Name: HP ProCurve 2510-24
Brand: HP
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9-24

Time Protocols

SNTP Messages in the Event Log

If an SNTP time change of more than three seconds occurs, the switch’s event

log records the change. SNTP time changes of less than three seconds do not

appear in the Event Log.

Management and Configuration Guide for the ProCurve Series 2510 Switches1
Title Page3
Copyright and Disclaimer Notices4
Contents5
Product Documentation17
Feature Index18
1.Getting Started21
- Contents21
- Introduction22
- Conventions22
- Sources for More Information24
- Need Only a Quick Start?26
  - IP Addressing26
  - To Set Up and Install the Switch in Your Network26
2.Selecting a Management Interface27
- Contents27
- Overview28
- Advantages of Using the Menu Interface29
- Advantages of Using the CLI30
- Advantages of Using the Web Browser Interface31
- Advantages of Using ProCurve Manager or ProCurve Manager Plus32
3.Using the Menu Interface35
- Contents35
- Overview36
- Starting and Ending a Menu Session37
  - How To Start a Menu Interface Session38
  - How To End a Menu Session and Exit from the Console:39
- Main Menu Features41
- Screen Structure and Navigation42
- Rebooting the Switch45
- Menu Features List48
- Where To Go From Here49
4.Using the Command Line Interface (CLI)51
- Contents51
- Overview52
- Accessing the CLI52
- Using the CLI52
- CLI Control and Editing67
5.Using the Web Browser Interface69
- Contents69
- Overview70
- General Features71
- Starting a Web Browser Interface Session with the Switch72
  - Using a Standalone Web Browser in a PC or UNIX Workstation72
  - Using ProCurve Manager (PCM) or ProCurve Manager Plus (PCM+)73
- Tasks for Your First Web Browser Interface Session75
- Support/Mgmt URLs Feature80
- Status Reporting Features84
6.Switch Memory and Configuration95
- Contents95
- Overview96
- Overview of Configuration File Management96
- Using the CLI To Implement Configuration Changes99
- Using the Menu and Web Browser Interfaces To Implement Configuration Changes102
  - Configuration Changes Using the Menu Interface102
  - Configuration Changes Using the Web Browser Interface105
- Using Primary and Secondary Flash Image Options106
7.Interface Access and System Information117
- Contents117
- Overview118
- Interface Access: Console/Serial Link, Web, and Telnet119
  - Menu: Modifying the Interface Access120
  - CLI: Modifying the Interface Access121
- Denying Interface Access by Terminating Remote Management Sessions126
- System Information127
8.Configuring IP Addressing133
- Contents133
- Overview134
- IP Configuration135
- IP Preserve: Retaining VLAN-1 IP Addressing Across Configuration File Downloads148
  - Operating Rules for IP Preserve148
9.Time Protocols153
- Contents153
- Overview154
  - TimeP Time Synchronization154
  - SNTP Time Synchronization154
- Overview: Selecting a Time Synchronization Protocol or Turning Off Time Protocol Operation155
  - General Steps for Running a Time Protocol on the Switch155
  - Disabling Time Synchronization156
- SNTP: Viewing, Selecting, and Configuring156
  - Menu: Viewing and Configuring SNTP157
  - CLI: Viewing and Configuring SNTP160
- TimeP: Viewing, Selecting, and Configuring166
  - Menu: Viewing and Configuring TimeP167
  - CLI: Viewing and Configuring TimeP168
- SNTP Unicast Time Polling with Multiple SNTP Servers173
- SNTP Messages in the Event Log176
10.Port Status and Basic Configuration177
- Contents177
- Overview178
- Viewing Port Status and Configuring Port Parameters178
- QoS Pass-Through Mode192
- Using Friendly (Optional) Port Names200
11.Port Trunking207
- Contents207
- Overview208
- Port Status and Configuration208
12.Configuring for Network Management Applications233
- Contents233
- Using SNMP Tools To Manage the Switch235
- LLDP (Link-Layer Discovery Protocol)257
A.File Transfers289
- Contents289
- Overview290
- Downloading Switch Software290
- Troubleshooting TFTP Downloads305
- Transferring Switch Configurations306
- Copying Diagnostic Data to a Remote Host, PC, or Unix Workstation309
B.Monitoring and Analyzing Switch Operation313
- Contents313
- Overview315
- Status and Counters Data316
- Port and Static Trunk Monitoring Features335
- Locating a Device341
C.Troubleshooting343
- Contents343
- Overview345
- Troubleshooting Approaches345
- Chassis Over-Temperature Detection347
- Browser or Telnet Access Problems349
- Unusual Network Activity351
- Using Logging To Identify Problem Sources365
  - Event Log Operation365
  - Debug and Syslog Operation369
- Diagnostic Tools376
- Restoring the Factory-Default Configuration385
- Restoring a Flash Image386
D.MAC Address Management389
- Contents389
- Overview390
- Determining MAC Addresses in the Switch390
  - Menu: Viewing the Switch’s MAC Addresses391
  - CLI: Viewing the Port and VLAN MAC Addresses392
- Viewing the MAC Addresses of Connected Devices394
E.Daylight Savings Time on ProCurve Switches397
- Configuring Daylight Savings Time397
  - Symbols401
  - Numerics401
  - A401
  - B401
  - C401
  - D402
  - E403
  - F403
  - G403
  - H403
  - I403
  - J403
  - K404
  - L404
  - M405
  - N405
  - O406
  - P406
  - Q407
  - R407
  - S407
  - T409
  - U409
  - V410
  - W410
  - X410
Index401
Back Cover412

HP ProCurve 2510-24 User Manual

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Brand	HP
Model	ProCurve 2510-24
Category	Switch
Language	English