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Physical and Functional Overviews
PCMCIA Slots
The GRP has two PCMCIA slots available. Either slot can support a Flash memory card or
an input/output (I/O) device as long as the device requires only +5 VDC. The GRP supports
Type 1 and Type 2 devices; it does not support +3.3 VDC PCMCIA devices. Each PCMCIA
slot has an ejector button for ejecting a PCMCIA card from the slot.
Asynchronous Serial Ports
Two asynchronous serial ports on the GRP, the console and auxiliary ports, allow you to
connect external devices to monitor and manage the system. The console port is an
Electronics Industries Association/Telecommunications Industry Association
(EIA/TIA)-232 receptacle (female) that provides a data circuit-terminating equipment
(DCE) interface for connecting a console terminal.
Note
as a standard by the Electronic Industries Association (EIA) and Telecommunications
Industry Association (TIA).
The auxiliary port is an EIA/TIA-232 plug (male) that provides a data terminal equipment
(DTE) interface; the auxiliary port supports flow control and is often used to connect a
modem, a channel service unit (CSU), or other optional equipment for Telnet management.
Ethernet Port
The 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 10BaseT (10 Mbps) or IEEE 802.3u 100BaseTX (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.
1-12 Cisco 12012 Gigabit Switch Router Installation and Configuration Guide
EIA/TIA-232 was known as recommended standard RS-232 before its acceptance
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Troubleshooting
