Specifications

Contents
viii
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
78-11380-07
Using the CLI to Manage Switch Clusters 7-27
Catalyst 1900 and Catalyst2820 CLI Considerations 7-27
Using SNMP to Manage Switch Clusters 7-28
CHAPTER 8 Administering the Switch 8-1
Managing the System Time and Date 8-1
Understanding the System Clock 8-1
Understanding Network Time Protocol 8-2
Configuring NTP 8-3
Default NTP Configuration 8-4
Configuring NTP Authentication 8-4
Configuring NTP Associations 8-5
Configuring NTP Broadcast Service 8-6
Configuring NTP Access Restrictions 8-7
Configuring the Source IP Address for NTP Packets 8-9
Displaying the NTP Configuration 8-10
Configuring Time and Date Manually 8-10
Setting the System Clock 8-11
Displaying the Time and Date Configuration 8-11
Configuring the Time Zone 8-12
Configuring Summer Time (Daylight Saving Time) 8-13
Configuring a System Name and Prompt 8-15
Default System Name and Prompt Configuration 8-15
Configuring a System Name 8-15
Configuring a System Prompt 8-16
Understanding DNS 8-16
Default DNS Configuration 8-17
Setting Up DNS 8-17
Displaying the DNS Configuration 8-18
Creating a Banner 8-18
Default Banner Configuration 8-18
Configuring a Message-of-the-Day Login Banner 8-19
Configuring a Login Banner 8-20
Managing the MAC Address Table 8-20
Building the Address Table 8-21
MAC Addresses and VLANs 8-21
Default MAC Address Table Configuration 8-22
Changing the Address Aging Time 8-22
Removing Dynamic Address Entries 8-23