I found out how to limit all traffic on a give nic: [root at mirrors html]# tc qdisc add dev eth1 handle 1:0 root dsmark indices 1 default_index 0 [root at mirrors html]# tc qdisc add dev eth1 handle 2:0 parent 1:0 tbf burst 2048 limit 2048 mtu 1514 rate 3200bps But I do not know how to persist this. Trying to understand: http://www.redhat.com/mirrors/LDP/HOWTO/Traffic-Control-tcng-HTB-HOWTO/examples. html And the following files: /etc/iproute2 /etc/iproute2/ematch_map /etc/iproute2/rt_dsfield /etc/iproute2/rt_protos /etc/iproute2/rt_realms /etc/iproute2/rt_scopes /etc/iproute2/rt_tables /etc/sysconfig/cbq /etc/sysconfig/cbq/avpkt /etc/sysconfig/cbq/cbq-0000.example I am lost. Any suggestions? -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is copyright PD Inc, subject to license 20080407P00.