Gbic And Sfp Slots; Figure 6. Gbic Module; Figure 7. Sfp Transceiver - Allied Telesis AT-8500 Series Installation Manual

GBIC and SFP Slots

The AT-8550GB switch has two GBIC slots, and AT-8550SP switch has
two SFP slots. The slots are labelled Port 49 and Port 50. Each slot can
accommodate one optional fiber optic Gigabit Interface Converter (GBIC)
or Small Form-factor Pluggable (SPF) transceiver.
These modules are a fast and easy way for you to add an 1000 Mbps fiber
optic port to your Fast Ethernet switch. You can use the modules to extend
the distance of your network, build a high-speed backbone network
between switches, or connect additional end nodes to the network, such
as high-speed servers.
Figure 6 shows an example of a fiber optic GBIC, and Figure 7 shows an
SFP transceiver.
When you install a GBIC or SFP in Port 49 or Port 50 and the module
establishes a link with its end node, the corresponding twisted pair port,
Port 49R or 50R, changes to a redundant status. A link on a GBIC or SFP
port always takes precedence over that of the corresponding 10/100/
1000Base-T twisted pair port.
For a list of the GBIC and SFP modules supported by the
AT-8550GB and AT-8550SP switches, contact your Allied Telesis
sales representative or refer to our web site at:
www.alliedtelesis.com.
AT-8500 Series Layer 2+ Fast Ethernet Switches Installation Guide

Figure 6. GBIC Module

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Figure 7. SFP Transceiver

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