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5548UP / N2K-C2248TP-E-1GE - Twinax cable 10Gbase-(unknown)

HI,

Just building some 5548UP's with N2K-C2248TP-E-1GE Fex's and we're using Cisco Twinax cables to connect between the 5K's and 2K's (part number SFP-10G-AOC2M).

All interfaces are up and seem to be working ok, no errors etc.  But when we do a show int status the SFP's are showing as type unknown.

Is this an issue.?

Ethernet1/11
    transceiver is present
    type is 10Gbase-(unknown)
    name is CISCO-AVAGO
    part number is AFBR-7CER02Z-CS1
    revision is B1
    serial number is AVE1742K01J-A
    nominal bitrate is 10300 MBit/sec
    Link length supported for copper is 2 m
    cisco id is --
    cisco extended id number is 4

SFP calibration is invalid

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