XP - Comp Reboot When 2 NICs Are Enabled

Hi Guys,

Do you have such experience? I have 2 NICs installed

NIC1 (SMC) connected to my LAN (Hard Code192.168.*.*)
NIC2 (3Com) connected to my Cable Modem (DHCP Public IP)

It works perfectly fine when i enable either connection. When enable both
NICs
it will reboot after about 2 hours of use.

OS issues is ruled out as i reinstalled a fresh copy and the same issues
arise when i
enabled 2 NICs. Is is more likely a Motherboard or NIC issues? Please
advise.

cheers
Gary

Just a shot in the dark:
Some modems like ASDL, need reboot and dial
again, if the connection is not repsonding. I have
a Liunx firewall, in which there is a provision, to reboot
the machine if there is no activity on the modem for more
than 5 miutes, or if the connection drops totally and
modem gets disconnected, then also it will do the same.

Is there any such option, on that 3Com NIC, which would cause reoobt, if
connection is dropped or no
activity for 2 hrs.?

Sharad

"It's Me" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi Guys,
>
> Do you have such experience? I have 2 NICs installed
>
> NIC1 (SMC) connected to my LAN (Hard Code192.168.*.*)
> NIC2 (3Com) connected to my Cable Modem (DHCP Public IP)
>
> It works perfectly fine when i enable either connection. When enable both
> NICs
> it will reboot after about 2 hours of use.
>
> OS issues is ruled out as i reinstalled a fresh copy and the same issues
> arise when i
> enabled 2 NICs. Is is more likely a Motherboard or NIC issues? Please
> advise.
>
> cheers
> Gary
>
>

I am guessing that it could be the DHCP renewal that is causing it but
before i go running
out to get another NIC and starting changing, i would like the view of
Windows/Networking
ventrans input first.


"sharad" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Just a shot in the dark:
> Some modems like ASDL, need reboot and dial
> again, if the connection is not repsonding. I have
> a Liunx firewall, in which there is a provision, to reboot
> the machine if there is no activity on the modem for more
> than 5 miutes, or if the connection drops totally and
> modem gets disconnected, then also it will do the same.
>
> Is there any such option, on that 3Com NIC, which would cause reoobt, if
> connection is dropped or no
> activity for 2 hrs.?
>
> Sharad
>
> "It's Me" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
> > Hi Guys,
> >
> > Do you have such experience? I have 2 NICs installed
> >
> > NIC1 (SMC) connected to my LAN (Hard Code192.168.*.*)
> > NIC2 (3Com) connected to my Cable Modem (DHCP Public IP)
> >
> > It works perfectly fine when i enable either connection. When enable
both
> > NICs
> > it will reboot after about 2 hours of use.
> >
> > OS issues is ruled out as i reinstalled a fresh copy and the same issues
> > arise when i
> > enabled 2 NICs. Is is more likely a Motherboard or NIC issues? Please
> > advise.
> >
> > cheers
> > Gary
> >
> >
>
>

Does the _machine_ reboot?

It could be that you get a BSOD, and the machine is set to reboot when this
happens. If this is the case, then you should have a message in Event Viewer
telling you what happened. Do you have such message?

Also, have you tried to enable only the other one? I.E, NIC2 is enabled but
not NIC1. The same happens? (I'm trying to find out if it is caused by one
NIC only).

Anyway, the first thing i would do is get the latest driver for both NICs.


Oh, and it is not by any chance caused by the blaster worm?

--
Regards,
Kristofer Gafvert - IIS MVP
Reply to newsgroup only. Remove NEWS if you must reply by email, but please
do not.
www.ilopia.com - FAQ and Tutorials for Windows Server 2003


"It's Me" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi Guys,
>
> Do you have such experience? I have 2 NICs installed
>
> NIC1 (SMC) connected to my LAN (Hard Code192.168.*.*)
> NIC2 (3Com) connected to my Cable Modem (DHCP Public IP)
>
> It works perfectly fine when i enable either connection. When enable both
> NICs
> it will reboot after about 2 hours of use.
>
> OS issues is ruled out as i reinstalled a fresh copy and the same issues
> arise when i
> enabled 2 NICs. Is is more likely a Motherboard or NIC issues? Please
> advise.
>
> cheers
> Gary
>
>

Hi
No, this shouldn't be happening. I was looking to see if there was
response from the second post. When the system reboots it would be nice to
know what is the event logs. Also note that DHCP renewal process is
normally alot longer than every 2 hours. This can be checked by running
IPconfig /all after a reboot to see what the lease duration is. It would
be set for 4 hours if it tries a renew in 2 but I doubt it.

Sounds more like a system crash, as stated in the second post a BUGCHECK
should be reported in the system event logs. Also, look to see if you
have a Memory.dmp file in your Windows directory. Check the create time
and date see if it matches your last reboot from the problem. Most likley
an incompatibility between the 2 drivers. Could try looking to see if the
vendors have any updated drivers for those NIC's to start.

Thank you,

Alan Wood[MSFT]

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