Wiring Configuration; Maximum Distance; Power Over Ethernet; Cable Requirements - Allied Telesis AT-GS924MX Installation Manual

Chapter 1: Overview
Wiring
Configuration
Maximum
Distance
Power over
Ethernet
Cable
Requirements
26
The wiring configuration of a port operating at 10 or 100 Mbps can be MDI
or MDI-X. The wiring configurations of a switch port and a network device
connected with straight-through twisted pair cabling have to be opposite,
such that one device is using MDI and the other MDI-X. For instance, a
switch port has to be set to MDI-X if it is connected to a network device set
to MDI.
You may set the wiring configurations of the ports manually or let the
switch configure them automatically with auto-MDI/MDI-X (IEEE 802.3ab-
compliant). This feature enables the switch to automatically negotiate with
network devices to establish their proper settings.
The MDI and MDI-X settings do not apply when ports are operating at
1000 Mbps.
The ports have a maximum operating distance of 100 meters (328 feet).
The 10/100/1000Base-T ports on the AT-GS924MPX and AT-GS948MPX
Switches support Power over Ethernet (PoE). The ports supply DC power
to network devices over the network twisted pair cables. The switches
support PoE (IEEE 802.3af) and PoE+ (IEEE 802.3at). For background
information, refer to "Power over Ethernet" on page 28.
The cable requirements of the ports are given in Table 1.
Table 1. Twisted Pair Cable for the 10/100/1000Base-T Ports
Cable Type
Standard TIA/EIA 568-B-
compliant Category 3 shielded
or unshielded cabling with 100
ohm impedance and a
frequency of 16 MHz.
Standard TIA/EIA 568-A-
compliant Category 5 or TIA/
EIA 568-B-compliant Enhanced
Category 5 (Cat 5e) shielded or
unshielded cabling with 100
ohm impedance and a
frequency of 100 MHz.
Standard TIA/EIA 568-B-
compliant Category 6 or 6a
shielded cabling.
10Mbps 100Mbps
Yes Yes
Yes Yes
Yes Yes
1000Mbps
No
Yes
Yes