Unity IO module SFP with Cisco switch

Question

Hi, we have Unity IO module with SFPs from factory (Axiom 10GBase-SR SFP+ 850nm 300m LC MM Transceiver PN 019-078-041) connected to Cisco switch (C9300) with 10GBase-LRM SFPs. Both sides are IP network, so it should be pretty straightforward to configure it but we still have Link down on these ports (Unity side). Does anyone has idea how to configure it, or why these ports are not sensing link? Simple stuff like exchanging cables, re-seating SFPs has been tried. There's not much else to configure in EMC web gui.

DELL-Josh Cr · Accepted Answer

I am seeing that SFP listed as an SR optic and the Cisco one listed as LR. That is probably the issue.

DELL-Josh Cr · Answer

Hi, Are the ports in a LAG or just individual ports? The status shows up on the Cisco side?

Nick and Name · Answer

Hi, I've tested both ports in port-channel and single ports. I don't see anything in Cisco logs. Looks like nothing was connected to ports.

DELL-Josh Cr · Answer

Are the SFP modules on the Cisco side Cisco ones or EMC ones? It seems like it is isn’t even trying to make a connection.

Nick and Name · Answer

Original Cisco SFPs in Cisco switch and Unity has original SPFs right from factory.

I've tried to connect fiber cable between Unity SPA and SPB SFPs (just for test) and line went immediately up. So SFPs work. It's just not working with Cisco switch.

DELL-Josh Cr · Answer

Do you have the part numbers for each of the SFPs? Maybe there is some incompatibility.

Nick and Name · Answer

Yes I do,Unity SFP PN: 019-078-041Cisco: SFP-10G-LRM

Nick and Name · Answer

Yep. You're right. I focused just on MM vs MM. But totally missed that one is 850nm MM and second one is 1310nm MM. Thank you!

Unity

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