I have 4507R with 4506 GBT Module and couple of 2955 industrial switches to get connected to this 4507 soon. What i had found is 2955 switches comes with 100LX fiber ports and 4506 GBT doesnot support 100 LX. supported modes on 4506 GBT are 1000LX, 1000SX, 1000ZX, 1000BU. Is there any way to connect this 2955 switches with 4506 GBT module using 1000LX SFP's?
Also pondering on other option of connecting 3750-12S stack of 2 switches with GF-100-FX to 2955.
Not the 4506 card but the WS-X4148-LX-MT can be compatible with cat2955S(100Base-LX.
Cat2955 should be connected with MT-RJ Fiber-Optic Connector. You
would need to have an 100BASE-LX SFP on the 4K side but unfortunately
cisco don't make one for the gigabit ports on that switch. I'm afraid
you are going to have to go with an external media converter.