My computers installed w/ 3com 3C905B-TX network card and connected to LAN.
They received millions of packets within a few mins. after connected. If I
remove the network card and enable the onboard network card (Broadcom
NetXtreme 57xx Gigabit Controller), then it is OK. Why?
Much better explanation of what you're wondering about. I'm not a network
person so can only guess. One reason might be the new mac address for the
card. Depending on how the network is configured, that would be broadcast
to establish the system on the network. But if these are both new to the
setup would expect those communications to happen with each of them.
Also, a system can have more than one NIC installed and active. Examples:
One connected to the internet and one connected to a LAN -or- one card each
for two workgroups. Changing the NIC should theoretically create a second
connection under Network Connections. Perhaps some activity to get shares
propagated to the system. And again, If the firewall is active on one
connection and not the other, that could explain the difference in traffic.
Is there supplemental software involved with either card? Is that software
configured to check for driver updates? Or search for new networks to
connect to and maintain profiles?
Unless some network minded person comes along here, you may want to repost
this question in the windowsxp.networking_web or windowsxp.hardware
newsgroup.
