Re: Link speed limited to 10gbps

Hi Anand,

We met the similar issue with Philip's.

CX314 card, two 40G ports connected back to back. We tested it both on Freebsd7.0 and CentOS 7.0.

But the speed seen were always 10G.

We didn't use Mellanox transceiver/cables.

[root@localhost var]# uname -a

Linux localhost.localdomain 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

[root@localhost var]# ethtool enp10s0d1

Settings for enp10s0d1:

        Supported ports: [ TP ]

        Supported link modes:   10000baseT/Full

        Supported pause frame use: No

        Supports auto-negotiation: No

        Advertised link modes:  10000baseT/Full

        Advertised pause frame use: No

        Advertised auto-negotiation: No

        Speed: 10000Mb/s

        Duplex: Full

        Port: Twisted Pair

        PHYAD: 0

        Transceiver: internal

        Auto-negotiation: off

        MDI-X: Unknown

        Supports Wake-on: d

        Wake-on: d

        Current message level: 0x00000014 (20)

                               link ifdown

        Link detected: yes

And the mstdump results are attached.

Please give me some guidance.

Thanks a lot.

mstpci_cr0_4099.dmp

mstpciconf0_4099.dmp

Regards,

Patrick