Cisco 1760 - VPN Bundle Router Hardware Installation Manual page 78

Ethernet Network Cabling Guidelines
Ethernet Network Cabling Guidelines
Cisco 1760 Modular Access 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 for reducing radiated cable
emissions.
Table B-2 describes guidelines for creating Ethernet networks. Numbers might
vary, depending on the manufacturer of the network equipment.
Table B-2 Ethernet Cabling Guidelines
Specification
Maximum segment
length
Maximum number of
segments per network
1
Maximum hop count
Maximum number of
nodes per segment
Cable type required
1. Hop count = routing metric used to measure the distance between a source and a
destination.
Direction
—>
—>
<—
<—
10BASE-T
100 meters
5
4
1024
Category 3, 4, or 5
Appendix B Cabling Specifications
RJ-45 Pin
1
2
3
6
100BASE-TX
100 meters
With Class I
•
repeaters: 1
With Class II
•
repeaters: 2
With Class I
•
repeaters: none
With Class II
•
repeaters: 1
1024
Category 5
78-13342-03