Cisco Systems 1721 Router Memory, LED Label, Color, Description, 4 Front Panel LEDs continued

Chapter 1 Cisco 1721 Router Overview

		Router Memory
Table 1-4 Front Panel LEDs (continued)
LED Label	Color	Description
WIC1
ACT/CH0	Green	Serial and DSU/CSU cards—Blinks when data is being sent to or
		received from the port on the card in the WIC1 slot.
		ISDN cards—On solid when the first ISDN B channel is up for the card
		in the WIC1 slot.
		2-port serial cards—Blinks when data is being sent to or received from
		the first port on the 2-port card in the WIC1 slot.
ACT/CH1	Green	Serial and DSU/CSU cards—Remains off.
		ISDN cards—On solid when the second ISDN B channel is up for the
		card in the WIC1 slot.
		2-port serial cards—Blinks when data is being sent to or received from
		the second port on the 2-port card in the WIC1 slot.
ETH
ACT	Green	Blinks when there is network activity on the Ethernet port.
COL	Yellow	Blinks when there are packet collisions on the local Ethernet network.

Router Memory

This section describes the types of memory stored in the router and how to find out how much of each type of memory is stored in the router.

For instruction on how to upgrade memory in the router, see Appendix C, “Installing and Upgrading Memory and Virtual Private Network Modules.”

	Cisco 1721 Router Hardware Installation Guide
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