Table Of Contents
Ethernet Network Cabling Guidelines
Cabling Specifications
This appendix describes cables and cabling guidelines that should be used with the Cisco 1400 series router and contains the following sections:
•
Ethernet Network Cabling Guidelines
ATM-25 Cable
The green RJ-45-to-RJ-45 ATM-25 cable connects the Cisco 1401 router through a DSL modem to the ADSL line. This cable must be a Category 3, 4, or 5 unshielded twisted-pair (UTP) cable. The cable that came with your router is Category 5 and is shown in . The signal associated with each pin is described in .
Figure C-1 ATM-25 Cable
Table C-1 ATM-25 Cable Pinouts
Note
ADSL Cable
The purple RJ-11-to-RJ-11 ADSL cable connects the Cisco 1407 and Cisco 1417 routers to the ADSL line. This cable must be a Category 3, 4, or 5 unshielded twisted-pair (UTP) cable. The cable that came with your router is Category 5 and is shown in . Cable pinouts are described in . Pins 2 and 5 are used for data.
Figure C-2 ADSL Cable
Table C-2 ADSL Cable Pinouts
22
<—>
2
3
<—>
3
4
<—>
4
5
<—>
5
1 Pins 1 and 6 are not used.
2 Pins 2 and 5 are used for data.
POTS Crossover Cable
The purple (with a blue stripe) RJ-11-to-RJ-11 POTS crossover cable connects the Cisco 1407 and Cisco 1417 routers to POTS splitters that use pins 3 and 4 for data. (The Cisco 1417 router uses pins 2 and 5 for data.) This cable can be ordered from Cisco. If you provide your own cable, it must be a Category 3, 4, or 5 unshielded twisted-pair (UTP) cable. The orderable Cisco cable is Category 5 and is shown in . Cable pinouts are described in .
Figure C-3 POTS Crossover Cable
Table C-3 POTS Crossover Cable Pinouts
ATM Loopback Plug
An ATM loopback plug is used when performing a loopback test on the Cisco 1401 router. The loopback plug is shown in and plug pinouts are described in .
Figure C-4 ATM Loopback Plug
Table C-4 ATM Loopback Plug Pinouts
Ethernet Cable
This section describes the yellow RJ-45-to-RJ-45 Ethernet cable used to connect the router to your local Ethernet network. This cable is shipped with the router. The signal associated with each pin is described in .
Table C-5 Straight-Through Ethernet Cable
Pin1
Pin1
TX+
—>
1
2
TX-
—>
2
3
RX+
<—
3
6
RX-
<—
6
1 Pins 4, 5, 7, and 8 are not used.
Pinouts
Console Cable
and Adapters
A console cable kit is provided with your router. Use this kit when connecting your router to a PC or terminal.
The console cable kit contains these items:
•
•
•
describes the wiring for the console port, the console cable, and both adapters. Figure C-5 illustrates how to identify the console cable, which is also referred to as a rollover cable.
Table C-6
Console Cable and Adapter Pinouts
Figure C-5 Identifying a Rollover Cable
Ethernet Network Cabling Guidelines
describes guidelines to follow when creating Ethernet networks. Exact figures might vary depending on the manufacturer of the network equipment.
Table C-7 Ethernet Cabling Guidelines
Maximum segment length
100 meters
Maximum number of segments per network
5
Maximum hop count1
4
Maximum number of nodes per segment
1024
Cable type supported
UTP
Category 3, 4, or 5
1 Hop count = Routing metric used to measure the distance between a source and a destination.
