AT-9000 Gigabit Ethernet Switch Installation Guide
SFP Slots
The AT-9000/12POE, AT-9000/28, AT-9000/28POE, and AT-9000/28SP switches have four slots for 100Mbps 100Base-FX or 1000Mbps 1000Base-SX/LX fiber optic transceivers. The transceivers can be used to connect the switches to other host devices over large distances, build a high-speed backbone network between host devices, or connect high- speed devices, such as servers, to your network.
The switches support a variety of short and long distance, 100 and 1000 Mbps fiber optic SFP modules. For a list of supported SFP modules, contact your Allied Telesis representative or visit our website.
On the AT-9000/28, AT-9000/28POE, and AT-9000/28SP switches, the four SFP slots are paired with the four 10/100/1000Base-T ports. The combo ports are listed in Table 3.
| Table 3. Combo Ports |
| | |
| 10/100/1000 | SFP Slot |
| Base-T Port |
| |
| | |
| | |
| 25R | 25 |
| | |
| 26R | 26 |
| | |
| 27R | 27 |
| | |
| 28R | 28 |
| | |
The rules for using the combo ports are listed here:
Only one port in a combo pair is active at a time.
The twisted-pair port is the default active port.
The SFP slot becomes active when an SFP transceiver establishes a link to another network node.
The twisted-pair port of a combo pair remains deactivated so long as the SFP transceiver has a link to another host device.
The switch automatically reactivates the twisted-pair port if the companion SFP module loses its network link.
The twisted-pair port and SFP module of a combo port share the same settings, such as VLAN assignments, access control lists, and spanning tree.
