Specifications

Contents
vii
Catalyst 2970 Switch Software Configuration Guide
78-15462-03
Configuring the Time Zone 6-13
Configuring Summer Time (Daylight Saving Time) 6-14
Configuring a System Name and Prompt 6-16
Default System Name and Prompt Configuration 6-16
Configuring a System Name 6-16
Configuring a System Prompt 6-17
Understanding DNS 6-17
Default DNS Configuration 6-18
Setting Up DNS 6-18
Displaying the DNS Configuration 6-19
Creating a Banner 6-19
Default Banner Configuration 6-19
Configuring a Message-of-the-Day Login Banner 6-20
Configuring a Login Banner 6-21
Managing the MAC Address Table 6-22
Building the Address Table 6-22
MAC Addresses and VLANs 6-23
Default MAC Address Table Configuration 6-23
Changing the Address Aging Time 6-23
Removing Dynamic Address Entries 6-24
Configuring MAC Address Notification Traps 6-24
Adding and Removing Static Address Entries 6-26
Configuring Unicast MAC Address Filtering 6-27
Displaying Address Table Entries 6-28
Managing the ARP Table 6-29
CHAPTER 7 Configuring Switch-Based Authentication 7-1
Preventing Unauthorized Access to Your Switch 7-1
Protecting Access to Privileged EXEC Commands 7-2
Default Password and Privilege Level Configuration 7-2
Setting or Changing a Static Enable Password 7-3
Protecting Enable and Enable Secret Passwords with Encryption 7-4
Disabling Password Recovery 7-5
Setting a Telnet Password for a Terminal Line 7-6
Configuring Username and Password Pairs 7-7
Configuring Multiple Privilege Levels 7-8
Setting the Privilege Level for a Command 7-8
Changing the Default Privilege Level for Lines 7-9
Logging into and Exiting a Privilege Level 7-10