Chapter 1: Overview
32
Combo Twisted Pair Ports and SFP Slots
Two twisted pair ports and SFP slots are paired together to form combo
port pairs. Each pair contains one 10/100/1000Base-T port and one SFP
slot. The combo port pairs for the switches are listed in Table 5.
The rule to follow when using the combo port pairs is to use only one
device in a pair at a time. For example, if you decide to use twisted pair
port 25R on the AT-GS924MX or AT-GS924MPX Switch, then you cannot
use SFP slot 25. Or, if you choose to use SFP slot 49 on the
AT-GS948MX or AT-GS948MPX Switch, then you cannot use the twisted
pair port 49R.
The rules for using the combo port pairs are listed here:
You may use either the twisted pair port or SFP slot of a combo
port pair, but not both at the same time.
If you connect both the twisted pair port and SFP slot of a combo
port pair to network devices, the SFP slot takes priority, and the
twisted pair port is blocked.
The SFP slot becomes active when the SFP transceiver
establishes a link to a network device.
The twisted pair port and SFP slot of a combo port pair share the
same settings, such as VLAN assignments, access control lists,
and spanning tree.
Table 5. Combo Port Pairs
Model
10/100/1000
Base-T Port
SFP Slot
AT-GS924MX and AT-GS924MPX 25R 25
26R 26
AT-GS948MX and AT-GS948MPX 49R 49
50R 50
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