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Network Problem 2 win98 and Linux

Posted on 2000-04-08
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Last Modified: 2010-03-18
I'm trying to connect my 2 win98 boxes to a linux box.  I'm running red hat 6.1 multihomed.  I have my cable mode connected into one Nic (eth0 on linux) running DHCP and it's working great.  Now the nic (eth1) connected to my network is not working correctly.  I'm getting a connection light on my hub and on the nic but when i try to ping either of my win 98 boxes it times out and when i try to get my win98 boxes to ping the linux box they time out.  I have the following info

Win98-1 10.10.10.13
subnet 255.0.0.0
gateway - none

Win98-2 10.10.10.11
subnet 255.0.0.0
gateway none

linux eth1 - 10.10.10.12
subnet 255.0.0.0
gateway none

When i run ifconfig on the linux box it shows eth0 working fine with RX Packets in the 7000 errors:0 Dropped:0 etc and the TX apckets listed as 82 errors:0 etc.

eth1
RX packets:0 Errors:0 etc.
and the TX packets:24 errors:0

I've switched out the cable and moved it to another port on the HUB and still nothing.  


Can some one help me out with this.


Thanks
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Question by:ttrogden
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by:ttrogden
ID: 2696776
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jlevie earned 200 total points
ID: 2697230
You've got an IRQ problem. Linux can send packets out (which it's doing) with out the IRQ for the card working, but it won't be able to receive any data (and it isn't).

What card are you using and what IRQ is it getting (it's in the "ifconfig eth1" output)? Also are both cards the same make/model, and if so have you aliased them in /etc/conf.modules? If you don't know what that means just show me the contents of /etc/conf.modules.
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by:ttrogden
ID: 2697254
the card I'm having problems with is a 3c509b

The /etc/conf.moduels out put is as follows
alias eth0 3c59x
alias eth1 3c509
alias eth2 3c59x <- I'm not sure where that came from

the output of ifconfig shows eth1 using irq 10 and address 0x300 but when it boots it shows it using irq 5

I've tried to find the 3c5x9cfg.exe program to make sure that it's not set to PnP but i can't find the program on the 3com website  - do you think that could be my problem ??
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by:jlevie
ID: 2697666
Yep, I'll bet that it's in PnP mode and linux can't use it that way. The driver diskettes are at http://support.3com.com/infodeli/tools/nic/3c509/3c5096.1.htm. 3com has rearrainged the driver support distribution and I can't tell which of the two you need to download, but I'll hazard a guess and say that it's disk2.

You can delete the eth2 alias from conf.modules. I don't know where it came from either, but its obviously bogus.
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by:ttrogden
ID: 2697781
so - when i find the cfg file for the 3c5x9 nic and i boot into dos and disable PnP - whats next - do i have to set the IRQ and Base manually ??  Does something have to be done in Linux - do i need to remove the card and install it again ??


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by:ttrogden
ID: 2697843
ok - it's working.  I'm going to be posting another questions asking how to setup IPchains so that i can surf the web throught the linux box.



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by:jlevie
ID: 2697868
I assume you let the card be autoconfigured or that the existing IRQ works. Letting 3c5x9cfg autoconfigure the card is safest so that it picks a free IRQ. And sometimes you need to reserve that IRQ for ISA use in the PCI bios config.
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by:ttrogden
ID: 2697896
thats exactly what i did.  

thanks again for your help !!

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