normal the device uses for nat and pat function,cpu load is about 20 % with 40M traffic,sometime ago, i discovered the internet speed suddenly down,then i used ping and trace tools.discovered the pix make a large delay.cpu usage was 98 percent.i have...

if use rip ,eigrp , ospf in an environment,how to decision the route and set up the route table.prefer the prefix > disntance > cost or prefer distance > cost (don't uses prefix setting up the route table )