10-01-2014 11:24 AM - edited 03-07-2019 08:57 PM
Hi. I'm setting up a 3750-X with fiber GLC-LH-SM SFPs. I've got an AT-2916SX NIC. The connection will not come up. The switch and NIC settings are very basic, nothing fancy. Both are set to Autonegotiate. Do I have a compatibility issue?
Thanks,
Vincent.
10-01-2014 11:51 AM
Hi,
Try crossing the fiber stands on one side of the cable and than test again.
HTH
10-01-2014 11:54 AM
I tried that. No joy.
10-01-2014 12:01 PM
ok, you SFP is long haul (GLC-LH-SM SFP)
Are you using a single mode fiber patch cord?
If yes, have you tried a different SFP?
10-01-2014 12:47 PM
We don't have any SM so I'm using MM. I have an LC-LC cable and when I connect it to two ports, they come up. I've also patched two LC-SC cables and the ports come up.
I've swapped the SFPs too.
10-08-2014 09:53 AM
We might have an answer. We think the GLC-LH-SM modules won't talk to the SX NIC. We've ordered some GLC-SX-MMD modules to test.
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