we have a Cisco catalyst express 500G switch (WS-CE500G-12TC;IOS:12.2(25)SEG5) with SFP: GLC-SX-MM transceivers. We want to connect a remote building (aproximately 50 meters).
For now, we connecting this two buildings via 2 optical converters with 100Mbit/s speed and then metalic connection to switch.
Now we want to migrate this connection to 1Gbit/s. We want to use a SFP ports so direct connection to switch will be used and converter Alied Telesys AT-MC1004 will be on other side. I painted it on pictures (actual situation-1 and new situation-2). I think all prerequesites are good, but link status is "no link on the port" on cisco switch...
Can someone idea where can be a possible problem or how to diagnostic this problem?