Contents
v
Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Setting the Privilege Level for a Command 3-23
Changing the Default Privilege Level for Lines 3-23
Logging In to a Privilege Level 3-24
Exiting a Privilege Level 3-24
Displaying the Password, Access Level, and Privilege Level Configuration 3-24
Recovering a Lost Enable Password 3-25
Modifying the Supervisor Engine Startup Configuration 3-25
Understanding the Supervisor Engine Boot Configuration 3-25
Understanding the ROM Monitor 3-26
Configuring the Software Configuration Register 3-26
Modifying the Boot Field and Using the boot Command 3-27
Modifying the Boot Field 3-28
Verifying the Configuration Register Setting 3-29
Specifying the Startup System Image 3-30
Flash Memory Features 3-31
Security Precautions 3-31
Configuring Flash Memory 3-31
Controlling Environment Variables 3-31
Resetting a Switch to Factory Default Settings 3-32
CHAPTER
4Administering the Switch 4-1
Managing the System Time and Date 4-1
System Clock 4-2
Understanding Network Time Protocol 4-2
Configuring NTP 4-3
Default NTP Configuration 4-4
Configuring NTP Authentication 4-4
Configuring NTP Associations 4-6
Configuring NTP Broadcast Service 4-7
Configuring NTP Access Restrictions 4-8
Configuring the Source IP Address for NTP Packets 4-10
Displaying the NTP Configuration 4-11
Configuring Time and Date Manually 4-11
Setting the System Clock 4-11
Displaying the Time and Date Configuration 4-12
Configuring the Time Zone 4-12
Configuring Summer Time (Daylight Saving Time) 4-13
Configuring a System Name and Prompt 4-14
Configuring a System Name 4-15