Chapter 3 Installing the Cisco 12404 Internet Router
Connecting to the Console Port and Auxiliary Ports
3-27
Cisco 12404 Internet Router Installation and Configuration Guide
OL-11636-01
Figure 3-15
Straight-Through Cable Pinout—Connecting MDI Ethernet Port
to MDI-X Wiring
Figure 3-16
Crossover Cable Pinout (for Connecting Two PRPs)
lists the cabling specifications for 100-Mbps transmission over
unshielded twisted-pair (UTP) cables.
Note
The transmission speed of the Ethernet ports is auto-sensing by default and is user
configurable.
MDI-X wiring
MDI wiring
1 TxD+
2 TxD–
3 RxD+
6 RxD–
1 RxD+
2 RxD–
3 TxD+
6 TxD–
H11007
PRP
1 TxD+
2 TxD–
3 RxD+
6 RxD–
1 TxD+
2 TxD–
3 RxD+
6 RxD–
75431
PRP
Table 3-8
Specifications and Connection Limits for 100-Mbps
Transmission
Parameter
RJ-45
Cable specification
Category 5
1
UTP, 22 to 24 AWG
2
1.
EIA/TIA-568 or EIA-TIA-568 TSB-36 compliant. Not supplied by Cisco.
2.
AWG = American Wire Gauge. This gauge is specified by the EIA/TIA-568 standard.
Cable length (max)
—
Segment length (max)
328 feet (100 m) for 100BASE-TX
Network length (max)
656 feet (200 m)
3
(with 1 repeater)
todd.book Page 27 Tuesday, November 27, 2007 6:02 PM