Allied Telesis AT-9408LC/SP Series, Руководство по установке

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AT-9400 Series Layer 2+ Gigabit Ethernet Switches Installation Guide
21
Maximum
Distance
The ports have a maximum operating distance of 100 meters (328 feet).
Cable Type
The cabling requirements for a 10/100/1000Base-T port are:
ˆ
For 10 Mbps operation: Standard TIA/EIA 568-B-compliant Category 3
or better shielded or unshielded cabling with 100 ohm impedance and
a frequency of 16 MHz.
ˆ
For 100 Mbps operation: 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.
ˆ
For 1000 Mbps operation: 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.
Auto-MDI/
MDI-X
The twisted pair ports on the switch are IEEE 802ab-compliant and feature
auto-MDI/MDI-X. This feature, available when a port’s speed and duplex
mode are set through Auto-Negotiation, automatically configures a switch
port to MDI or MDI-X depending on the wiring configuration of the port on
the end node. This allows you to use a straight-through twisted pair cable
to connect any network device to a port on the switch.
If Auto-Negotiation is disabled on a port and the speed and duplex mode
are set manually, the auto-MDI/MDI-X feature is automatically disabled
and the port defaults to the MDI-X setting. But, using the AT-S63
management software, you can set it to either MDI or MDI-X.
Port Pinouts
Refer to Table 9 on page 71 for the port pinouts when a twisted pair port
operates at 10 or 100 Mbps in the MDI configuration and Table 10 on
page 71 for the MDI-X configuration. For port pinouts when a twisted pair
port operates at 1000 Mbps, refer to Table 11 on page 72.