Cisco IP Phone with LLDP-MED on Nortel Switch

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Mar 6th, 2008
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I'm trying to get some insights into the capabilities of running LLDP-MED between a Cisco phone and a Nortel switch. I know 8.3.3 firmware will support LLDP-MED but don't know of any actual deployments.

The most important aspect is whether the Cisco phone will dynamically land on a Voice VLAN on the Nortel Switch (similar to how CDP works).

Does anybody have any experience with this?

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gogasca Thu, 03/06/2008 - 12:33
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Which phone model and Nortel switch?

jrhofman Thu, 03/06/2008 - 12:50
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This is an RFP response. The phones we will likely propose will be 7942's-7962's.

The Nortel closet switches are 5520's. They do not indicate in the RFP if these switches support LLDP-MED but they do state PoE and QoS support.

I'm going to go research the 5520 right now.


saquib.mkhan Tue, 04/15/2008 - 15:52
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Did you ever get the Cisco IP phones working with the Nortel 5520's. Any Configuration is greatly appreciated.

jrhofman Tue, 04/15/2008 - 18:30
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Nope, I got no feedback from Cisco or anyone else. We decided not to respond to the RFP.

jguay Wed, 01/05/2011 - 08:37
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This is an old post but since the subject is rare I thought I'd answer it.

We've had success getting Cisco IP Phones work on a stack of Nortel/Avaya ERS5520 software version 6.2 using LLDP-MED.  The Cisco phones dynamically get their voice vlan id through LLDP-MED and do their DHCP request on the correct vlan.


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