Specifications

Contents
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Catalyst 2970 Switch Software Configuration Guide
78-15462-03
Discovery Through Different VLANs 5-7
Discovery Through Different Management VLANs 5-8
Discovery of Newly Installed Switches 5-9
HSRP and Standby Cluster Command Switches 5-10
Virtual IP Addresses 5-11
Other Considerations for Cluster Standby Groups 5-11
Automatic Recovery of Cluster Configuration 5-12
IP Addresses 5-13
Host Names 5-13
Passwords 5-14
SNMP Community Strings 5-14
TACACS+ and RADIUS 5-14
Access Modes in CMS 5-15
LRE Profiles 5-15
Availability of Switch-Specific Features in Switch Clusters 5-15
Creating a Switch Cluster 5-15
Enabling a Cluster Command Switch 5-16
Adding Cluster Member Switches 5-16
Creating a Cluster Standby Group 5-18
Verifying a Switch Cluster 5-20
Using the CLI to Manage Switch Clusters 5-21
Catalyst 1900 and Catalyst2820 CLI Considerations 5-21
Using SNMP to Manage Switch Clusters 5-21
CHAPTER 6 Administering the Switch 6-1
Managing the System Time and Date 6-1
Understanding the System Clock 6-2
Understanding Network Time Protocol 6-2
Configuring NTP 6-4
Default NTP Configuration 6-4
Configuring NTP Authentication 6-5
Configuring NTP Associations 6-6
Configuring NTP Broadcast Service 6-7
Configuring NTP Access Restrictions 6-8
Configuring the Source IP Address for NTP Packets 6-10
Displaying the NTP Configuration 6-11
Configuring Time and Date Manually 6-11
Setting the System Clock 6-12
Displaying the Time and Date Configuration 6-12