HP 4108GL - Timep: Viewing, Selecting, and Configuring

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Time Protocols

TimeP: Viewing, Selecting, and Configuring

Time Protocols

Figure 8-11. Example of Disabling Time Synchronization by Disabling the SNTP Mode

TimeP: Viewing, Selecting, and

Configuring

Even though the Time Sync Mode is set to Sntp,

time synchronization is disabled because no

sntp has disabled the SNTP Mode parameter.

TimeP Feature Default Menu CLI Web

view the Timep time synchronization configuration n/a page 8-14 page 16 —

select Timep as the time syncronization method TIMEP page 13 pages 17 ff. —

disable time synchronization timep page 15 page 19 —

enable the Timep mode Disabled —

DHCP — page 15 page 17 —

manual — page 15 page 18 —

none/disabled — page 15 page 20 —

change the SNTP poll interval 720 minutes page 16 page 19 —

Main Page

Table of Contents7
- Preface5
- Monitoring and Analyzing Switch Operation15
Table of Contents16
- Selecting a Management Interface18
- Overview18
- Understanding Management Interfaces18
- Advantages of Using the Menu Interface19
- Advantages of Using the CLI20
- Advantages of Using the HP Web Browser Interface21
- Advantages of Using HP Toptools for Hubs & Switches22
2 Using the Menu Interface25
- Default Chapter25
  - Contents25
- Using the Menu Interface26
- Overview26
- Starting and Ending a Menu Session27
  - How to Start a Menu Interface Session28
  - How to End a Menu Session and Exit from the Console29
- Main Menu Features31
- Screen Structure and Navigation33
- Rebooting the Switch36
- Menu Features List38
- Where to Go from here39
3 Using the Command Line Interface (Cli)41
- Chapter Contents41
- Accessing the CLI42
- Overview42
- Using the CLI42
- CLI Control and Editing56
4 Using the Hp Web Browser Interface Chapter57
- Chapter Contents57
- Using the HP Web Browser Interface57
- Overview58
- General Features59
- Web Browser Interface Requirements60
- Starting an HP Web Browser Interface Session with the Switch61
  - Using a Standalone Web Browser in a PC or UNIX Workstation61
  - Using HP Toptools for Hubs & Switches62
- Tasks for Your First HP Web Browser Interface Session64
  - Viewing the "First Time Install" Window64
- Support/Mgmt Urls Feature69
  - Support URL70
  - Help and the Management Server URL70
- Status Reporting Features72
5 Switch Memory and Configuration83
- Chapter Contents83
- Overview of Configuration File Management84
- Overview84
- Using the CLI to Implement Configuration Changes86
- Using the Menu and Web Browser Interfaces to Implement Configuration Changes89
- Using Primary and Secondary Flash Image Options93
6 Interface Access and System Information103
- Chapter Contents103
- Overview104
- Interface Access: Console/Serial Link, Web, and Inbound Telnet105
- System Information110
7 Configuring IP Addressing117
- Contents117
- Overview118
- IP Configuration119
8 Time Protocols131
- Chapter Contents131
- Overview132
  - Timep Time Synchronization132
  - SNTP Time Synchronization132
- Overview: Selecting a Time Synchronization Protocol or Turning off Time Protocol Operation133
- SNTP: Viewing, Selecting, and Configuring134
  - Menu: Viewing and Configuring SNTP135
  - CLI: Viewing and Configuring SNTP138
    - Viewing the Current SNTP Configuration138
    - Configuring (Enabling or Disabling) the SNTP Mode139
- Timep: Viewing, Selecting, and Configuring143
  - Menu: Viewing and Configuring Timep144
  - CLI: Viewing and Configuring Timep146
    - Viewing the Current Timep Configuration146
    - Configuring (Enabling or Disabling) the Timep Mode147
- SNTP Unicast Time Polling with Multiple SNTP Servers150
- SNTP Messages in the Event Log153
9 Using Passwords and Tacacs+ to Protect against Unauthorized Access155
- Contents155
- Overview156
- Configuring Username and Password Security157
- TACACS+ Authentication for Central Control of Switch Access Security162
10 Using Authorized IP Managers for Increased Management Security185
- Chapter Contents185
- Overview186
- Using Authorized IP Managers188
11 Optimizing Port Usage through Traffic Control and Port Trunking199
- Default Chapter199
  - Chapter Contents199
- Viewing Port Status and Configuring Port Parameters200
- Optimizing Port Usage through Traffic Control and Port Trunking200
- Overview200
- Port Trunking208
12 Configuring for Network Management Applications Chapter231
- Chapter Contents231
- Configuring for Network Management Applications231
- Overview232
- Cdp242
13 Hp Procurve Stack Management259
- Chapter Contents259
- Overview261
- HP Procurve Stack Management262
- Which Devices Support Stacking263
- Components of HP Procurve Stack Management264
- General Stacking Operation264
- Operating Rules for Stacking265
  - General Rules265
  - Specific Rules266
- Overview of Configuring and Bringing up a Stack268
  - General Steps for Creating a Stack270
- Using the Menu Interface to View Stack Status and Configure Stacking272
  - Using the Menu Interface to View and Configure a Commander Switch272
  - Using the Menu to Manage a Candidate Switch274
- Using the Commander to Manage the Stack276
  - Using the Commander to Access Member Switches for Configuration Changes and Monitoring Traffic283
  - Converting a Commander or Member to a Member of284
- Monitoring Stack Status285
- Using the CLI to View Stack Status and Configure Stacking289
- SNMP Community Operation in a Stack303
- Stacking Operation with Multiple Vlans Configured304
- Transmission Interval304
- Using the CLI to Disable or Re-Enable Stacking304
- Web: Viewing and Configuring Stacking305
- Status Messages306
14 Port-Based Virtual Lans (Vlans) and Gvrp307
- Default Chapter307
  - Chapter Contents307
- Overview309
- Port-Based Virtual Lans (Static Vlans)310
  - Overview of Using Vlans313
- Gvrp336
15 Multimedia Traffic Control with IP Multicast (Igmp)351
- Chapter Contents351
- Overview352
- General Operation and Features353
  - IGMP Terms354
  - IGMP Operating Features355
    - Basic Operation355
    - Enhancements355
- CLI: Configuring and Displaying IGMP356
16 Spanning Tree Protocol (Stp)371
- Chapter Contents371
- Cli372
- Overview372
- Menu: Configuring STP374
- CLI: Configuring STP375
- How STP Operates379
  - STP Fast Mode380
  - STP Operation with 802.1Q Vlans382
- Web: Enabling or Disabling STP379
17 Monitoring and Analyzing Switch Operation385
- Overview386
- Status and Counters Data387
- Port Monitoring Features407
18 Troubleshooting413
- Default Chapter413
- Restoring the Factory-Default Configuration438
  - CLI: Resetting to the Factory-Default Configuration438
    - Clear/Reset: Resetting to the Factory-Default Configuration438
- Restoring a Flash Image439
File Transfers443
- Appendix Contents443
- Troubleshooting TFTP Downloads443
- Overview444
- Downloading an Operating System (os444
- Troubleshooting TFTP Downloads455
- Transferring Switch Configurations455
- Copying Diagnostic Data to a Remote Host, PC, or Unix Workstation458
  - Copying Command Output to a Destination Device458
- MAC Address Management462
- Determining MAC Addresses462
  - Menu: Viewing the Switch's MAC Addresses463
  - CLI: Viewing the Port and VLAN MAC Addresses464
- Daylight Savings Time on HP Procurve Switches467

HP 4108GL - Timep: Viewing, Selecting, and Configuring

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