Led Indicators - Cisco 1841 - 3G Bundle Router Hardware Installation Manual

Hardware Features
•
Table 2-3
Table 2-3
Description
SDRAM
Flash memory
Boot/NVRAM
SDRAM and the flash memory are user-upgradable, but the boot/NVRAM is permanently soldered to
Note
the router's motherboard and is not upgradable.
Table 2-4
Description
DRAM
Flash memory

LED Indicators

Table 2-5
or chassis, but not in the interface cards.
For descriptions of the LEDs in the interface cards, see
Table 2-5
LED
SYS PWR
SYS ACT
CF
FDX (FE 0/0)
100 (FE 0/0)
Link (FE 0/0)
FDX (FE 0/1)
Cisco 1800 Series Routers (Modular) Hardware Installation Guide
2-6
Boot/NVRAM—Serves two functions. It stores the ROM monitor, which allows you to boot an
operating system software image from flash memory. It also stores the system configuration file and
the virtual configuration register.
lists the memory specifications for Cisco 1800 series routers.
Router Memory Specifications for the Cisco 1841 Router
Specification
128 MB, expandable to 384 MB; default is 128 MB
32, 64, or 128 MB; default is 32MB
2/4 MB flash memory
Router Memory Specifications for the Cisco 1861 ISR
Specification
512 MB
128 MB
summarizes the LED indicators for the Cisco 1841 router that are located in the router bezel
Summary of Cisco 1800 Series LED Indicators
Color Description
Green Router has successfully booted and the software is functional.
This LED blinks while booting or in the ROM monitor.
Green Blinking when any packets are transmitted or received on any
WAN or LAN, or when monitoring system activity.
Green On when flash memory is busy. Do not remove the CompactFlash
memory card when this light is on.
Green On indicates full-duplex operation. Off indicates half-duplex
operation.
Green On indicates a 100-Mbps link. Off indicates a 10-Mbps link.
Green On when the router is correctly connected to a local Ethernet
LAN through Ethernet port 0.
Green On indicates full-duplex operation. Off indicates half-duplex
operation.
Chapter 2 Overview of Cisco 1800 Series Routers (Modular)
Cisco Interface Card Installation Guide.
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