Dear OpenVSwitch users and developers,
I use openvswitch on some of my servers since a few months and I am very
happy with it. Thank you for this great software!
Now, I encountered a strange problem:
I have a server with a Intel Pro/1000 MT Dual Port NIC (PWLA8492MT,
82546GB chip) which works fine when I configure it directly or with
vlan/bridging as it is in the kernel for some time. If I configure
openvswitch, I can see traffic with tcpdump, but not send any packages.
ARP requests are answered by the card/server, but never leave it. Other
NICs in the server (Intel 80003ES2 dual port 1GBit on-board, Intel
82599EB dual port 10GBit PCI-e Adapter X520-2) work fine. I replaced the
PCI-X card by a similar one (also 82546GB chip) which also does not
work. Instead a PCI-e Intel Pro/1000 PT Dual Port NIC (EXPI9402PT,
probably 82571GB chip) works.
I removed all other PCI-X cards and tried different slots without success.
I assume it is a bug in the NIC firmware of 82546GB chips. Has anyone a
working PCI-X card (with this chip or another one)?
Has a developer an idea what openvswitch does different than the old
kernel code which could cause such an effect? I would like to test a patch!
My system is:
Ubuntu 12.04
Kernel 3.2.0-29-generic, 64-bit
Openvswitch 1.4.0-1ubuntu1.2
Thank you!
Timm
--
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Dr. Timm Essigke
Structural Biology/Bioinformatics
University of Bayreuth
Universitätsstr. 30, BGI
95447 Bayreuth
Germany
Telephone: +49-921-55-3547
Fax: +49-921-55-3071
e-mail: [email protected]
http://www.bisb.uni-bayreuth.de/
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