Intel 82576 NIC trouble with igb module

[Whit Blauvelt]

We have two new Supermicro servers with Intel 82576 NIC chips, running 10.04 server with 2.6.32-24-server, which uses the igb module to support them.

What works: The two systems can talk to each other, either through any of several switches or over a crossover cable.

What doesn't: Neither system can talk to, or be talked to by, any other system on the LAN.

When checking the arp tables on the system, they can see each other's IP and MAC, but they fail to get the MAC of other systems, although if those systems have been, for instance trying unsuccessfully to ping them they do see the IPs. The same is true from the other side. The MAC address of these systems does not get through, except to each other.

We've tried this with a 3com 2948-SFP switch, with a couple of 3com 2924-SFP Pluses, and with a Netgear unmanaged switch. The result is entirely the same. However, in another shop, where the systems were first configured, they were working fine with a LAN based on an unmanaged Belkin switch in communicating with other systems. That's not the target installation though.

This result is with fixed IPs. They can't get DHCP assigned across the current LAN, so that's not testable. Fixed IPs are the goal though.

I've searched and found nothing. I called Supermicro's SuperServer support line, and was told they've seen a similar problem with older Cisco routers, but have no record of it with 3coms. We've just updated the firmware to the latest on one of the 2924s, which didn't help.

[Whit Blauvelt (whit-launchpad)]

The same problem is there when these systems are booted with the latest System Rescue Disk (Gentoo based, also a 2.6.32 kernel). I haven't been able to find any reports of this problem searching kernel.org or here.

[Jeremy Foshee (jeremyfoshee)]

Hi Whit,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 633543

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]