Public bug reported:
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.
** Affects: ubuntu
Importance: Undecided
Status: New
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Intel 82576 NIC trouble with igb module
https://bugs.launchpad.net/bugs/633543
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