03-28-2007 10:45 AM - edited 03-14-2019 08:44 PM
hi guys,
I know that when configuring a switch port to support both voice and data vlan, we add the following commands:
switchport access vlan x
switchport voice vlan y
switchport mode access
my question simply is this: why does this port considered and configured as access port not trunk, since from first look it seems it has to be trunk due to handling two vlans .. so why is it configured as access port?
03-28-2007 02:32 PM
It is configured as an access point because it does not have to trunk down to the Cisco IP phone for the phone to know which Vlan to send voice packets out on
When the phone first boots up you will notice that it says configuring Vlan. What it is really doing is telling the switch that it is a phone through CDP. The phone will then mark all packets on the voice vlan automaticly.
HTH
Please rate helpfull post.
03-28-2007 02:52 PM
Hi UC,
Have a look at the following;
Understanding Voice VLAN
From this doc;http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3560/12220se/3560scg/swvoip.htm#wp1033848
Have a look at this great description by Narayan, he explains this in a most consise and easy to understand manner;
Hope this helps!
Rob
EDIT: Jason, you are too fast for my hapless typing abilities :)
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