From: Tony H. (aamercado31@yahoo.com)
Date: Fri Nov 01 2002 - 16:01:51 GMT-3
hi
I have the opposite explanation (non ip phone to cisco
switch)...maybe it will give you some insight.
If the ip phone does not send CDP, then you will have
problems in recognizing the voice VLAN:
The workaround is to use DOT1Q trunking with the PC
data frames as Untagged, while the Voice frames are
Tagged with VLAN Headers.
However you may (or may not need to configure the
non-cisco ip phone) For instance in the Avaya, you
probably need to configure the following:
802.1Q = on (default is probably off)
Vlan ID = your voice vlan #
On the Cat:
set trunk to dot1Q
set your vlans
clear all unneeded vlans off the trunk
For example on a CATIOS (ie 35xx/29xx)
interface FastEthernetx/x
switchport trunk encapsulation dot1q
switchport trunk native vlan 200
switchport mode trunk
switchport voice vlan 100
spanning-tree portfast
no cdp enable
This is what will happen:
The PC traffic be treated as native (data) untagged
while the ip phone (in this case Avaya) would tag
voice traffic with the voice VLAN header info and send
it (802.1Q) out the port to the Cat. It should pass
on both tagged and untagged frames. The Cat will see
both and do what it is suppose to do as a trunk port
and segregate voice from data
Hope it helps.
--- Bob Usa <boby2kusa@hotmail.com> wrote:
> It depends on what kind of platform. For
> 3500XL/2900XL devices you will have
> to set up the port/interface fro dot1q trunking and
> set the native vlan for
> the data vlan. Non-Cisco IP phone such as Avaya are
> configure-able to send
> vlan ID in their packet. For set command switches
> such as Cat4K, Cat6Ks all
> you have to do is set the regular vlan for data and
> set the auxiliary vlan for
> the voice vlan. This is done so you can plug-in a
> PC to the IP Phones data
> jack. I have been told that Avaya advice not to use
> auxiliary vlan for now
> since they have not tested but I find it to work
> just fine. But you can also
> trunk the port using dot1q and making the data vlan
> the Native vlan. This
> helps?
>
>
> ----- Original Message -----
> From: tlarus@cox.net
> Sent: Thursday, October 31, 2002 9:17 AM
> To: ccielab@groupstudy.com
> Subject: Problem relating to Interoperability of
> Cisco IP phones with
> non-Cisco switches
>
> How do you set the operational VLAN and admin VLAN
> on a Cisco IP Phone if the
> switch you are connecting to network with does not
> support CDP? Normally a
> Cisco IP phone learns about what VLANs it is using
> through CDP communication
> with a Cisco switch.
>
> I wonder if you can have the CallManager tell the IP
> Phone what VLANs it is
> using. I have not found anything indiacting that
> this can be done. Even better
> would be being able to set the VLANs on the phone
> itself.
>
> Thanks in advance,
> Tom LarusGet more from the Web. FREE MSN Explorer
> download :
> http://explorer.msn.com
This archive was generated by hypermail 2.1.4 : Tue Dec 03 2002 - 07:22:51 GMT-3