RedHat, 3c509, and a HUB

From: Kevin Carpenter (
Date: Thu Jun 01 2000 - 12:30:36 EST

Ye That Know,

     Here is my setup, a brief description of what does and doesn't seem to
work, and at the end of the email my various settings. Any help would be
greatly appreciated.

     Are these 184.143.0.x IP addresses out of the valid class "C" range?

RH6.0 -:> 3c509 -:> HUB (10BaseT - Half Duplex) <:- 3x509 <:-RH5.1
oldbox newbox
                              Both computers are 486/66 Intels.

I get solid 'connect' LEDs on the HUB for each NIC.

Pinging 'newbox' from 'oldbox' = 0 Packets returned 100% loss - BUT I can
see the LED on the HUB blinking as it pings so I _think_ it might be sending

Pinging 'oldbox' from 'newbox' - HUB LED does not blink - screen reads:
        ping: sendto: Network is unreachable
        ping: wrote: 64 chars ret -1

Pinging <the loopback> works great on both NICs.

To config the NIC cards I booted to DOS and used the 3Com utility
3c5x9CFG.exe. The card setups are identical and are as follows:

                               I/O Base:   300h
                                        IRQ:  10
                          Boot PROM:  NA
                           Trans' Type:  On Board TP (RJ45)
   Nework Driver Optimization:  Server
               Max Modem Speed:  9600
                                   PnPlay:  Disabled
                            Full Duplex:  Disabled

The conf.modules files are identical and look like this: -- alias eth0 3c509.o options 3c509.o io=0x300

The hosts files look like this: newbox; localhost.localdomain oldbox # loopback

oldbox; localhost.localdomain newbox # loopback

Lastly, I type the following by hand to start the NICs:

newbox: ifconfig eth0 netmask up

oldbox ifconfig eth0 netmask up

It is interesting that the HUB LEDs do not light until the NICs get this command. This is probably normal.

-- -:>Kevin Carpenter Home: Work:

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