Verifying Installation - Cisco 761M Installation Manual

Verifying Installation

Verifying Installation
When the router is powered on, it is automatically booted, and the router attempts to
establish links to the LAN and the WAN.
Compare the LED states with known activity. For example, all LEDs should blink at least
once during the boot process, which takes a few minutes. Once the router is booted, you
can verify your connections by using the LEDs.
The LAN, CH1, and CH2 LEDs each have companion RDX and TDX LEDs. The RDX and
TDX LEDs indicate traffic on the respective channels. Using an application such as a Web
browser, verify that the router is receiving data from the WAN. When you access a Web
page on the network, the router indicates the transfer of data by turning on the LAN LED
and blinking the companion RDX and TDX LEDs. The CH1 LED also turns on and the
companion RDX and TDX LEDs blink. The CH2 LED might turn on, depending on the
amount of traffic. If the LEDs do not behave as expected, check the physical connections.
Brief descriptions of the LED states as they relate to the physical connections are provided
in Table 3-1. All the LEDs are listed, but each router model has a different subset of LEDs.
If your connections are correct and the LEDs are not in the correct state, it might be because
the router or PC is not yet configured. If your router is configured and the states are not
correct, see Chapter 5, "Troubleshooting Cisco 700 Series Routers."
Table 3-1
LED
RDY
NT1
LINE
LAN
3-10
Cisco 700 Series Router Installation Guide
Verifying the Connections
Connection
Power
ISDN U port
ISDN U or S/T port
Ethernet
Normal Pattern
On when the router is powered on.
Off when the router is powered off.
On when connected.
Blinks when not connected.
On when connected.
Off when not connected.
On for 1 minute after boot.
Off if there is no traffic on the LAN for 1 minute.