Cisco 1721 - VPN Security Router Bundle Посібник з встановлення обладнання - Сторінка 7

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Chapter 1

Cisco 1721 Router Overview

Table 1-4

Front Panel LEDs (continued)

LED Label

Color

WIC1

ACT/CH0

Green

ACT/CH1

Green

ETH

ACT

Green

COL

Yellow

Router Memory

78-13834-02

Description

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.

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.

Blinks when there is network activity on the Ethernet port.

Blinks when there are packet collisions on the local Ethernet network.

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

"Installing and Upgrading Memory and Virtual Private Network Modules."

Cisco 1721 Router Hardware Installation Guide

Router Memory

Appendix C,

1-7