Hi Everyone,
We're facing the fiber links issue between two cisco switches. We have WS-C3850-24T switch with C3850-NM-2-10G network module and SG-350XG-24F switch. We're planning to use Cisco10G-Base-SR module and Alantek LC-LC-DX OM3 50/125um UPC patch cable for the trunk links between those switches. After trunk configuration and layer 1 fiber patch cable set up, we didn't see any CDP neighbor on both switches and they didn't know each other. In WS-C3850, interface status up and protocol up and also the same in SG-350XG but CDP neighbor doesn't appear.
We have tried another way with copper cable with the same configuration. At that time, they are working pretty well. We can see CDP information and ping interface VLAN IP between switches.
We're concerned about the transceiver module and patch cable. Are we miss-use on that? Please give us some advice and suggestions.
