On Mon, 28 Jul 2003 13:47:25 +0800, "LiMeiYong" <jobsli@xxxxxxxx> wrote in message <87969271865366.03228@xxxxxxxxxxxxxxxxxxxx>: > > I use a PC with 3 NICs. > Their configurations are: > eth0: 152.201.3.179 mask 255.255.0.0 > eth1: 152.20.3.181 mask 255.255.0.0 ..you route traffic for, uh...: ipcalc -bnmp 152.201.3.179/16 NETMASK=255.255.0.0 PREFIX=16 BROADCAST=152.201.255.255 NETWORK=152.201.0.0 ...around 130 thousand boxes on one pc??? Not at all bad! ;-) ..or, are these netmasks too wide? Searching 130 000 takes a _while_, even if everything else works ok. Depending on your network layout, reconsider your sub net strategy, chances are _fat_ a few thousand subnets with an handful of hosts in each, will prove faster. Good Luck. ;-) -- ..med vennlig hilsen = with Kind Regards from Arnt... ;-) ...with a number of polar bear hunters in his ancestry... Scenarios always come in sets of three: best case, worst case, and just in case.