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Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 5 NPE-G1 Overview
Connection Equipment and Specifications
Note When connecting to an auxiliary port on a Cisco 7200 VXR router, the port will not function at baud
rates higher than 19.2k. If the baud rate on the connecting device is set higher than 19.2k, either
garbled text or nothing will be displayed on the screen.
Refer to Table 5-9 for a list of the pins used on the RJ-45-to-DB-25 adapters, used with an RJ-45 cable,
to connect terminals and modems to the Cisco 7200 series routers. The cable you use may be a roll-over
cable or a straight cable.
A roll-over cable can be detected by comparing the two modular ends of the cable. Holding the cables
in your hand, side-by-side, with the tab at the back, the wire connected to the pin on the outside of the
left plug should be the same color as the pin on the outside of the right plug. If your cable was purchased
from Cisco, pin 1 will be white on one connector, and pin 8 will be white on the other (a roll-over cable
reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5). (See
Figure 5-12.)
Figure 5-12 Identifying a Roll-Over Cable
Ta ble 5-9 Pinouts for the RJ-45-to-DB-25 Adapters
Adapter DTE M/F Pins
1
1. The female data terminal equipment (FDTE) adapter that is available from Cisco is labeled “Terminal”.
DCE M/F Pins MMOD Pins
2
2. The MMOD adapter that is available from Cisco is labeled “Modem”.
1 4 5 5
2 20 6 8
3 2 3 3
4 7 7 7
5 7 7 7
6 3 2 2
7 6 20 20
8 5 4 4
Pin 1
Pin 8
H3824
Pin 1 and pin 8
should be the
same color