VoIP VLAN over bridge

75 pts.
Tags:
Cisco
IP phones
Networking
Switches
Switching
VLAN
VoIP
I am extending a subnet over T1 bridge using Adtran 3205 routers. The host site is connected via Cisco 2801 router with a switch card to th e HQ site. The remote site is connected to the host site by the bridged Adtran's. The switch at the remote site is a Cisco C2960. I connected a PC to the ethernet port on the remote side and it worked. I put in the switch and it put down the port. I disabled Spanning tree and the port came up, however still no connectivity thru the switch. I changed out the switch for a dell powerconnect 2624 and then PC connectivity was established, however, my Cisco IP phones will not register. Data is VLAN1, voice is VLAN 10. The Adtran routers are set to trunking mode, as is the switch port on the host site router. I am stuck, the bridged routers should pass all traffic regardless of protocol (802.3q) and documentation for the dell switch says that is will ignore the priority packets and just pass them along untouched. Any suggestions. This site is supposed to come online Monday, tomorrow and I can't get the phones to work!
ASKED: September 30, 2007  8:23 PM
UPDATED: October 3, 2007  4:03 PM

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  • David Davis
    Hi there, A lot going on in this scenario so please forgive all the questions.... When you connected the 2960 to the bridge, did you get a link light? You would have to use a crossover cable to connect switch to switch. Perhaps the Dell has an autocrossover port or an uplink port that might have crossed it for you so it worked when you connected it. Do you have the PC's connected to the ethernet port on the VoIP phones? If it is being piggy-backed then the ethernet port on the switch that it is connected to has to be a trunk port. Yes, I would agree that the 802.3q traffic shoulnd't make a difference in it working or not. What if you just connect a PC only to the switch and hardcode the VOICE VLAN 10 number on that port, can you ping the call manager? I think if we can get a some of these questions answered and try some of these tests, we can solve this one :) Thanks, David Davis, CCIE Personal Website: HappyRouter.com - home of Cisco how-to articles & videos David Recommends: HappyRouter Cisco CCNA & CCNP Video Training Series Cirro - Quote Telecom Internet, Voice, and Data T1 circuits from an unbiased source
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