x600 Series Layer 3 Gigabit Ethernet Switches Installation Guide
The cabling requirements for a 10/100/1000Base-T port are:
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.
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.
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.
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.
The port pinout information is listed in Appendix A, Technical Specifications.
When operating at 10 or 100 Mbps in the MDI configuration, refer to the specifications in Table 14 on page 104.
When operating at 10 or 100 Mbps in the MDI-X configuration, refer to the specifications in Table 15 on page 104.
When a 10/100/1000Base-T port operates at 1000 Mbps, refer to the specifications in Table 16 on page 105.