Allied Telesis AT-x230-10GP, Руководство по установке

Страница: 36 / 102

Chapter 1: Overview
26
Twisted pair ports
The number of twisted pair ports supported by each x230 Series switch is:

8 ports: AT-x230-10GP and AT-x230-10GT

16 ports: AT-x230-18GP and AT-x230-18GT

24 ports: AT-x230-28GP and AT-x230-28GT
All ports are 10BASE-T, 100BASE-TX, and 1000BASE-T compliant. You
can set the port speeds and duplex modes either automatically with IEEE
802.3u Auto-Negotiation or manually with the management software.
The twisted pair ports feature 8-pin RJ45 connectors. For the port pinouts,
see “Connectors and port pinouts” on page 90.
The ports have a maximum operating distance of 100 m (328 feet).
The ports feature auto-MDI, which automatically configures the ports as
MDI or MDIX. This feature allows you to use straight-through twisted pair
cables regardless of the wiring configurations of the ports on the end
nodes.
Note
A switch port connected to an end node that is not using Auto-
Negotiation should not use Auto-Negotiation to set the speed and
duplex mode, as a duplex mode mismatch may occur. In this case,
disable Auto-Negotiation and set the port’s speed and duplex mode
manually.
Cable
requirements for
non-PoE ports
Cable requirements for the non-PoE twisted pair ports are in Table 1. .
T
ABLE
1. T
WISTED PAIR CABLE REQUIREMENTS FOR THE NON
-P
O
E
PORTS
Cable type
10
Mbps
100
Mbps
1000
Mbps
Cat 3: Standard TIA/EIA 568-B-compliant
Category 3 shielded or unshielded cabling
with 100 ohm impedance and a frequency
of 16 MHz
Yes Yes
No
Cat 5: Standard TIA/EIA 568-A-compliant
Category 5 shielded or unshielded cabling
with 100 ohm impedance and a frequency
of 100 MHz
Yes Yes
Yes