RedHat 5.2 3c905b 100Mbit-FullDuplex problem

Network problems :

I had many problems getting my 3com "cyclone" 3c905b card to properly work on RedHat 5.2. It seems that even though I had properly configured everything, I could never get the 100Mbit speed while connected to my Cisco 2924XL: switch. Here is how I got around the problems :

From the SCYLD Computing Corporation's Diagnostics page, I needed to download a few programs to help with this problem.
- From the SCYLD Computing Corporation's Diagnostics page, I needed to download a few programs to help with this problem.
- First get the mii-diag source code (may need the libmii.c as well)
- Next get the 3c5x9setup source code
- Next get the pci-config source code
- Finally get the vortex-diag source code
- I had trouble compiling the vortex program, even though the instructions are at the bottom of the source code. However, I will give the exact syntax I used anyway - compile the vortex with " cc -O -Wall -o vortex-diag vortex-diag.c".
- I have included links to my pre-compiled versions for anyone else having problems : 3c5x9setup, mii-diag, pci-config, and vortex-diag
- With these programs compiled, I wrote two quick scripts to help me out with this. They are as follows (both designed to run from the directory where all the source code, binaries and libraries are already present - my case is /usr/local/Install/network) :
  fix_100_mbit.sh
```
./mii-diag -F100baseTx-FD
./mii-diag 

## use "./mii-diag" with no options to check

## all information from the : http://www.scyld.com/diag/index.html website
    
```
  fix_10_mbit.sh
```
./3c5x9setup -fv

## use "./3c5x9setup -fv" to check

## all information from the : http://www.scyld.com/diag/index.html website
    
```
- Next, I needed to create a startup script that would do this for me on bootup. This looks like ... :
  /etc/rc.d/init.d/nicfix (to set the interface at 100Mbit/Full Duplex)
```
echo -n "Setting eth0 to 100Mb - Full Duplex: "
cd /usr/local/Install/network
/usr/local/Install/network/fix_100_mbit.sh
echo
    
```
  /etc/rc.d/init.d/nicload (one liner to load the kernel module since isapnp wasnt doing it properly)
```
/sbin/insmod 3c509
    
```
- And finally, I needed to modify the /etc/rc.d/init.d/network script to call these pieces upon a proper startup, and at precisely the right time. ( If you dont put this in the right spot in the network script, you can hose your whole network configuration ). I put it between lines 82 and 83, which was in the start area, right after the "for i in $interfaces; do" and the "./ifup $i boot" lines. My inserted text looks like this (remember, I am using eth1 for my problem card - you may need to change this ) :
```
#####
#####  Load 3c509 modules - Paul A. Luzzi - 10-11-2000
#####
  if [ "$i" = "eth1" ]
    then
      echo "Loading module for 3c509 card:"
      /sbin/insmod 3c509
      echo
    fi
#####
#####  End of custom section added by Paul A. Luzzi
#####
	
```