Interface Numbering - Cisco 1800 Series Quick Start Manual

If the rommon 1> prompt appears, your system has booted in ROM monitor mode. For information on using ROM
monitor, refer to the "Troubleshooting and Maintenance" module in the online Cisco 1800 series software
configuration documentation at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/sw/index.htm
Verify the Front Panel LED Indications
The indicator LEDs described in Table 3 provide power, activity, and status information.
Table 3 LED Indicators
LED Color
SYS PWR Green
SYS ACT Green
CF Green
FDX (FE 0) Green
100 (FE 0) Green
Link (FE 0) Green
FDX (FE 1) Green
100 (FE 1) Green
Link (FE 1) Green
AIM Green
Verify the Hardware Configuration
Verify the router hardware configuration by entering the following commands:
• show version—Displays the system hardware version; the installed software version; the names and sources of configuration
files; the boot images; and the amount of installed DRAM, NVRAM, and flash memory.
• show diag—Lists and displays diagnostic information about the installed controllers, interface processors, and port
adapters. Typical examples are network modules, interface cards (WICs, VWICs, HWICs) and advanced integration
modules (AIMs).
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Interface Numbering

Each individual interface (port) on a Cisco 1841 router is identified by a number. A Cisco 1841 router contains the following
wide-area network (WAN) and local-area network (LAN) interface types:
• Two onboard Fast Ethernet LAN interfaces
• Two slots in which you can install WICs, VWICs (data only), and HWICs
The numbering format for the slots is
Router has successfully booted up and the software is functional. This LED blinks
while booting or in the ROM monitor.
Blinking when any packets are transmitted or received on any WAN or LAN, or when
monitoring system activity.
On when compact flash memory is busy. Do not remove CompactFlash memory card
when this light is on.
On indicates full-duplex operation. Off indicates half-duplex operation.
On indicates a 100-Mbps link. Off indicates a 10-Mbps link.
On when the router is correctly connected to a local Ethernet LAN through Ethernet
port 0.
On indicates full-duplex operation. Off indicates half-duplex operation.
On indicates a 100-Mbps link. Off indicates a 10-Mbps link.
On when the router is correctly connected to a local Ethernet LAN through Ethernet
port 1.
On indicates presence of an AIM in the internal AIM slot.
interface-type 0/slot-number/port-number . Table 4 summarizes the interface numbering.
Description Location
Front
Front
Back
Back
Back
Back
Back
Back
Back
Back
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