Allied Telesis AT-S80 User Manual
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Chapter 1: Overview
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Ports 17 and 18 on the AT-FS750/16 Switch and Ports 25 and 26 on the
AT-FS750/24 Switch
Ports 17 and 18 on the AT-FS750/16 switch and ports 25 and 26 on the
AT-FS750/24 switch are dual ports. Each has one 10/100/1000Base-T
twisted pair port and one transceiver slot for an optional SFP transceiver.
Note the following when configuring these dual ports:
By default, the twisted pair port of a dual port is the active port.
An optional SFP port is activated when it establishes a link with an end
node, at which point the affiliated twisted pair port changes to the
redundant state.
A twisted pair port and its affiliated optional SFP port share the same
configuration settings, including port settings and VLAN assignments.
When an SFP port establishes a link with an end node, it operates with
the same settings as the twisted pair port.