Cisco Systems Cisco 837 manual LED Functions, Led

Chapter 1 Product Overview

Router Overview

LED Functions

Table 1-2summarizes the functions of the LEDs on the Cisco 837 router and the SOHO 97 router.

Table 1-2 Functions of LEDs on the Cisco 837 Router and SOHO 97 Router

LED	Color	Function
PWR_OK	Green	On when DC power is being supplied to the router. The light blinks if an error
		occurs during boot-up.
ADSL_CD	Green	On when the ADSL carrier detects status and connects to Digital Subscriber
		Line Access Multiplexer (DSLAM) successfully.
ADSL_RxD	Green	Blinks when the ADSL receives data.
ADSL_TxD	Green	Blinks when the ADSL transmits data. Off when no data is being uploaded.
E1 Status	Green	On when Ethernet 1 connects to the Ethernet interface successfully. Blinks
		when Ethernet 1 receives or sends data, or when data passes through
		Ethernet 1.
E2 Status	Green	On when Ethernet 2 connects to the Ethernet interface successfully. Blinks
		when Ethernet 2 receives or sends data, or when data passes through
		Ethernet 2.
E3 Status	Green	On when Ethernet 3 connects to the Ethernet interface successfully. Blinks
		when Ethernet 3 receives or sends data, or when data passes through
		Ethernet 3.
E4 Status	Green	On when Ethernet 4 connects to the Ethernet interface successfully. Blinks
		when Ethernet 4 receives or sends data, or when data passes through
		Ethernet 4.
LAN_RxD	Green	Blinks when the LAN port receives data from the WAN port.
LAN_TxD	Green	Blinks when the LAN port transmits data to the WAN port.

	Cisco 837 Router and SOHO 97 Router Hardware Installation Guide
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