From: Tom Nooning (t.nooning@insightbb.com)
Date: Tue Jun 07 2005 - 02:03:12 GMT-3
Long, it's definitely possible to configure dot1q trunking between Cisco and
Foundry. But I think what your asking is if you can plug a Cisco IP phone
into a Foundry switch and have the Foundry switch seperate the Data and
Voice VLANs. This is not possible, as I believe the phone picks up on which
VLANs to use via CDP. Now you might want to check Foundry support for CoS,
as the phone should be generating voice traffic with a CoS of 5 and traffic
from its PC port with a CoS of 0. Then do some nifty QoS or whatever it is
called in Foundry-land.
Of course I could be way off base and completely and utterly wrong.
-Tom
----- Original Message -----
From: "Long Kwok" <lkwok@ccieunix.com>
To: <ccielab@groupstudy.com>
Sent: Tuesday, June 07, 2005 12:16 AM
Subject: Foundry and Cisco dot1q trunking with Phones
> Hi,
>
> I was under the impression that dot1q trunking is dot1q trunking . Have
> a integration situation where core access layer devices that uplink to
> core of the network are foundry layer 2/3 switches. Now some cisco 3550
> switches need to hang off of these foundry switches in each of the idf
> closets. Cisco phones will be plugging into the foundry switches and
> cisco switches , cisco supports the aux/voice vlan feature so that
> devices using the Ethernet port on the back of the cisco IP phones can
> be on a different vlan/ip subnet than the phone / voice itself. When
> setting up foundry trunking via 802.1q into the cisco network , there
> seems to be now way to match the voice and data vlans , so the only way
> to put phones on the back of the foundry switch is with pc and phone on
> same vlan , has anyone else played with foundry and cisco 802.1q
> trunking
>
>
>
> TIA , Long
>
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