Connecting to 1000base-t devices, Figure b-1 – Cisco 3030 User Manual
Cisco Catalyst Blade Switch 3030 Hardware Installation Guide
Appendix B Connector and Cable Specifications
When connecting the ports to 10BASE-T- and 100BASE-TX-compatible devices, such as switches or
repeaters, you can use a two or four twisted-pair, crossover cable.
shows the two twisted-pair,
crossover cable schematics.
shows the four twisted-pair, crossover cable schematics.
You can use Category 3, 4, or 5 cabling when connecting to 10BASE-T-compatible devices. You must
use Category 5 cabling when connecting to 100BASE-TX-compatible devices.
Connecting to 1000BASE-T Devices
When connecting the ports to 1000BASE-T devices, such as servers, workstations, and routers, you must
use a four twisted-pair, Category 5, straight-through cable wired for 10BASE-T, 100BASE-TX, and
shows the straight-through cable schematics.
When connecting the ports to other devices, such as switches or repeaters, you must use a four
twisted-pair, Category 5, crossover cable.
shows the crossover cable schematics.
Be sure to use a four twisted-pair, Category 5 cable when connecting to a 1000BASE-T-compatible
Use a straight-through cable to connect two ports only when one port is designated with an X. Use a
crossover cable to connect two ports when both ports are designated with an X or when both ports do
not have an X.
10/100/1000 Port Pinouts
4 5 6 7 8