I've been using an old box for almost 4 years as a LRP box, upgraded over time to it's current Bering uLibc 2.0. I need to go slightly OT for a few paragraphs before I venter back on topic.
I am in need of setting up a DMZ, so I plopped in another CS8900 card I have laying around next to the two that are working perfectly. It seems like this old Gateway box doesn't have enough interrupts available, because I just can't get eth2 to come up. Strange, since there are plenty of ISA slots... First, am I interpreting /proc/interrupts correctly:
more /proc/interrupts CPU0 0: 338352 XT-PIC timer 1: 246 XT-PIC keyboard 2: 0 XT-PIC cascade 8: 0 XT-PIC rtc 10: 87207 XT-PIC eth0 11: 90819 XT-PIC eth1 NMI: 0 ERR: 0
eth2, which I set to interrupt 12 in the card's config utility, is nowhere to be seen. If I switch it to int 5, I am able to see eth2 (int 5) but eth1 (int 11) drops off the list. That's why I think there aren't enough interrupts.
So, assuming that is correct, is there any way to set up a DMZ using only 2 interfaces? If not, I guess I need to scrape up some new hardware. Unless I can figure out a way for it to give up that keyboard interrupt that I don't need...
Thank you for listening to my ramblings, hopefully someone out there will have a good suggestion.
It looks like you've got pleanty of IRQ's available, but what are you using for I/O addresses? I'd suspect some other conflict with overlapping I/O's, rather than "not enough interrupts".
Note that the CS8900 looks like it requires 16 contiguous I/O addresses, so you need to make sure you don't put another card (or have other I/O resources, like parallel or serial ports) within 16 addresses of the base address of each card.
-- Charles Steinkuehler [EMAIL PROTECTED]
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