Allied Telesis AT-FS709FC Manuale Utente
4
Maximum Distance
The maximum distance of a twisted pair cable is 100 meters (328 feet). Cable
lengths that exceed this limit can result in poor or erratic network
performance.
lengths that exceed this limit can result in poor or erratic network
performance.
Ports 1X to 7X — MDI-X Configuration
An RJ-45 twisted pair port on a 10 Mbps or 100 Mbps Ethernet network
device can be wired as either MDI or MDI-X. Twisted pair ports on personal
computers, routers, and bridges are typically wired as MDI. Twisted pair
ports on switches and hubs are usually MDI-X.
device can be wired as either MDI or MDI-X. Twisted pair ports on personal
computers, routers, and bridges are typically wired as MDI. Twisted pair
ports on switches and hubs are usually MDI-X.
When connecting two network devices together, you need to use straight-
through twisted pair cabling when connecting two dissimilar ports together,
such as an MDI port to an MDI-X port. To connect two similar ports together,
such as an MDI port to an MDI port, you use a crossover twisted pair cable.
through twisted pair cabling when connecting two dissimilar ports together,
such as an MDI port to an MDI-X port. To connect two similar ports together,
such as an MDI port to an MDI port, you use a crossover twisted pair cable.
Ports 1X through 7X on the AT-FS709FC are configured as MDI-X. This
means that if you are connecting a computer, router, or bridge to one of these
ports, you probably need to use a straight-through twisted pair cable.
means that if you are connecting a computer, router, or bridge to one of these
ports, you probably need to use a straight-through twisted pair cable.
If you decide to connect another Ethernet switch to one of these ports, or a
hub, then you will probably need to use a crossover cable.
hub, then you will probably need to use a crossover cable.
Port 8MDI and Port 8MDI-X
There are two Port 8s. One port is configured as MDI and the other as MDI-X.
To connect a switch or hub to Port 8, connect it to Port 8MDI. When
connecting a workstation or server to Port 8, use Port 8MDI-X.
To connect a switch or hub to Port 8, connect it to Port 8MDI. When
connecting a workstation or server to Port 8, use Port 8MDI-X.
Note
You can use either Port 8MDI or Port 8MDI-X. You cannot use both
ports at the same time.
You can use either Port 8MDI or Port 8MDI-X. You cannot use both
ports at the same time.