Cisco 1760 - VPN Bundle Router, Руководство по установке оборудования

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Appendix B Cabling Specifications
Ethernet Network Cabling Guidelines
B-2
Cisco 1760 Modular Access Router Hardware Installation Guide
78-13342-03
Ethernet Network Cabling Guidelines
Table B-2 describes guidelines for creating Ethernet networks. Numbers might
vary, depending on the manufacturer of the network equipment.
Table B-1 Straight-Through Ethernet Cable (RJ-45-to-RJ-45) Pinouts
RJ-45 Pin
1
1. Pins 4, 5, 7, and 8 are not used for signaling but for reducing radiated cable
emissions.
Signal Direction RJ-45 Pin
1 TX+ —> 1
2 TX– —> 2
3 RX+ <— 3
6 RX– <— 6
Table B-2 Ethernet Cabling Guidelines
Specification 10BASE-T 100BASE-TX
Maximum segment
length 100 meters 100 meters
Maximum number of
segments per network 5 • With Class I
repeaters: 1
•
With Class II
repeaters: 2
Maximum hop count
1
1. Hop count = routing metric used to measure the distance between a source and a
destination.
4
•
With Class I
repeaters: none
• With Class II
repeaters: 1
Maximum number of
nodes per segment 1024 1024
Cable type required Category 3, 4, or 5 Category 5