SFP compatibility Cisco 3850 10G slot

[noelciscoman]

Can I use a GLC-SX-MMD in a slot on a C3850-NM-4-10G?

I currently use the GLC-SX-MMD SFP module in a 2960x.  However, I recently was able to free up a couple of ports in the 3850 and I would like to move that SFP to the 3850 to provide the uplink instead.  I removed the 10G SFP+ that was in the slot on the and inserts the GLC-SX-MMD, but the SFP never shows up (not seen as inserted in log, and not seen in show transceiver detail on the interface to which it is plugged in.  I reverted to the 2960x and the SFP and link works just fine.  

Can anyone tell me if there might be a compatibility issue with GLC-SX-MMD and C3850-NM-4-10G?

Thanks.

[Kasun Bandara]

@noelciscoman hi, glc-sx-mmd is compatible with that module. https://tmgmatrix.cisco.com/?npid=407

try different ports in module and check logs to identify if SFP detected. Also try different SFPs if available. also check below commands,

#sh inventory 

after plugin. and check console logs (if you are using SSH to device, then enable monitoring with #ter mon command)

[noelciscoman]

Thanks.  I will try again.  I was watching from terminal and when I removed the 10G module that is not being used, I saw the log reflect the 10G SFP+ was removed.  However, when I insert the 1G module in the same slot, there is nothing in the log.  Thanks for confirming the compatibly.

[Flavio Miranda]

Hi

 It should support with IOS XE 16.1.1.

https://tmgmatrix.cisco.com/?npf=112&npid=369&npid=407

[Reza Sharifi]

What type of 3850 do you have? See below:

The C3850-NM-4-10G module is supported only on the 48-port Gigabit Ethernet models or on the 12-port or higher 10 Gigabit Ethernet models. The C3850-NM-8x10G and C3850-NM-2x40G modules are supported on the 24-port and 48-port multigigabit switches and also on the 24-port 10G SFP+ switch model. The C3850-NM-4-1G and C3850-NM-2-10G modules are not supported on the 12-port and 24-port SFP+ models.

Link for more info:

https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3850-series-switches/data_sheet_c78-720918.html

HTH

[noelciscoman]

The module works.  I have other links active on it.

NAME: "Switch 2 FRU Uplink Module 1", DESCR: "4x10G Uplink Module"
PID: C3850-NM-4-10G , VID: V01 , SN: FOC17343BS6

NAME: "Te2/1/1", DESCR: "SFP-10GBase-SR"
PID: SFP-10G-SR , VID: V03 , SN: AVA1731A8KA

NAME: "Te2/1/3", DESCR: "SFP-10GBase-CX1"
PID: SFP-H10GB-CU3M , VID: V03 , SN: TED1730B37U

NAME: "Te2/1/4", DESCR: "SFP-10GBase-LR"
PID: SFP-10G-LR , VID: V02 , SN: FNS222706U9

te2/1/2 should have the same module as te2/1/2 at the moment.  They were both seen until I swapped in a 1 gig module to te2/1/2 to accommodate different needs.  The 1 gig module was not seen, and now the 10g module is not seen (it was before it was taken out.  I am guessing a reload would resolve, but I am not in a position to do that.  I could jsut reseat the C3850-NM-4-10G, I suppose.  I might have a window for that...if that has a chance of correcting the issue.