Allied Telesis x610 Series Layer 3 - Manual (Page 30)

Chapter 1: Overview
30
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 range that extends to 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 range
that extends to 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 range that extends to 100 MHz.
Auto-MDI/
MDI-X
The 10/100/1000Base-T 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 feature allows you to use a
straight-through twisted pair cable when connecting any network device to
a port on the switch.
Disabling Auto-Negotiation on a port and setting the speed and duplex
mode manually also disables the auto-MDI/MDI-X feature. A port where
Auto-Negotiation has been disabled defaults to MDI-X. Disabling
Auto-Negotiation may require manually configuring a port’s MDI/MDI-X
setting or using a crossover cable.
Port Pinouts The port pinout information is listed in Appendix A, Technical
Specifications.
ˆ
When operating at 10 or 100 Mbps in the MDI configuration, refer to
the specifications in Table 19 on page 116.
ˆ
When operating at 10 or 100 Mbps in the MDI-X configuration, refer to
the specifications in Table 20 on page 116.
ˆ
When a 10/100/1000Base-T port operates at 1000 Mbps, refer to the
specifications in Table 21 on page 117.