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IronPort Systems 4108GL User Manual

Page 10

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IP Addressing with Multiple VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

IP Addressing in a Stacking Environment . . . . . . . . . . . . . . . . . . . . . . . 7-5

Menu: Configuring IP Address, Gateway, and Time-To-Live (TTL) . . 7-5

CLI: Configuring IP Address, Gateway, Time-To-Live (TTL), and
Timep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Web: Configuring IP Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

How IP Addressing Affects Switch Operation . . . . . . . . . . . . . . . . . . . . 7-9

Globally Assigned IP Network Addresses . . . . . . . . . . . . . . . . . . . . . . 7-14

Time Protocols

Chapter Contents

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Overview

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

TimeP Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

SNTP Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Overview: Selecting a Time Synchronization Protocol or Turning Off
Time Protocol Operation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

General Steps for Running a Time Protocol on the Switch: . . . . . . . . 8-3

Disabling Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

SNTP: Viewing, Selecting, and Configuring

. . . . . . . . . . . . . . . . . . . . . 8-4

Menu: Viewing and Configuring SNTP . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

CLI: Viewing and Configuring SNTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8

TimeP: Viewing, Selecting, and Configuring

. . . . . . . . . . . . . . . . . . . . 8-13

Menu: Viewing and Configuring TimeP . . . . . . . . . . . . . . . . . . . . . . . . 8-14

CLI: Viewing and Configuring TimeP . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16

SNTP Unicast Time Polling with Multiple SNTP Servers

. . . . . . . . 8-20

Address Prioritization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21

Adding and Deleting SNTP Server Addresses . . . . . . . . . . . . . . . . . . . 8-21

Menu Interface Operation with Multiple SNTP Server Addresses Configured
8-23

SNTP Messages in the Event Log

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23

Using Passwords and TACACS+ To Protect Against
Unauthorized Access

Contents

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1