You can try with IMQ, which probably is not wanted for a production server. You can also mark the pachets which have some DSCP bits, then use u32 with the mark match (Probably Catalin's implementation), i think it is even in some latest 2.6 kernels, also don't forget to use a new iproute2 :) On Wed, 16 Feb 2005 11:12:46 +0200 (EET), Catalin(ux aka Dino) BOIE <util@xxxxxxxxxxxxxxx> wrote: > On Tue, 15 Feb 2005, Dan Cox wrote: > > > I'm successfully using HTB + GRED to shape traffic based on the DSCP field. I > > would like to strip the DSCP and possibly replace it with normal ToS bits on > > egress traffic leaving my network. Leaving DSCP set is pointless, and could > > potentially cause problems with some ISPs that use DSCP internally I suppose. > > Setting ToS bits would seem ideal as most networks still honor it to varying > > degrees. > > > > The problem is I can see no way of doing this. Since DSCP is needed in the > > qdiscs for shaping, it can't be mangled with iptables. According to the packet > > flow diagram, there doesn't appear to be any other opportunity to mangle the > > packets in this manor. Will I need to insert another router in the chain just > > to do this? :( > > You can clone the GRED qdisc code and modify it to overwrite the DSCP > bits. > > > > > -- > > Dan- > > _______________________________________________ > > LARTC mailing list / LARTC@xxxxxxxxxxxxxxx > > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ > > > > --- > Catalin(ux aka Dino) BOIE > catab at deuroconsult.ro > http://kernel.umbrella.ro/ > _______________________________________________ > LARTC mailing list / LARTC@xxxxxxxxxxxxxxx > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ > -- Bla bla _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
