Cisco 12404 Installation And Configuration Manual page 36

Route Processors
Ethernet Port
Cisco 12404 Internet Router Installation and Configuration Guide
1-12
The GRP has one Ethernet port which uses one of the following two port
connection types:
RJ-45 port—Is an 8-pin MDI RJ-45 port for either IEEE 802.3 10BASE-T
•
(10 Mbps) or IEEE 802.3u 100BASE-TX (100 Mbps) Ethernet connections
(Figure 1-3).
Figure 1-3 GRP RJ-45 Connector
8 7 6 5 4 3 2 1
RJ-45 connector
MII receptacle—Is a 40-pin media independent interface (MII) port that
•
provides additional flexibility in Ethernet connections
pinout of this standard 40-pin port is defined by the IEEE 802.3u standard in
Appendix A of this guide
Figure 1-4 GRP MII Ethernet Receptacle
Jackscrew
(Figure 1-5).
Pin 1
Pin 21
Chapter 1 Product Overview
(Figure 1-4). The
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