Re: Higher level question about flow label

[Michael Thomas]

Brian E Carpenter writes:
 > The point is that when a packet crosses an administrative domain boundary,
 > the downstream ISP typically wants to reclassify the packet all over again, 
 > i.e. does not accept the incoming DSCP as definitive. This was a very
 > clearly stated ISP requirement at the start of diffserv and is fundamental
 > in the diffserv architecture.

    Right... I must be missing something. You copy the inner DSCP
    to the tunneled packet header, it traverses the network just like
    normal with whatever re-writing rules apply at the administrative
    edges, and once the packet is decapsulated, you copy the outer
    DSCP back into the inner and goes along its merry way.

    What am I missing?

         Mike
--------------------------------------------------------------------
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]
--------------------------------------------------------------------