Cisco 815 Hardware Installation Manual page 66

Ethernet Network Cabling Guidelines
Ethernet Network Cabling Guidelines
Cisco 815 Integrated Services Router Hardware Installation Guide
B-2
Table B-1 Ethernet Cable Pinouts
RJ-45
1
Pin Signal
1 TX+
2 TX–
3 RX+
6 RX–
1. Pins 4, 5, 7, and 8 are not used for signaling.
Table B-2 describes some guidelines for creating Ethernet networks. Figures
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.
RJ-45
Direction Pin
—> 1
—> 2
<— 3
<— 6
10BASE-T
100 meters
5
4
1024
UTP Category 3, 4, or 5
Appendix B Cabling Specifications
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
UTP Category 5 or STP
OL-9558-01