Why Is There No Link When Connecting a GS1920 Switch and a FLEX 700H via SFP?

Zyxel_Stanley

Question:
A GS1920 switch and a FLEX 700H fail to establish a connection when using SFP modules. The devices do not recognize the modules, and no link is formed. What are the possible causes, and how can this issue be resolved?

Answer:
Link failures between the GS1920 switch and the FLEX 700H when using SFP modules are typically caused by module incompatibility, port type mismatch, or unsupported DAC modes.