Following Dylan's comments: Reading the request, I thought that the reference to 802.1p was as an extra thing,
might even have 802.1p enqueueing and scheduling enabled on their switches
with QoS by implication being something else, most probably DSCP. However, maybe the intent *is* to enable 1.p at the IX. Our (TCL's) view is as follows: 1. We don't care what the incoming 802.1p bits are. By the time they reach us, it's already too late to do anything. 2. The IX is a layer three interconnect. So, we don't care about the enclosing Ethernet frame, only the crunchy goodness of the IP pocket within. 3. We do not know, nor we we care to know, about the nature of the IX network beyond the NNI itself. What happens within is entirely up to the IX operator. Because of that: 1. We completely ignore the 802.1p bits on incoming frames. 2. We set the 802.1p bits on all outgoing frames to zero. Where we do QoS, we base it entirely on the Diffserv bits in the IP header. We would assume that the IX operator, if it cares about 802.1p, will likewise set the bits based on Diffserv. I suppose we might contemplate setting the outgoing bits for the benefit of the IX, but that would of course require some agreement on the mapping. -- Michael Newbery IP Architect TelstraClear Limited TelstraClear. Simple Solutions. Everyday Residential 0508 888 800 Business 0508 249 999 Enterprise & Government 0508 400 300 This email contains information which may be confidential and subject to copyright. If you are not the intended recipient you must not use, distribute or copy this email or attachments. If you have received this email in error please notify us immediately by return email and delete this email and any attachments. TelstraClear Limited accepts no responsibility for changes made to this email or to any attachments after transmission from TelstraClear Limited. It is your responsibility to check this email and any attachments for viruses. Emails are not secure. They can be intercepted, amended, lost or destroyed and may contain viruses. Anyone who communicates with TelstraClear Limited by email is taken to accept these risks.