AppendixA Technical Specifications
Product Architecture
A-12
Cisco 12404 Internet Router Installation and Configuration Guide
OL-11636-01
Note EIA/TIA-232 was known as recommended standard RS-232 before its acceptance
as a standard by the EIA/TIA.
The auxiliary port is an EIA/TIA-232 plug (male) that provides a data terminal
equipment interface. The auxiliary port supports flow control and can be used to
connect a modem, a channel service unit (CSU), or other optional equipment for
Telnet management.
Ethernet PortThe GRP has one Ethernet port available, using one of the following two
connection types:
•RJ-45 receptacle—An 8-pin media dependent interface (MDI) RJ-45
receptacle for either IEEE 802.3 10BASE T (10 Mbps) or IEEE 802.3u
100BASE TX (100 Mbps) Ethernet connections.
•MII receptacle—A 40-pin media independent interface (MII) receptacle that
provides additional flexibility in Ethernet connections. The pinout of this
standard 40-pin receptacle is defined by the IEEE 802.3u standard.
Note The RJ-45 and MII receptacles on the GRP represent two physical
connection options for one Ethernet interface; therefore, you can use
either the MDI RJ-45 connection or the MII connection, but not both at
the same time.
Performance Route ProcessorThis section provides an overview of the PRP (Figure A-3) and its use as the main
system processor for the Cisco 12404 router.
This section provides information on the following PRP functionality.
•PRP memory
•System status LEDs
•Soft reset switch
•PCMCIA slots