I am a managed switch newby.
We have an HP ProCurve 2620 switch configured by a third party to support a new phone system in our office. We are testing the switch before fully implementing it. The switch has 4 VLANS only one of which is causing problems. 1 VLAN is connected to our router. The other 2 VLANS are connected to phone related equipment. The 4th VLAN hosts the phones and workstations plugged into the phones. I will call this VLAN TROUBLE. Any phone plugged into a TROUBLE port works fine. Any computer plugged directly into a TROUBLE port or into a phone which is plugged into a TROUBLE port can access the Internet without problem, but no device plugged into a TROUBLE port can see any other device plugged into a TROUBLE port.
In other words, a device plugged into TROUBLE can access anything it needs except another device on TROUBLE.
I checked for ACL's (show access-list) and Port Filters (show filters). There are none configured. All devices on TROUBLE are in the same IP subnet.
What could be preventing traffic between the TROUBLE ports.
I have a call into the 3rd party, but am running out of time for an adequate response before the switch must go into action. Any help is appreciated.
Thanks for your input.