Hello everyone, I'm in the process of updating my IPv6 Primer, per the recommendations of the helpful people who sent me comments back in February, and I'm having some trouble finding basic information about QoS in IPv6. My understanding so far is that IPv6 has this opaque flow-label field in packet headers that should be used to implement QoS, but so far there has been no consensus as to how it should be used effectively. Appendix A of RFC 2460 states that sensitive flows should be allocated a flow label in a pseudorandom and uniform fashion, but beyond that, no information is given on how labelling could provide varying levels of service. I gather that the original intent of this field is to allow protocols like RSVP to distinguish between flows easily, to enable clients to reserve levels of service without having to use IPv4 tricks of looking into the transport and session headers. There are several expired drafts (draft-schmid-rsvp-fl-01, draft-berson-rsvp-ipv6-fl-00) that attempt to specify RSVP filters based on the flow label field, but they all seem to have expired. There was some discussion at the March meeting (which I wasn't able to attend) about use of the flow label, but it seems from the minutes that no conclusions were reached, and no real progress was made. Am I missing something, or do I have an accurate idea of where QoS in IPv6 is at right now? Unless somebody corrects me, the discussion of QoS in my primer will essentially be a paraphrasing of this email. -Nathan -- +-------------------+---------------------+------------------------+ | Nathan Lutchansky | [EMAIL PROTECTED] | Lithium Technologies | +------------------------------------------------------------------+ | I dread success. To have succeeded is to have finished one's | | business on earth... I like a state of continual becoming, | | with a goal in front and not behind. - George Bernard Shaw | +------------------------------------------------------------------+ -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
