Cisco Systems 815 사용자 설명서
Appendix B Cabling Specifications
Ethernet Network Cabling Guidelines
B-2
Cisco 815 Integrated Services Router Hardware Installation Guide
OL-9558-01
Ethernet Network Cabling Guidelines
describes some guidelines for creating Ethernet networks. Figures
might vary, depending on the manufacturer of the network equipment.
Table B-1
Ethernet Cable Pinouts
RJ-45
Pin
Pin
1
1.
Pins 4, 5, 7, and 8 are not used for signaling.
Signal
Direction
RJ-45
Pin
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
length
100 meters
100 meters
Maximum number of
segments per network
segments per network
5
•
With Class I
repeaters: 1
repeaters: 1
•
With Class II
repeaters: 2
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
repeaters: none
•
With Class II
repeaters: 1
repeaters: 1
Maximum number of
nodes per segment
nodes per segment
1024
1024
Cable type required
UTP Category 3, 4, or 5
UTP Category 5 or STP