer2
users were stealing phones from meeting rooms :)
So I thought I would put a IP monitor on the phones from my PC?
There is no route between the 2 VLANS - So how was I to do this.?
As a rough chance i thought id put a secondary IP on the PC interface I use. This secondary IP being on the same subnet as the Phone VLAN. - to my surprise it worked - I can ping the phones - any phone not just my own.
I had a very experienced Cisco engineer (who setup network) - in - he looked at what id done and couldnt explain how I was able to ping the phones with what I had done - 2 vlans - no route between them. - Im hoping someone here will know the polycom ip670 phones and will explain that they somehow route or bridge the 2 vlans - or other explanation - anyone thanks