Hello,
We're setting up a new dual X5560 server with a X520-DA2
dual-port 10G network adapter (82599). Have connected the 10Gs to
Cisco Nexus 5000 switches with two 3M SFP+ Direct Attach cables,
Cisco brand.
So far both ends are saying "link down". The X520-DA2 ports
were successfully tested back-to-back over a 1M Amphenol cable.
Originally had Amphenol 7M cables between the X520 and the
Nexus, but changed the cable as Cisco does not list Amphenol
as certified. Also successfully tested the X520 ports
back-to-back with one of the 7M cables.
Just starting to dig into this and wondering if anyone has
experience with a similar setup and might know something that
could help in making it work. Google has returned next to
nothing, though a footnote to a benchmark paper indicates a
Nexus and X520 as one of the configurations. However whether
fiber or copper cables were used is not specified.
Thanks,
David
$ ethtool -i eth4
driver: ixgbe
version: 2.0.62.4-NAPI
firmware-version: 0.9-3
bus-info: 0000:06:00.0
$ ethtool eth4
Settings for eth4:
Supported ports: [ FIBRE ]
Supported link modes:
Supports auto-negotiation: No
Advertised link modes: 10000baseT/Full
Advertised auto-negotiation: No
Speed: Unknown! (65535)
Duplex: Unknown! (255)
Port: FIBRE
PHYAD: 0
Transceiver: external
Auto-negotiation: off
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000007 (7)
Link detected: no
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