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Juno, 10Gbps NIC(ixgbe drivers) being forced to 1Gbps?

asked 2016-03-29 01:48:27 -0500

baboune gravatar image

updated 2016-03-29 02:28:28 -0500


32 servers openstack Juno, Ubuntu 14.04 LTS, 3.13.0-55-generic, managed/setup by fuel 6.1, using neutron vlan, and ceph as Swift backend. All 10Gbps network capable (switches, NICs, etc), 2 chassis. One chassis (16 blades) functioning well. Problems: - Other chassis (16 blades) has 10Gbps NIC but those are being set to 1Gbps. At boot, we can see that they start at 10Gbps but somewhere along the startup of the nodes, the NIC defaults to 1Gbps - If backplane switch is set to 10gbps then no network is established. - NIC doesn’t take changes from ethtool, it’s acting very weird.Tried turning of auto negotiation with “ethtool –s eth1 autoneg off” and get error:

Cannot set new settings: Invalid argument. not setting autoneg <<

Using linux ixgbe drivers.

lshw -class network
       description: Ethernet interface
       product: 82599 10 Gigabit Dual Port Backplane Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: 01
       serial: ec:f4:bb:d4:be:5c
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress vpd bus_master cap_list rom ethernet physical fibre 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=ixgbe driverversion=3.15.1-k duplex=full firmware=0x8000078a latency=0 link=yes multicast=yes speed=1Gbit/s
       resources: irq:28 memory:91b00000-91bfffff ioport:2020(size=32) memory:91c04000-91c07fff memory:91e00000-91e7ffff memory:91f00000-91ffffff memory:92000000-920fffff

The NIC is 10Gbps but shows at 1Gbps.

Any known bugs that could set NIC to 1Gbps?

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answered 2017-04-19 04:02:59 -0500


I have the same problem were my Nic is exactly the same model.

Kernel load the nic as 10 Gbps, ethtool shows 10 Gbps but the drivers showing capacity of 1 Gbps.

I have daily some issues when I reach traffic above 3 Gbps. Could it be related to the drives?

Would be an update of the drivers: ( a solution for the problem?

Ha someone already performed an update?

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Asked: 2016-03-29 01:48:27 -0500

Seen: 349 times

Last updated: Mar 29 '16