GLC-T doesn't work in Nexus 9372PX

[verny.alfaro]

We have a Cisco Nexus 9372PX unit, and  we try to insert 8 GLC-T without any success. The interfaces appear as: "is down (Link not connected)".

We get connectivity using two old SFPs of the same model, the only difference that I see is:

Nexus# sh int e1/1 transceiver
Ethernet1/1
    transceiver is present
    type is 1000base-T
    name is CISCO-METHODE
    part number is SP7041-R
    revision is
    serial number is MTC1911015W
    nominal bitrate is 1300 MBit/sec
    Link length supported for copper is 100 m
    cisco id is --
    cisco extended id number is 4

Nexus#
Nexus#
Nexus# sh int e1/3 transceiver
Ethernet1/3
    transceiver is present
    type is 1000base-T
    name is CISCO-METHODE
    part number is SP7041_Rev_F
    revision is F
    serial number is MTC134706RS
    nominal bitrate is 1300 MBit/sec
    Link length supported for copper is 100 m
    cisco id is --
    cisco extended id number is 4

Nexus#

The first port is the one with the working SFP.

has someone experience a situation like this ?.. any help is very appreaciate.

Greetings

Verny

[Philip D'Ath]

Just for the hell of it, can you try hard coding the speed to 1000.

[verny.alfaro]

Thanks for your answer Philip, but already did that test, I put the port speed in 1000 without any success.

[Philip D'Ath]

I'm thinking you need to either try a newer version of Nexus software, or try RMA'ing one of the SFP's in case you have a dud batch.

[verny.alfaro]

Thanks Philip:

The actual NXOS version is: version 6.1(2)I3(3a), and I will try to update it.

The reseller give me another SFP's as result of the  RMA requests, but it doesn`t work.

Greetings ...

[verny.alfaro]

Hello

The switch was update from 6.1(2)I3(3a) to 7.0(3)I2(2b) without any positive change in the sfps operation.

The retailer open a case in cisco tac, no news or solution yet.

Thanks, 

Verny

[tcarsonrcs]

Verny did you ever find a solution to this?  Our 9372px is rejecting our new GLC-T's as well and we're on 6.1(2)I3(5)

I noticed the functional GLC-T's I have already plugged into it are running version '04' and the ones we just bought are '03'.  

In the attached picture the top one is the new GLC-T we bought (notice it's v03)

Bottom one is the GLC-T that was already in the nexus (notice it's v04)

[Peter Koltl]

Once I found on a Cat6800 that SFP replacement causes connectivity loss until all the config is removed from the interface then re-added.