HP PROCURVE 6600 Manual do Utilizador Página 353
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Port Trunking
Distributed Trunking
Unicast frames are only forwarded by one of the DT switches unless the MAC
address is reachable only through the other DT switch, for example, a host on
DT2 sends or receives frames directly through the DT2 switch.
Forwarding Broadcast, Multicast, and
Unknown Traffic Upstream
When the DT1 switch receives broadcast traffic, multicast traffic, or traffic
with an unknown destination from a server, it broadcasts the traffic across all
the links, including the DT1 link to the DT2 switch. The DT2 switch won’t send
this traffic through the same trunk groups, so the server doesn’t receive the
same traffic that it sent out. The DT2 switch only forwards this traffic to
switches or hosts that are not on its DT links.
Forwarding Unicast Traffic Downstream (to the Server)
In normal trunking, the load balancing is based on the SA/DA MAC address
pair across the links in the trunk (See “Outbound Traffic Distribution Across
Trunked Links” on page 12-37 for more information on SA/DA load balancing).
The last 5 bits of the SA/DA MAC address pair are used in a calculation to
determine the load-balancing across the links. In distributed trunking, this
calculation is extended across the DT switches and its links.
Downstream unicast traffic received by the DT switches is load balanced
across both switches using the DT trunks, based on the SA/DA MAC address
pair. For example, if the DT1 switch and the DT2 switch have the same number
of DT links operational in a trunk group (1 link on DT1 and 1 link on DT2, 2
links on DT1 and 2 links on DT2, etc.), half of the traffic is forwarded by the
DT1 switch and half of the traffic is forwarded by the DT2 switch. This is not
the same as forwarding half of the bandwidth traffic. If DT1 has one link and
DT2 has two links, the SA/DA traffic flow is load balanced with 33% of the
traffic flowing through DT1 and 66% of the traffic flowing through DT2.
Forwarding Broadcast, Multicast, and Unknown Traffic
Downstream (to the Server)
Downstream broadcast traffic, multicast traffic, and traffic with an unknown
destination is sent the same way that unicast traffic is sent, that is, the DT1
switch and DT2 switch forward the traffic proportionately based on the
number of DT links in each switch in a trunk group.
12-33
- HP ProCurve Switch Software 1
- September 2009 3
- K.14.34 3
- 3 Using the Menu Interface 6
- 8 Configuring IP Addressing 10
- 9 Time Protocols 11
- Port Trunking 14
- 13 Port Traffic Controls 15
- Redundancy (Switches 8200zl) 18
- A File Transfers 20
- C Troubleshooting 24
- Product Documentation 29
- Software Feature Index 30
- Intelligent Edge Software 31
- Features 31
- Getting Started 37
- Introduction 38
- Conventions 38
- Command Prompts 39
- Screen Simulations 39
- Sources for More Information 40
- Online Help 42
- Command Line Interface 43
- Web Browser Interface 43
- Need Only a Quick Start? 44
- Network 44
- Advantages of Using the CLI 48
- Interface 49
- Web Browser Interfaces 53
- Using the Menu Interface 59
- Command Line (CLI) option.) 61
- Main Menu Features 65
- 1. VLAN Support 71
- Menu Features List 72
- Where To Go From Here 73
- Accessing the CLI 76
- Using the CLI 76
- Privilege Levels at Logon 77
- Privilege Level Operation 78
- Manager Privileges 79
- How To Move Between Levels 81
- ? symbol lists the 82
- Listing Command Options 84
- Displaying CLI “Help” 85
- Configuration Modes 87
- CLI Control and Editing 90
- For example: 91
- Using a Command Alias 92
- CLI Shortcut Keystrokes 94
- General Features 98
- Starting a Web Browser 99
- ProCurve Manager Plus (PCM+) 100
- First time install 101
- Browser Interface Session 102
- [Fault Detection] key.) 103
- Using a User Name 105
- If You Lose the Password 105
- Support/Mgmt URLs Feature 107
- Support URL 108
- Status Reporting Features 111
- Port Utilization 112
- Port Status 114
- The Alert Log 115
- Status Indicators 117
- Contents 121
- Overview 123
- Using the CLI To Implement 126
- Configuration Changes 126
- Changes 130
- Optional Reboot 132
- Switch Command 132
- Image Options 134
- Will boot from primary flash 135
- Switch Software Downloads 136
- Caution: 138
- No Undo! 138
- Rebooting the Switch 139
- Setting the Default Flash 141
- Set to secondary flash 143
- Using Reload 144
- Multiple Configuration Files 146
- General Operation 147
- Configuration Enabled 150
- Command Page 151
- Connected Host 160
- DHCP Option 66 161
- Operating Notes 162
- Log Messages 163
- Web, and Inbound Telnet 167
- Interface Access 168
- Parameters 168
- ■ VT100 operation 173
- ■ 19,200 baud 173
- ■ No flow control 173
- ■ 10-minute inactivity time 173
- ■ Critical log events 173
- Remote Management Sessions 175
- System Information 176
- ■ System Name 182
- ■ System Location 182
- ■ System Contact 182
- Configuring IP Addressing 183
- IP Configuration 184
- Live (TTL) 187
- [E] (for Edit) 188
- [IP Configuration] 193
- DHCP/Bootp Operation 194
- ■ For Bootp operation: 197
- ■ For DHCP operation: 197
- Loopback Interfaces 198
- Downloads 203
- Enabling IP Preserve 204
- Error Messages 214
- Time Protocols 215
- Operation 218
- Configuring 219
- SNTP Client Authentication 230
- Requirements 231
- Key-Value 232
- Configuring a Trusted Key 233
- Include-Credentials Command 237
- – TIMEP (the default) 241
- SNTP Servers 249
- Configured 250
- Menu: Port Configuration 256
- Dynamically updates 260
- Viewing Transceiver Status 264
- ■ 10/100-TX xl module ports 271
- ■ Manual MDI 272
- ■ Manual MDI-X 272
- Friendly Port 279
- Been Inserted 281
- Configuring UDLD 284
- Enabling UDLD 285
- Viewing UDLD Information 287
- Port 4 is shown as blocked 288
- Introduction to PoE 293
- PoE Operation 295
- PD Support 296
- Power Priority Operation 297
- Configuring PoE Operation 298
- Controlling PoE Allocation 302
- Maximum 303
- Information 308
- Power Status 309
- Configuration 315
- Assigning PoE Ports to VLANs 316
- PoE Event Log Messages 318
- Trunk Configuration Methods 326
- Trunk Group 330
- [Enter] 331
- “Up” Links 335
- Standby Link 335
- [Port Status] 338
- Default Port Operation 342
- LACP Notes and Restrictions 343
- Distributed Trunking 347
- ISC Port Configuration 350
- Spanning Tree 352
- Unknown Traffic Upstream 353
- Downstream (to the Server) 353
- “Trunk” Option 356
- Trunked Links 357
- Port Traffic Controls 361
- Rate-Limiting 364
- Configuring Rate-Limiting 365
- ICMP Rate-Limiting 370
- Terminology 371
- Note on Testing 377
- GMB Operation 382
- Outbound Traffic 385
- GMB Operating Notes 389
- Jumbo Frames 390
- Operating Rules 391
- Configuring IP MTU 396
- SNMP Implementation 396
- Troubleshooting 400
- Applications 401
- SNMP Management Features 404
- SNMP Version 3 Commands 406
- Enabling SNMPv3 407
- SNMPv3 Users 407
- Group Access Levels 411
- SNMPv3 Communities 411
- Two Operator Access Levels 412
- Communities 413
- SNMP Notifications 417
- ■ Access Security Guide: 418
- SNMPv1 and SNMPv2c Traps 419
- Enabling SNMPv2c Informs 421
- SNMPv2c Inform 422
- Enabling Link-Change Traps 428
- ■ SNMP communities 431
- Configuring Listening Mode 433
- Advanced Management: RMON 434
- Configuring sFlow 435
- General LLDP Operation 441
- Configuration Options 442
- ■ IEEE P802.1AB 444
- LLDP Operating Rules 445
- Configuring LLDP Operation 446
- ■ Chassis ID (TLV) 454
- ■ Port ID (TLV) 454
- TLV-Type > 455
- Advertisements 456
- LLDP-MED Fast Start Control 462
- ■ Voice VLAN ID (VID) 463
- Telephone) Source 475
- Displaying LLDP Statistics 476
- LLDP Operating Notes 478
- LLDP and CDP Data Management 480
- CDP Operation and Commands 482
- ■ show cdp displays 485
- Using Redundant Management 491
- Redundancy enabled 493
- Redundancy disabled 494
- Management Module Switchover 499
- After Downloading 504
- Mismatch exists 506
- Corrupted 507
- Show Modules 509
- Show Redundancy 510
- Show Flash 511
- Show Version 511
- Show Log 512
- Redundant Management 515
- Reload Command 518
- Management 520
- Overview Page 523
- Redundancy Status Page 523
- Device View Page 524
- Active (Actv) LED Behavior 526
- Standby Led Behavior 526
- Logging Messages 527
- Crash Files 528
- Determined 530
- Event Log Messages 532
- File Transfers 535
- Downloading Switch Software 538
- [Enter] to begin 541
- Enabling TFTP 544
- Using Auto-TFTP 545
- Using Secure Copy and SFTP 546
- The SCP/SFTP Process 547
- Command Options 549
- Authentication 550
- SCP/SFTP Operating Notes 550
- PC or UNIX Workstation 554
- Primary or Secondary Flash 555
- [Send] button 556
- Switch-to-Switch Download 558
- Copying Software Images 562
- ProCurve# show tech custom 566
- No SHOW-TECH file found 566
- Host, USB Device, PC or UNIX 573
- Workstation 573
- Using USB Autorun 581
- Security Considerations 582
- Enabling Secure Mode 584
- Status and Counters Data 591
- General System Information 593
- Menu Access 596
- CLI Access 597
- Module Information 598
- Control Status 601
- CLI Access to MSTP Data 609
- VLAN Information 611
- Traffic Mirroring 614
- Mirroring Terminology 616
- Monitored Traffic Sources 619
- Mirroring Session Limits 620
- Mirroring Sessions 620
- Mirroring Configuration 621
- Migration to Release K.12.xx 623
- Mirroring 625
- Configuration Steps 626
- Local Mirroring Overview 630
- Deprecated 631
- Command 631
- Remote Mirroring Overview 632
- Traffic Selection Options 641
- Untagged Mirrored Packets 645
- Criteria 647
- Deprecation of 648
- ACL-based 648
- Traffic 648
- Selection 648
- Address 649
- Classifier-Based Mirroring 652
- Maximum Supported Frame Size 678
- Mirrored Traffic 680
- Troubleshooting Approaches 689
- Unusual Network Activity 692
- ACL Problems 693
- IGMP-Related Problems 698
- LACP-Related Problems 698
- Mesh-Related Problems 699
- QoS-Related Problems 702
- Radius-Related Problems 702
- Problems 703
- SSH-Related Problems 704
- TACACS-Related Problems 706
- VLAN-Related Problems 708
- Fan Failure 710
- Switch Problems 711
- Log and SNMP Messages 721
- Log Throttle Periods 722
- Example of Log Throttling 722
- Debug/Syslog Operation 725
- ■ Up to six Syslog servers 726
- Destinations 733
- Debug Command 734
- Debug Destinations 736
- Logging Command 738
- Configuring a Syslog Server 739
- Diagnostic Tools 746
- Port Auto-Negotiation 747
- Ping and Link Tests 747
- CLI: Ping Test 749
- Link Tests 750
- Traceroute Command 751
- Restoring a Flash Image 768
- DNS Resolver 771
- Basic Operation 772
- DNS-Compatible Commands 773
- Configuring a DNS Entry 774
- First-Hop Router (“B”) 776
- Traceroute Target 776
- MAC Address Management 781
- Determining MAC Addresses 783
- All Models 785
- Viewing the MAC Addresses of 787
- Connected Devices 787
- Monitoring Resources 789
- Policy Enforcement Engine 790
- Available 795
- ■ Alaska 797
- ■ Canada and Continental US 797
- ■ Southern Hemisphere 797
- ■ Western Europe 797
- Maximum Values 801
- Subject Maximum 802
- Switch Licensing 803
- Power-Saving Features 805
- Show Savepower Commands 810
- Concepts 814
- Example 816
- OOBM and Switch Applications 817
- OOBM Configuration 818
- OOBM Enable/disable 819
- OOBM Port Enable/disable 820
- OOBM Port Speed Control 821
- OOBM Show Commands 823
- Show OOBM IP Configuration 824
- Show OOBM ARP Information 824
- Application Server Commands 825
- Application Client Commands 826
- Symbols 829
- Numerics 829
- 2 – Index 830
- Index – 3 831
- 4 – Index 832
- Index – 5 833
- 6 – Index 834
- Index – 7 835
- 8 – Index 836
- Index – 9 837
- 10 – Index 838
- Index – 11 839
- 12 – Index 840
- Index – 13 841
- 14 – Index 842
- Index – 15 843
- 16 – Index 844
- Index – 17 845
- 18 – Index 846
- Index – 19 847
- 20 – Index 848
- Index – 21 849
- 22 – Index 850
- Index – 23 851
- 24 – Index 852
- ProCurve 5400zl Switches 854
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