Hello, I have a problem like this. Can somebody tell me how I can use 'ip route' to do DSCP field based routing. I now can only use the TOS fields, but I want to use the DS fields too. How Come? Regards Rinse ----- Original Message ----- From: "Simone Leggio" <simone.leggio@xxxxxxxxxxxxxx> To: "Kim Jensen" <kimj@xxxxxxx> Cc: <netfilter@xxxxxxxxxxxxxxxxxxx> Sent: Thursday, March 27, 2003 8:32 AM Subject: Re: IP TOS based routing > Kim Jensen wrote: > > On Tuesday 25 March 2003 09:51, Simone Leggio wrote: > > >>I'd like to know whether it is possible, and if so how, with traffic > >>control to set filters so that packets with TOS 46 are sent to host B > >>via eth0 and packets with TOS 26 via eth1. > > > > > Hi Simone, > > > > Try to use the mangle table to mark your packets which match a > specific TOS, > > and then add a second routing table with the alternative default > connection. > > That should work. You can find more info on: > > > > http://linux-ip.net/html/adv-multi-internet.html > > http://www.ssi.bg/~ja/nano.txt > > > > /Kim > > Hi Kim, > > thanks for the answer. > At the moment I have a test network where I send traffic from host A to > host B generating it with a proper traffic generator (for example MGEN), > which allows also to set the DS (or IP TOS) field. > Does iptables understand the value set before with the traffic generator > or I have to set the field with the mangle table? > What I was thinking to type to discriminate the output interface was: > > iptables -A FORWARD -p tcp -m tos --tos TOS -o INTERFACE -j ACCEPT > > With TOS equal to the value set by the traffic generator. Would it work? > > Simone. > > > > >
