Tuesday, May 15, 2018

Cisco Nexus 3K C3048TP SFP+ transceivers...

Hey all - I have a Nexus 3k 3048 that I am trying to use the 10GbE interfaces (1/49-1/52) on. I picked up "Cisco compatible" transceivers from fs.com and although they've been helpful so far, they're still not working. I am running NX-OS 7.0(3)I4(7) with no other issues. The transceivers show up when I do "show inventory all":

NAME: Ethernet1/49, DESCR: Fiberstore

PID: 10Gbase-SR , VID: SFP-10GSR-85 , SN: D87B1426211

NAME: Ethernet1/50, DESCR: Fiberstore

PID: 10Gbase-SR , VID: SFP-10GSR-85 , SN: D87B1426210

NAME: Ethernet1/51, DESCR: Fiberstore

PID: 10Gbase-SR , VID: SFP-10GSR-85 , SN: D87B1426212

However, when I show the interface status I see:

Eth1/49 KCLOUD1ESX1 10GbE notconnec trunk full 10G 10Gbase-SR

Eth1/50 KCLOUD1ESX2 10GbE notconnec trunk full 10G 10Gbase-SR

Eth1/51 DESKTOP 10GbE notconnec 1 full 10G 10Gbase-SR

I have forced the speed to 10000 and full duplex but cannot get the interfaces to come up. On the other end of the interfaces are ESXi hosts using Mellanox ConnectX NICs with Finisar transceivers which work no problem going into a Dell PowerConnect 5548 (with Finisar transceivers). The FS.com part that I ordered is this one https://www.fs.com/products/11552.html . I tried to run a command about unsupported transceivers disable or similar, but no real change - port still won't come up. Also tried auto negotiate/force negotiate on the ESXi side as well.

Any thoughts?



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