Ali badilli wrote: > Hi everybody, > > Does anybody know any tool, we can mark packets' ToS > field?. I would like to mark packets in ingress router > and classify them in core router based on their ToS > field (DSCP in Diffserv). > > Thanks in advance > > > __________________________________________________ > Do You Yahoo!? > Yahoo! Sports - live college hoops coverage > http://sports.yahoo.com/ > _______________________________________________ > LARTC mailing list / LARTC@mailman.ds9a.nl > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ > > Have you tried iptables: (see man-page for iptables) iptables -A OUTPUT -t mangle -p tcp --sport telnet \ -j TOS --set-tos Minimize-Delay Or you can do it with tc: (setting TOS according to destination port) TC=tc EGDEV="dev eth0" # # ############################################################ ######################## Egress side ######################## # attach a dsmarker # $TC qdisc add $EGDEV handle 1:0 root dsmark indices 64 set_tc_index # # values of the DSCP to change depending on the class # #becomes EF $TC class change $EGDEV classid 1:1 dsmark mask 0x3 \ value 0xb8 #becomes AF11 $TC class change $EGDEV classid 1:2 dsmark mask 0x3 \ value 0x28 #becomes AF21 $TC class change $EGDEV classid 1:3 dsmark mask 0x3 \ value 0x48 # # # The class mapping # $TC filter add $EGDEV parent 1:0 protocol ip prio 4 u32 \ match ip dport 5001 0xffff classid 1:1 $TC filter add $EGDEV parent 1:0 protocol ip prio 4 u32 \ match ip dport 5002 0xffff classid 1:2 $TC filter add $EGDEV parent 1:0 protocol ip prio 4 u32 \ match ip dport 5003 0xffff classid 1:3 # echo "---- qdisc parameters Egress ----------" $TC qdisc ls $EGDEV echo "---- Class parameters Egress ----------" $TC class ls $EGDEV echo "---- filter parameters Egress ----------" $TC filter ls $EGDEV parent 1:0 Just for testing, ping and mgen can set TOS field as well. Regards Viktor
