Hi, If you use the 'u32' classifier to select your traffic you can use any field of the IP/TCP header to filter the traffic, including the DS (TOS) field. The Linux Advanced Router HOWTO has an example of this (search for 'match ip tos 0x10'). You can also use the 'fw' classifier and use iptables to filter the traffic. In this case you have to use the '--tos' flag to select the bit pattern of the TOS field. regards, Claudio L. Salvadori David Wilson wrote: > > Hi guys, > > No one responded to this ? I take it that no one knows any type of answer > for it ? :-) > > Regards > David Wilson > Technical Support Centre > The S.A Internet > 0860 100 869 > www.sai.co.za <http://www.sai.co.za> > > -----Original Message----- > From: lartc-admin@xxxxxxxxxxxxxxx [mailto:lartc-admin@xxxxxxxxxxxxxxx]On > Behalf Of David Wilson > Sent: 29 October 2001 09:59 > To: lartc@xxxxxxxxxxxxxxx > Cc: dave@xxxxxxxxxxxxxx > Subject: [LARTC] tc bw shaping filters/classes based on DS (precedence > bit) and destination IP address? > > Hi, all. How are you ? > > Well done on all of your excellent work, it's fantastic ! > > Is it possible with tc to create traffic shaping rules based on destination > address and precedence (DS) field/bit ? > > The reason I ask is because my upstream bandwidth provider marks all our > international incoming bandwidth with a 2 or 3 in the precendence (DS) bit > field to discriminate between incoming local bandwidth (.za) and > international bandwidth. I need to then create traffic shaping rules > to limit incoming international and local bandwidth separately that is > destined for certain IP addresses on my network. > Take this for example, I have 2 PC's on my network, I want to limit > PC#1(10.0.0.1) to 16K international (DS=2 or 3) and 64K local (DS=0) > incoming bandwidth, > PC#2(10.0.0.2) I want to be limited to 32K International (DS=2 or 3) and > 128K incoming local (DS=0) bandwidth. The only way for me to discriminate > between local and international incoming bandwidth is the precence bit field > that has been marked by my upstream ISP. > Can this be done by using tc features ? > If possible I'd like to one day build the feature into Squid's delay > pools so that the delay pools can also pick up different types of bandwidth > (local/international). Am I asking too much ? ;-) Anyways the Squid issue > I'll get onto later Maybe. > I've read all the docs I can find about tc however nothing talks about > applying traffic shaping rules to traffic who's precedence bit field has > been marked, I can only find information about marking traffic, maybe I'm > missing something ? > > Thanks any guidance would be greatly appreciated. > > Regards > David Wilson > The S.A Internet > http://www.sai.co.za > LinuxBox S.A > http://www.linuxbox.co.za > > _______________________________________________ > LARTC mailing list / LARTC@xxxxxxxxxxxxxxx > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: > http://ds9a.nl/2.4Routing/ > > _______________________________________________ > LARTC mailing list / LARTC@xxxxxxxxxxxxxxx > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/
