Proliant ML370 G3 Problems with two network adapters in RedHat 7.1

[Ronald Picado]

I've a Proliant ML370 G3 with RedHat 7.1. This server has two network adapters but only one is working. This is the configuration:

#ifconfig
eth0
Link encap:Ethernet
HWaddr 00:02:A5:45:80:CF
inet addr:172.16.1.85
Bcast:172.16.255.255
Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST
MTU:1500
Metric:1

eth1
Link encap:Ethernet
HWaddr 00:02:A5:45:81:47
inet addr:172.16.1.86
Bcast:172.20.255.255
Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST
MTU:1500
Metric:1

In the reality, boot ip responds, but only "hear" by eth0. In the network monitor there's no activity for eth1. If eth0 is disabled both ip die.

In /etc/modules.conf
# cat /etc/modules.conf
alias eth0 eepro100
alias eth1 eepro100

I don't know where's the problems

Thanks to any help.

Ronald Picado

[Jerome Henry]

Yr Bcast on eth1 should be 172.16.255.255 instead of 20, as both cards are on same network.
Try to ping both on this basis and see if they respond.
HTH
J

[Ronald Picado]

Jerome, this mistake was one of my tries to fix the problem. After the change you said me, the problem continues, must be something else..
Thank you
Ronald

[Steven E. Protter]

I think Linux might not like two cards on the same subnet.

I know in the case of HP-UX, you crash the network daemon.

Try the second card on a different subnet/ip combo and see if networking is stable.

If you are trying to team the cards, additional software is required.

I have a Linux box handy and if you want me to test my theory, I'd be glad to for a few points. Just post the request.

SEP

[Jerome Henry]

Mmm...
Steven is right on this point. But your problem is odd indeed. Basically, up to Red Hat 7.1 (which kernel version do you use, you may be before or after that point), 2 NICs on same network wasn't well supported. But the effect was usually that both IPs were seen from one NIC only, as if it had another alias and no other NIC was set.
This could be part of your problem, but your ifconfig shows both MAC, which indicates that both cards are seen.
What is strange is that once ifconfig shows the NICs, they are said to be detected and working on the system. Idea of this would be that you have a hardware prob on your cable ! Which you must have checked I guess.
Your cards being PCI, you shouldn't need to add I/O address in your modules.conf, but it should be worth checking, or adding sth like 'options wd io=0x280, 0x300' to avoid the system recognizingonly one interruptu*ion and assigning it to only one card.
You may try also to suppress one card, and run kudzu, I had this trouble once on RH7.3, 2nd card not seen on the first install as I had desactivated auto-kudzu.
If this doesn't work, tell us more !
- Is this Ifconfig the actual one, do you set it up by hand, or do you use 'neat' command ?
- Same questions for your modules.conf
- What happens when you ping your IPs from your box ?
- What happens when you ping both IPs from another machine on the network ?
RGDS.
J