Nortel Networks Nortel i2004 Ip phone and it external computer port

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Nortel i2004 Ip phone and it external computer port joe.gauthier 05-18-05
Posted by on May 18, 2005, 10:38 am
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Does any one know if its possible/how to set the Vlan and untag the
computer port of a i2004 w phone. The issue is that alot of network
card can't handle the Tagged frames. New NICs (dell laptops tested)
work fine but if you have one that is more then one year old chances
are the computer will not work at all. Any work arounds would be
usefull too. I'm looking at using a managed switch to strip the tag
but that seems like a huge waste.



Posted by Michael Roberts on May 19, 2005, 11:02 am
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joe.gauthier@gmail.com wrote:
> Does any one know if its possible/how to set the Vlan and untag the
> computer port of a i2004 w phone. The issue is that alot of network
> card can't handle the Tagged frames. New NICs (dell laptops tested)
> work fine but if you have one that is more then one year old chances
> are the computer will not work at all. Any work arounds would be
> usefull too. I'm looking at using a managed switch to strip the tag
> but that seems like a huge waste.
>

You ask a very very important question. I have been asking how this
works for a number of months to my Nortel support crew. The only thing
that has helped so far was a pre-sales engineering document that was
titled 'i2002/i2004 DHCP w/ Auto VLAN discovery'. This document
explained a lot. My sales team promises there will be more information
to come, and I trust they will deliver.

Basically the premise is the switch port will remain tagged, but set to
not discard untagged frames. The phone will learn the appropriate VLAN
to tag its frames with through DHCP. The workstation will transmit
untagged frames that will be forwarded into the default VLAN (or PVID)
on the upstream switch port. I am still a little unclear on how the
workstation will receive frames from the switch....

Now mix in 802.1x and things get even more complicated. I can not
stress enough how important this is to enterprise customers who are
looking into VoIP. I want to see diagrams and switch configurations,
then I want to build it myself, because I am still seeing a bunch of
smoke and mirrors. And to a network engineer, that makes me nervous.

-mike


Posted by Onion Knight on May 19, 2005, 12:12 pm
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> joe.gauthier@gmail.com wrote:
>> Does any one know if its possible/how to set the Vlan and untag the
>> computer port of a i2004 w phone. The issue is that alot of network
>> card can't handle the Tagged frames. New NICs (dell laptops tested)
>> work fine but if you have one that is more then one year old chances
>> are the computer will not work at all. Any work arounds would be
>> usefull too. I'm looking at using a managed switch to strip the tag
>> but that seems like a huge waste.
>>
>
> You ask a very very important question. I have been asking how this works
> for a number of months to my Nortel support crew. The only thing that has
> helped so far was a pre-sales engineering document that was titled
> 'i2002/i2004 DHCP w/ Auto VLAN discovery'. This document explained a lot.

<snip>

Is there a soft copy of that document available somewhere on Nortel's
site? Anywhere?

--
OK




Posted by Michael Roberts on May 19, 2005, 12:35 pm
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Onion Knight wrote:
>
>>joe.gauthier@gmail.com wrote:
>>
>>>Does any one know if its possible/how to set the Vlan and untag the
>>>computer port of a i2004 w phone. The issue is that alot of network
>>>card can't handle the Tagged frames. New NICs (dell laptops tested)
>>>work fine but if you have one that is more then one year old chances
>>>are the computer will not work at all. Any work arounds would be
>>>usefull too. I'm looking at using a managed switch to strip the tag
>>>but that seems like a huge waste.
>>>
>>
>>You ask a very very important question. I have been asking how this works
>>for a number of months to my Nortel support crew. The only thing that has
>>helped so far was a pre-sales engineering document that was titled
>>'i2002/i2004 DHCP w/ Auto VLAN discovery'. This document explained a lot.
>
>
> <snip>
>
> Is there a soft copy of that document available somewhere on Nortel's
> site? Anywhere?
>
I only have a hard copy. Sorry. I bet if you approached your Nortel
SE, they could grab it easily. Next time I talk with mine, I will see
if I can get a soft copy of it.

-mike


Posted by Bruce Uttley on May 19, 2005, 5:52 pm
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>
> Is there a soft copy of that document available somewhere on Nortel's
>site? Anywhere?
>
>--
>OK
>

A network search finds "Nortel Networks/ Technical Tip:/ i2002/i2004
DHCP w/ Auto VLAN Discovery" dated January 2004 at:

http://nortelnetworks.com/corporate/global/emea/france/techenews/
collateral/i2004_dhcp_process.pdf



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