cobusve
New Member
I am having a particularly annoying problem with a HUAWEI E220 connected to a Vigor2910G DrayTek.
The router seems to be working 100%, but from certain computers the HUAWEI 3G modem crashes (the light goes off, and starts flashing again after a couple of seconds, after which activity on the network will cause it to reconnect) when doing specific things.
It happens more often from certain computers than others, but it seems to be a general problem. There are a couple of websites that give repeatable behaviour, our internal Time Tracking website for consultants being the most annoying one, but the fairly standard www.facebook.com works just as well to kill it.
We also have some trouble with POP e-mail from time to time but this seems to be intermittent.
The fascinating thing is that hitting the same website/mail server from a different machine on the network works 100%.
We have tried a number of things ranging from swappign around IP's and rebooting machines and modems to setting the MTU and TCP Windows Size on Windows XP and recording network traces using WireShark.
The only conclusion we have been able to reach is that the machines in question are not doing anything out of the ordinary.
We do seem to get the problem mostly on machines that are part of an office domain for which the DC is not on our local network, dont know if some Netbios packet or something is causing the router to crash, but I do need a way to fix this.
Anybody else see something similar?
The router seems to be working 100%, but from certain computers the HUAWEI 3G modem crashes (the light goes off, and starts flashing again after a couple of seconds, after which activity on the network will cause it to reconnect) when doing specific things.
It happens more often from certain computers than others, but it seems to be a general problem. There are a couple of websites that give repeatable behaviour, our internal Time Tracking website for consultants being the most annoying one, but the fairly standard www.facebook.com works just as well to kill it.
We also have some trouble with POP e-mail from time to time but this seems to be intermittent.
The fascinating thing is that hitting the same website/mail server from a different machine on the network works 100%.
We have tried a number of things ranging from swappign around IP's and rebooting machines and modems to setting the MTU and TCP Windows Size on Windows XP and recording network traces using WireShark.
The only conclusion we have been able to reach is that the machines in question are not doing anything out of the ordinary.
We do seem to get the problem mostly on machines that are part of an office domain for which the DC is not on our local network, dont know if some Netbios packet or something is causing the router to crash, but I do need a way to fix this.
Anybody else see something similar?
