Cisco nexus 93128TX CVR-QSFP-SFP10 issue

[satish.txt1]

Folks,

I have cisco nexus switch 93128TX (running version nxos.9.3.4) with M12PQ GEM module. I want to terminate 10G fiber on it so i bought CVR-QSFP-SFP10 adapter from fs.com https://www.fs.com/products/72582.html 

Now cisco saying i have to configure speed-group range to turn 40G to 10G port and port range has to be 1-6 & 7-12 so on port e2/1 i set speed-group 10000 and it accepted my command but then i noticed following in my show interface output and don't know what is wrong here. does that means fs.com adapter not supported on cisco nexus 93128TX?

# show int e2/3 transceiver
Ethernet2/3
    transceiver is present
    type is QSFP-40G-SR4
    name is FS
    part number is QSFP-SR4-40G
    revision is B
    serial number is F2010424009
    nominal bitrate is 10300 MBit/sec per channel
    Link length supported for 50/125um OM3 fiber is 150 m
    cisco id is 13
    cisco extended id number is 16

Show interface

# show int e2/3
Ethernet2/3 is down (check speed-group config)
admin state is up, Dedicated Interface
  Hardware: 10000/40000 Ethernet, address: a46c.2ada.6942 (bia a46c.2ada.6942)
  MTU 1500 bytes, BW 40000000 Kbit , DLY 10 usec
  reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, medium is broadcast
  Port mode is access
  auto-duplex, auto-speed, media type is 40G
...
...

it stuck in (check speed-group config). my port isn't coming up somehow. do you think fs.com isn't supported or i am missing something here (i did run service unsupported-transceiver command also) 

[Reza Sharifi]

Hi,

fs.com products usually work fine with Cisco equipment. Also, the fact that you see this shows the port is working.

 transceiver is present
    type is QSFP-40G-SR4
Can you try a different port like 1, 2 3, etc..?
HTH

[satish.txt1]

This switches isn't in production so i have tried every single port also i have changed M12PQ to M6PQ GEM to just avoid strange 8 port limitation on this platform.

I have added speed-group command only on first port e2/1 hope that is correct way to configure. one more question why my above output showing 40G SR4 instead of 10G SFP? 

type is QSFP-40G-SR4

[Reza Sharifi]

Is this the exact part number for the module?

N9K-M12PQ

If yes, I don't see  CVR-QSFP-SFP10 listed in the comparability list.

https://tmgmatrix.cisco.com/?npid=137

You can also contact fs support team to make sure this is what you need.

HTH

[satish.txt1]

Its listed and showing you when you hover mouse on icon that CVR is required. not sure if i am reading it wrong. i did contact them and they are trying to test in lab but this is kinda urgent for me.. i have order cisco original QSA module so lets see if they work or not. 

[Reza Sharifi]

Its listed and showing you when you hover mouse on icon that CVR is required

I see. Thanks for pointing that out. I hope, it will get resolved quickly. 

HTH

[satish.txt1 · Accepted solution]

Ready for this?  As soon as i use cisco CVR-QSFP-SFP10 adapter it works  

# show int e2/1 transceiver
Ethernet2/1
    transceiver is present
    type is 10Gbase-SR
    name is CISCO-AVAGO
    part number is SFBR-7702SDZ-CS4
    revision is G2.4
    serial number is AGA144540E6
    nominal bitrate is 10300 MBit/sec
    Link length supported for 50/125um OM2 fiber is 82 m
    Link length supported for 62.5/125um fiber is 26 m
    Link length supported for 50/125um OM3 fiber is 300 m
    cisco id is 3
    cisco extended id number is 4
    cisco part number is 10-2415-03
    cisco product id is SFP-10G-SR

My interface is up and green 

# show int e2/1
Ethernet2/1 is up
admin state is up, Dedicated Interface
  Hardware: 10000/40000 Ethernet, address: 7c69.f610.6e88 (bia 7c69.f610.6e88)
  Description: INTERCONNECT-BSN003
  MTU 1500 bytes, BW 10000000 Kbit , DLY 10 usec
  reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, medium is broadcast
  Port mode is trunk
  full-duplex, 10 Gb/s, media type is 10G

[Reza Sharifi]

Wow, so the issue is with fs optics. If you work with fs's support, they will resolve this issue on their side.

This is great. Thanks for the feedback!