dot1p?

From: Jonny English (redkidneybeans@gmail.com)
Date: Tue Nov 20 2007 - 04:14:02 ART

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Hi,

I was reading the DocCD and came upon this command switchport voice vlan dot1p.

This is what the docCD says for sending traffic with a
"dot1pConfigure the phone to use IEEE 802.1p priority tagging for
voice traffic and to use the default native VLAN (VLAN 0) to carry all
traffic. By default, the Cisco IP Phone forwards the voice traffic with an
IEEE 802.1p priority of 5."

So this means that when switchport voice vlan dot1p is uses 802.1p
priority tagging for voice traffic and vlan 0 is used to carry all
other traffic.

but when I tried to configure this I got the following output.

SW(config-if)#sw voice vlan dot1p
% Voice VLAN does not exist. Creating vlan 0
Rack1SW1(config-if)#
00:18:45: %PM-2-VLAN_ADD: Failed to add VLAN 0 - VLAN not found.

My question is how does the switch know about vlan 0?

Thanks,
J

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