Instant EtherFast® Series
Appendix A: Fiber Optic Modules (models EF3116 & EF3124 ONLY)
Important: Fiber Optic Modules will only function with model
numbers: EF3116 and EF3124. If you are not sure of the Switch’s model number, make sure there is a fiber optic module port in the front of the Switch. If it does not have a fiber optic module port, your
EtherFast®
4.Secure the fiber module with the screws from the faceplate. You may now remount the Switch into its rack if needed, then reconnect the AC power cable to power on the Switch and resume normal operation.
5.Install your multimode fiber optic cabling from the module.
Use the guidelines below to plan the layout of your network with other fiber- equipped devices from your Switch’s 100BaseFX fiber module.
100BaseFX Fiber Cabling Distance Limitations
Switch will not function with Fiber Optic Modules.
Introduction
Some Ethernet Switches are equipped with an expansion port for adding optional fiber optic expansion modules.
From
The Ethernet Switch
To
Switch or Distance Extender
Fiber
Transceiver
Duplex | Maximum Distance |
Full | 2000 meters (6560 feet) |
Half | 412 meters (1350 feet) |
Half only* | 208 meters (682 feet) |
The 100BaseFX Fiber Modules allow you to connect the Ethernet Switch to other switches, hubs, or routers in fiber optic network backbones. These mod- ules use
Fiber cabling can transmit your Switch’s data up to 2000 meters (6560 feet) away to another switch without requiring signal regeneration. The 100BaseFX SC Fiber Module (model number EF31SC) is available through your Linksys dealer.
Installing a Fiber Optic Expansion Module
To install a fiber module into the Ethernet Switch’s expansion port, follow these instructions:
1.Before installing the fiber optic module, you must first power off the Switch by removing the AC power cord. If the Switch is rack mounted, you should remove the Switch from the rack temporarily until the fiber optic module is installed.
2.Remove the faceplate from the unit by loosening the screws on either side with a screwdriver. Remove the expansion module from its packaging. Keep the screws for securing the fiber module to the Switch in step 4.
3.Slide your fiber expansion module into the Switch. The module should fit snugly into the Switch’s expansion port.
Note: The Switch’s fiber module will not run with Gigabit devices.
*A distance extender has an internal switch, whereas a transceiver does not. Switches generally use distance extenders, and hubs utilize both types of modules.
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