restrict PC traffic speed on the lan

I should have been clearer: I mean to restrict the traffic speed of 172.16.1.15 to the internet...

Yes, that's right. By the time the traffic has come down the wire and arrived at your router, it's already used your bandwidth up. There are certain ways you can convince an endpoint that it can't have the bandwidth it's asking for, but I'm not sure if these are implemented by Cisco routers. Someone will be along soon to enlighten us :-)

Traffic leaving the router can be limited with a QoS policy. It may be difficult to restrict the traffic unless you limit traffic leaving interface FastEternet0/0 towards the host 172.16.1.15. Limiting outbound traffic is possible but may not yield much of a result when this host is downloding from the Internet. In that case, traffic should be limited from the Internet when it is leaving the router to go to 172.16.1.15. This does not have any limitation on the intra-network traffic between this host and other host computers on the inside of the network. This propsed solution contains what would be entered into configuration mode in the command line interface. I cannot help you use the SDM and will encourage you to learn how to manage your router from the command line.

ip access-list extended host15 remark Traffic sent to 172.16.1.15 permit ip any host 172.16.1.15 ! class-map match-all class15 description Access-list of traffic to 172.16.1.15 match access-group name host15 ! policy-map bandwidthlimit class class15 shape peak 50000 ! interface FastEthernet0/0 service-policy output bandwidthlimit

----- Scott Perry Indianapolis, IN

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Scott thanks for your response and sorry for my delay in following up. The config you gave did throttle the 172.16.1.15 machine's internet speed without affecting any other pc on the lan. Your commands worked great so thanks very much for your help.