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One of the GBIC modules does indeed have no light showing on the transmit side. We are awaiting confirmation from Netgear that the module itself is indeed dead. 
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One of the GBIC modules does indeed have no light showing on the transmit side. We are awaiting confirmation from Netgear that the module itself is indeed dead.

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ok, please update, when you get any info from netgear
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ok, please update, when you get any info from netgear

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We have 2 FSM726 switches linking 2 offices via a fibre cable. The network went down and the problem seems to be down to one of the switches. It previously worked fine for 6 months. The fibre has been checked and is currently back up running on old kit.<br />
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&nbsp;The web based menu on switch A does not show any GBIC modules plugged in. We have changed the port config from Auto to GBIC amongst other methods to get it to work. <br />
Eventually we had the switch replaced but the replacement switch does exactly the same thing. <br />
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Switch B does indicate a GBIC module is installed (The port shows as Blue for 'Training' on the web based config). To confuse matters, we have also just discovered that Switch B shows the GBIC port as Blue even if no module is installed. <br />
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Any ideas would be greatly appreciated. 
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We have 2 FSM726 switches linking 2 offices via a fibre cable. The network went down and the problem seems to be down to one of the switches. It previously worked fine for 6 months. The fibre has been checked and is currently back up running on old kit.

 The web based menu on switch A does not show any GBIC modules plugged in. We have changed the port config from Auto to GBIC amongst other methods to get it to work. 
Eventually we had the switch replaced but the replacement switch does exactly the same thing. 

Switch B does indicate a GBIC module is installed (The port shows as Blue for 'Training' on the web based config). To confuse matters, we have also just discovered that Switch B shows the GBIC port as Blue even if no module is installed. 

Any ideas would be greatly appreciated. 

Netgear Switch will not 'see' GBIC module

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.