[Bridge] Bridge limitations

[Rinse Kloek]

We use a RedHat 7.3 machine as bridge on a P3 1.8 Ghz with 2 64 bits Gigabit interfaces. On the machine we have a lot of iptables rules like :             all  --  213.134.x.0        0.0.0.0/0             all  --  0.0.0.0/0            213.134.x.0 TOS    all  --  213.134.x.4        0.0.0.0/0          TOS set 0x08             all  --  0.0.0.0/0            213.134.x.4 Currently in the peak hours we have about 40 Megabit traffic. Also in this peak hours we have a CPU load of about 70%. What is the main reason of this CPU load, is it the high traffic or the iptables rules on the machine. And if the iptables rules are the reaseon of the high CPU load, does TOS mangling use much CPU?   regards Rinse