4200G + SFP

[John_Matrix]

Hello all!

I just installed a 4200G 12 ports + SFP module.

But the fiber link is still down.

I've "activated" the port who it has the SFP module in the web interface.

Must I do something else?

Thank you a lot!

PS : an SFP module can work at 100Mbps? Because our fiber part is 100Mbps.

[Fred_Mancen_1]

Are you using the SFP 100BASE-FX/SX? The 4200G does support SFP transceivers at 100Mbps, at the two last slots.

FAST ETHERNET SFP TRANSCEIVERS:


3Com 100BASE-FX SFP (Dual-Mode) 3CSFP9-81


3Com 100BASE-LX SFP (Dual-Mode) 3CSFP9-82

[John_Matrix]

Hello Fred!

No I have a 1000BASE-SX SFP.

When I use a SFP, I must connect it on one of the last port ?

Thank you!

[Fred_Mancen_1]

You are using the 3CSFP91 transceiver. This SFP works only at 1Gbps and in any slot. In order to work at 100Mbps you have to purchase a different SFP Transceiver (one of that two I mentioned above), and this one works only at the two last slots.

Regards

[John_Matrix]

Hello Fred,

Thank you for your answer, I will buy a new SFP module.

Regards.