tagged frames

carl_townshend · ‎12-04-2007

Hi all, when we talk about a tagged frame, does this mean either 802.1p tagging or 802.1q tagging ? and will the ethertype be the same for both of these ?

hdt · ‎12-04-2007

Hi Carl,

Please take a look at the following link:

http://en.wikipedia.org/wiki/IEEE_802.1Q

I think this will answer your question about the relation between 802.1p and 802.1q and the ethertype which is used.

regards,

Henk

bvsnarayana03 · ‎12-04-2007

it is the 802.1q frame. Ethertype value & 802.1p are carried in the 802.1q frame.

Refer this link for further reference:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1834/products_feature_guide09186a008008019c.html

802.1p is carried in the user priority field of .1q tag frame.

pls rate if helped.

carl_townshend · ‎12-05-2007

so is it possible to prioritize untagged frames then ?

Martin Schoenbacher · ‎12-05-2007

no.

carl_townshend · ‎12-05-2007

can anyone clarify this as im sure I have seen it where you can prioritize untagged frames