What can cause packets to bcome fragmented. We had a 24 port 3-Com switch that, when monitored showed more then half of the packets were fragmented ( even if smaller then the MTU) The ISP admin swears its the router, but as soon as we swapped out the switch for a newer one, the fragmentation stopped. (this is one of their switches, not ours) the network goes like this Outside>>>Cisco 1700 router>>>24 port switch>>>port 7,8 or 14>>>Linksys router>>>linksys 8 port switch>>office pcs >>>ports other then 7,8, and 14 all go to a patch pana