Hp 2910AL User Manual Page 203
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- Table of contents
- TROUBLESHOOTING
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Time Protocols
SNTP: Viewing, Selecting, and Configuring
Disabling the SNTP Mode. If you want to prevent SNTP from being used
even if selected by timesync (or the Menu interface’s Time Sync Method param-
eter), configure the SNTP mode as disabled.
Syntax:
no sntp
Disables SNTP by changing the SNTP mode configuration to
Disabled.
For example, if the switch is running SNTP in Unicast mode with an SNTP
servers as shown in figure 9-9, no sntp changes the SNTP configuration as
shown below, and disables time synchronization on the switch.
ProCurve(config)# no sntp
ProCurve(config)# show sntp
SNTP Configuration
Even though the Time Sync Mode is set to Sntp,
time synchronization is disabled because no
Time Sync Mode: Sntp
sntp has disabled the SNTP Mode parameter.
SNTP Mode : disabled
Poll Interval (sec) [720] : 720
Priority SNTP Server Address Protocol Version
-------- ---------------------------------------------- ----------------
1 2001:db8::215:60ff:fe79:8980 7
2 10.28.227.141 4
3 fe80::123%vlan10 3
Figure 9-11. Example of Disabling Time Synchronization by Disabling the SNTP Mode
9-15
- ProCurve Switches 1
- HP ProCurve 2910al Switch 3
- Management and Configuration 3
- 3 Using the Menu Interface 6
- 8 Configuring IP Addressing 10
- 9 Time Protocols 10
- 12 Port Trunking 13
- 13 Port Traffic Controls 14
- A File Transfers 16
- C Troubleshooting 19
- D MAC Address Management 22
- E Monitoring Resources 22
- Product Documentation 23
- Software Feature Index 24
- Intelligent Edge Software 25
- Features 25
- Getting Started 29
- Introduction 30
- Conventions 30
- Command Prompts 31
- Screen Simulations 31
- Sources for More Information 32
- Online Help 34
- Command Line Interface 35
- Web Browser Interface 35
- Need Only a Quick Start? 36
- Network 36
- Advantages of Using the CLI 40
- Interface 41
- Web Browser Interfaces 43
- Shows the current banner 46
- Operating Notes 47
- Using the Menu Interface 49
- Command Line (CLI) option.) 51
- Main Menu Features 55
- 1. VLAN Support 61
- Menu Features List 62
- Where To Go From Here 63
- Accessing the CLI 66
- Using the CLI 66
- Privilege Levels at Logon 67
- Privilege Level Operation 68
- Manager Privileges 69
- How To Move Between Levels 71
- ? symbol lists the 72
- Listing Command Options 74
- Displaying CLI “Help” 75
- Configuration Modes 77
- CLI Control and Editing 80
- For example: 81
- CLI Editing Shortcuts 82
- General Features 86
- Starting a Web Browser 87
- ProCurve Manager Plus (PCM+) 88
- First time install 89
- Browser Interface Session 90
- [Fault Detection] key.) 91
- Using a User Name 93
- If You Lose the Password 93
- Support/Mgmt URLs Feature 95
- Support URL 96
- Port Utilization 100
- Status Reporting Features 101
- Port Status 102
- The Alert Log 103
- Contents 109
- Overview 111
- Using the CLI To Implement 114
- Configuration Changes 114
- Changes 117
- Optional Reboot 119
- Switch Command 119
- Image Options 121
- Will boot from primary flash 122
- Switch Software Downloads 123
- No Undo! 125
- Rebooting the Switch 126
- Setting the Default Flash 128
- Using Reload 129
- Multiple Configuration Files 131
- General Operation 132
- Configuration Enabled 135
- Command Page 136
- Connected Host 144
- Web, and Inbound Telnet 149
- Interface Access 150
- Parameters 150
- and reload 154
- Remote Management Sessions 155
- System Information 157
- (config)# time timezone -480 162
- [System Info] 163
- [Apply Changes] 163
- [?] in the web 163
- Configuring IP Addressing 165
- IP Configuration 166
- Live (TTL) 169
- [IP Configuration] 174
- DHCP/Bootp Operation 176
- ■ For Bootp operation: 178
- ■ For DHCP operation: 178
- Loopback Interfaces 179
- Downloads 184
- Time Protocols 189
- Operation 191
- Configuring 192
- ■ You want to: 199
- – TIMEP (the default) 205
- Parameter 212
- SNTP Servers 213
- Configured 214
- Port Type 218
- Status of Ports 219
- Flow Control 219
- Broadcast Limit 219
- Configuring Ports 221
- Dynamically updates 225
- Viewing Transceiver Status 226
- Disables per-port flow 230
- ■ 10/100-TX al module ports 232
- ■ Manual MDI 233
- ■ Manual MDI-X 233
- Per-Port MDI 234
- Configuration 234
- Friendly Port 240
- Been Inserted 241
- Configuring UDLD 244
- Enabling UDLD 245
- Viewing UDLD Information 247
- Port 4 is shown as blocked 249
- Introduction to PoE+ 253
- PoE Terminology 254
- PoE Operation 255
- PD Support 256
- Configuring PoE Operation 257
- Controlling PoE Allocation 260
- PoE with LLDP 264
- • Detection Status: 273
- PoE Event Log Messages 278
- Port Trunking 281
- Trunk Configuration Methods 284
- Trunk Group 289
- [Enter] 290
- “Up” Links 294
- Standby Link 294
- [Port Status] 297
- Default Port Operation 301
- LACP Notes and Restrictions 302
- “Trunk” Option 306
- Trunked Links 307
- Port Traffic Controls 311
- Rate-Limiting 313
- Note on Testing 317
- Jumbo Frames 318
- Operating Rules 319
- Configuring IP MTU 324
- SNMP Implementation 324
- Troubleshooting 328
- Applications 329
- SNMP Management Features 332
- SNMP Version 3 Commands 334
- Enabling SNMPv3 335
- SNMPv3 Users 335
- Group Access Levels 339
- SNMPv3 Communities 339
- Two Operator Access Levels 340
- Communities 341
- SNMP Notifications 345
- ■ Access Security Guide: 346
- SNMPv1 and SNMPv2c Traps 347
- Enabling SNMPv2c Informs 349
- SNMPv2c Inform 350
- Enabling Link-Change Traps 356
- ■ SNMP communities 359
- Advanced Management: RMON 361
- Configuring sFlow 362
- Terminology 366
- General LLDP Operation 368
- Configuration Options 369
- LLDP Operating Rules 372
- Configuring LLDP Operation 373
- ■ Chassis ID (TLV) 381
- ■ Port ID (TLV) 381
- TLV-Type > 382
- Advertisements 383
- LLDP-MED Fast Start Control 389
- ■ Voice VLAN ID (VID) 390
- Telephone) Source 402
- Displaying LLDP Statistics 403
- LLDP Operating Notes 405
- LLDP and CDP Data Management 407
- CDP Operation and Commands 409
- ■ show cdp displays 412
- File Transfers 413
- Downloading Switch Software 415
- [E] (for Edit) 417
- [Enter] to begin 418
- Using Secure Copy and SFTP 421
- The SCP/SFTP Process 422
- Command Options 425
- Authentication 426
- SCP/SFTP Operating Notes 426
- Primary or Secondary Flash 430
- [Send] button 431
- Switch-to-Switch Download 433
- Copying Software Images 436
- ProCurve# show tech custom 440
- No SHOW-TECH file found 440
- Host, USB Device, PC or UNIX 447
- Workstation 447
- Using USB Autorun 451
- Security Considerations 452
- Enabling Secure Mode 454
- Status and Counters Data 460
- General System Information 462
- Menu Access 465
- Control Status 467
- Group Statistics 470
- [Enter]. The address 472
- Prompt for Selecting 473
- CLI Access to MSTP Data 475
- VLAN Information 477
- [Y]) to select Yes 481
- Use the Space bar to 482
- Monitored Ports 484
- Locating a Device 487
- Troubleshooting Approaches 493
- Unusual Network Activity 496
- ACL Problems 497
- IGMP-Related Problems 501
- LACP-Related Problems 502
- Mesh-Related Problems 502
- QoS-Related Problems 505
- Radius-Related Problems 505
- Problems 506
- SSH-Related Problems 507
- TACACS-Related Problems 509
- VLAN-Related Problems 511
- Fan Failure 513
- Switch Problems 514
- Key Action 523
- Event Log and SNMP Messages 524
- Log Throttle Periods 525
- Example of Log Throttling 525
- Debug/Syslog Operation 528
- ■ Up to six Syslog servers 529
- Destinations 536
- Debug Command 537
- Debug Destinations 539
- Logging Command 540
- Configuring a Syslog Server 541
- Diagnostic Tools 547
- Port Auto-Negotiation 548
- Ping and Link Tests 548
- CLI: Ping Test 550
- Link Tests 551
- Traceroute Command 552
- Syntax: kill 567
- Restoring a Flash Image 573
- ■ 8 Bits 574
- DNS Resolver 576
- Basic Operation 577
- Configuring a DNS Entry 579
- First-Hop Router (“B”) 581
- Traceroute Target 581
- Event Log Messages 584
- MAC Address Management 585
- Determining MAC Addresses 587
- All Models 589
- Viewing the MAC Addresses of 591
- Connected Devices 591
- Monitoring Resources 593
- Policy Enforcement Engine 594
- Available 598
- ■ Alaska 599
- ■ Canada and Continental US 599
- ■ Southern Hemisphere 599
- ■ Western Europe 599
- Symbols 603
- Numerics 603
- 2 – Index 604
- Index – 3 605
- 4 – Index 606
- Index – 5 607
- 6 – Index 608
- Index – 7 609
- 8 – Index 610
- Index – 9 611
- 10 – Index 612
- Index – 11 613
- 12 – Index 614
- Index – 13 615
- 14 – Index 616
- Development Company, L.P 618
- February 2009 618
- Manual Part Number 618
- 5992-5437 618
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