Ethernet Network Cabling Guidelines - Cisco 1751V Hardware Installation Manual

Ethernet Network Cabling Guidelines

Ethernet Network Cabling Guidelines
Cisco 1751 Router Hardware Installation Guide
B-2
Table B-1 Straight-Through Ethernet Cable (RJ-45-to-RJ-45) Pinouts
1
RJ-45 Pin Signal
1 TX+
2 TX–
3 RX+
6 RX–
1. Pins 4, 5, 7, and 8 are not used for signaling but to reduce radiated cable emissions.
Table B-2 describes guidelines for creating Ethernet networks. Figures might
vary, depending on the manufacturer of the network equipment.
Table B-2 Ethernet Cabling Guidelines
Specification 10BaseT
Maximum 100 meters
segment length
Maximum number 5
of segments per
network
Appendix B
Direction RJ-45 Pin
—> 1
—> 2
<— 3
<— 6
100BaseTX
100 meters
• With Class I
repeaters:
1
With Class II
•
repeaters:
2
Cabling Specifications
78-11258-04