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New Member

40G interface on Nexus 3064

I want to bring up 40G interface between two nexus 3064 over the fiber but it's not coming up. Have configured the switch for 48*10G and 4*40G. I'm using QSFP on both the switches, OM3 straight fiber cable with MPO connector. The interfaces are not coming up. Notably, it comes up with Coax 3M cable. So it's fine with coax but not with fiber. Will appreciate any help. Thanks.

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VIP Super Bronze

40G interface on Nexus 3064

Since you are using OM3 fiber, are your 40Gig optics Multimode?

New Member

40G interface on Nexus 3064

Yes. We are using the 40G-SR4 transceiver. Output below from the switch:

# sh int ethernet 1/49 transceiver de
    transceiver is present
    type is 40Gbase-SR
    name is CISCO-AVAGO    
    part number is AFBR-79E4Z-CS1 
    revision is 02
    serial number is AVP1606S271    
    nominal bitrate is 10300 MBit/sec
    Link length supported for 9/125 um fiber is 5000 m
    Link length supported for 50/125um fiber is 300 m
    cisco id is --
    cisco extended id number is 16

           Transceiver Detail Diagnostics Information (internal calibration)
                Current              Alarms                  Warnings
                Measurement     High        Low         High          Low
  Temperature   25.63 C         N/A         N/A         N/A           N/A
  Voltage        3.30 V         N/A         N/A         N/A           N/A
  Current        0.00 mA         N/A         N/A         N/A           N/A
  Tx Power       -1.33 dBm        N/A         N/A         N/A           N/A
  Rx Power        N/A            N/A         N/A         N/A           N/A
  Note: ++  high-alarm; +  high-warning; --  low-alarm; -  low-warning

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