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If the port is in access-mode (not 802.1q trunk), then<br />
if port is assigned to vlan (switchport access vlan N), then frame will have changed 802.1Q tag to this vlan<br />
if port is not assigned to vlan, then the frame will have stripped 802.1q tag<br />
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And in fact, the above applies to any ethernet frame recived on such port.<br />

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If the port is in access-mode (not 802.1q trunk), then
if port is assigned to vlan (switchport access vlan N), then frame will have changed 802.1Q tag to this vlan
if port is not assigned to vlan, then the frame will have stripped 802.1q tag

And in fact, the above applies to any ethernet frame recived on such port.


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Does it have to be trunked for the 802.1p tag to be honored?
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Does it have to be trunked for the 802.1p tag to be honored?

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I need to know what Cisco switches will do with a non-trunked port recieving a 802.1p tag? Will the 4 extra bytes (802.1P) cause the frame to be rejected or will the switch read the 802.1P tag (asumming its a trusted port)? What switches will handle it and which will drop it? 
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I need to know what Cisco switches will do with a non-trunked port recieving a 802.1p tag? Will the 4 extra bytes (802.1P) cause the frame to be rejected or will the switch read the 802.1P tag (asumming its a trusted port)? What switches will handle it and which will drop it? 

Switches handling 802.1p without trunking

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.