I should be able to check/set the IRQ's and such automatically to prevent conflicts as they are microchannel but I'll recheck. One thing I did think of is that maybe they're both holding the same MAC address or adapter address, which is something I need to check. As far as the machine's bios/setup and NT care they are both working fine without a conflict. -> -----Original Message----- -> From: owner-classiccmp(a)classiccmp.org -> [mailto:owner-classiccmp@classiccmp.org]On Behalf Of Roger Merchberger -> Sent: Wednesday, August 08, 2001 5:47 PM -> To: classiccmp(a)classiccmp.org -> Subject: Re: Two NICs in one machine - how? -> As they're both 3Com nic's my guess would be is that they're -> trying to grab -> the same IRQ (and/or DMA if they use DMA) and there's IRQ conficts with -> both of them in the machine. -> -> The only thing I can think of is if you have some DOS-based 3Com -> NIC setup -> software, boot the box with a dos boot disk with 1 of the NICs in the -> machine, and configure the card to use a different IRQ (like, -> say, IRQ 5 if -> you only have one printer port) then shutdown, insert the 2nd -> card & see if -> it boots OK. -> -> Dunno if this'll help, but I hope it does! -> Roger "Merch" Merchberger -> -- -> Roger "Merch" Merchberger --- sysadmin, Iceberg Computers -> Recycling is good, right??? Ok, so I'll recycle an old .sig. -> -> If at first you don't succeed, nuclear warhead -> disarmament should *not* be your first career choice. ->

Microchannel cards tend not to have jumpers for most things though. Peace... Sridhar On Thu, 9 Aug 2001, Sean 'Captain Napalm' Conner wrote:

That's a thought, I'll drop my DCA or other in it...or wait until I get my two Olicom 10/100's in early next week. -----Original Message----- From: owner-classiccmp(a)classiccmp.org [mailto:owner-classiccmp@classiccmp.org]On Behalf Of Curt Vendel Sent: Wednesday, August 08, 2001 7:09 PM To: classiccmp(a)classiccmp.org Subject: Re: Two NICs in one machine - how? Russ, This is a common problem with 3COM's, especially with Win NT, they just don't play well together and despite changing settings in the MCA nvram, they usually still wont cooperate well together. Try using a 3COM and another brand like SMC or DLink which will not try to fight it out with the other 3COM. Curt ----- Original Message ----- From: Russ Blakeman To: Classic computers message group Sent: Wednesday, August 08, 2001 6:26 PM Subject: Two NICs in one machine - how? Curious if any ethernet experts are out there - I finally got my PS/2 9595-OPT server out of storage and built with WinNT4.0 and originally wanted to put two NICs in - one is a 3Com 3C523 with AUI/Coax and the other is a 3C529TP with AUI/RJ45 - both ethernet though. NT finds thema nd seems to agree with them and I am able to give each a TCP/IP address but the network never comes up. If I pull the 523 (or even the 529) it does. Where's the conflict coming from? What's the easiest way to correct this? I've had token ring and ethernet in at the same time int he past fine but the problem seems to be due to the same type of network topology being duplicated.