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44 Dell PowerConnect 55xx Systems User Guide
Stack Overview
The PowerConnect 5500 Stacking feature provides multiple switch
management through a single switch, so that all units in the stack are treated
as if they were a single switch. All stack members are accessed through the
management IP address, through which the stack is managed.
Each switch is a member in a stack, although the stack may consist of only a
single switch.
Up to eight units can be stacked.
This section covers the following topics:
• Stack Operation Modes
• Stacking Units
•Stack Topology
Stack Operation Modes
All stacks must have a Master unit, and may have a Master Backup unit. All
other units are connected to the stack as members (slaves).
A unit in the stack can be in one of the following modes:
•
Stack Master
— Runs the fully operational software of a switch. In
addition, it runs configures and manages all other units in the stack. All
protocols run in the context of the Master unit. It is responsible for
updating and synchronizing the
Master Backup
.
The Stack Master detects and reconfigures the ports with minimal
operational impact in the event of:
Unit failure
Inter-unit stacking link failure
Unit insertion
Unit removal
When the Master unit boots, or when inserting or removing a stack
member, the Master unit initiates a stacking discovering process.
- System User Guide 1
- Notes, Cautions, and Warnings 2
- Table of Contents 3
- 4 Contents 4
- 6 Contents 6
- 8 Contents 8
- 10 Contents 10
- 12 Contents 12
- CLI Reference Guide 13
- Features 14
- IP Version 6 (IPv6) Support 15
- Stack Support 15
- Power over Ethernet 15
- Green Ethernet 16
- Back Pressure Support 16
- Virtual Cable Testing (VCT) 17
- Auto-Negotiation 17
- MDI/MDIX Support 17
- Static MAC Entries 18
- Self-Learning MAC Addresses 18
- MAC Multicast Support 18
- Layer 2 Features 19
- IGMP Snooping 19
- Port Mirroring 19
- Broadcast Storm Control 19
- VLAN Supported Features 20
- Guest VLAN 21
- Private VLAN 21
- Multicast TV VLAN 21
- Spanning Tree Protocol (STP) 21
- Fast Link 22
- STP BPDU Guard 22
- Link Aggregation 23
- Quality of Service Features 23
- Device Management Features 24
- SNMP Versions 1, 2, and 3 25
- Web-Based Management 25
- Flow Monitoring (sflow) 25
- 802.1ab (LLDP-MED) 27
- Security Features 28
- Port Profile (CLI Macro) 30
- Protected Ports 31
- Identifying a Switch via LED 32
- Hardware Description 33
- Device Models 34
- Device Structure 34
- Front Panel 35
- Buttons and LEDs 36
- Back Panel 37
- LED Definitions 38
- Port LEDs 40
- Power Supplies 42
- Stacking Overview 43
- Stack Overview 44
- Stacking Units 45
- HDMI Ports 46
- Stack Members and Unit IDs 47
- Adding a Unit to the Stack 48
- Assigning Unit IDs 48
- Replacing Stacking Members 51
- Rebooting the Stack 52
- Configuring the Switch 54
- Configuration Work Flow 55
- Console Port 56
- Booting the Switch 57
- Configuring the Stack 58
- Advanced Switch Configuration 63
- Using the CLI 64
- Direct Connection 67
- Telnet Connection 67
- Retrieving an IP Address 68
- Broadcast 69
- Configuration 71
- Configuring Login Banners 74
- Startup Menu Procedures 76
- Erase FLASH File - Option[2] 77
- [5] and press <Enter> 78
- Software Download 79
- Boot Image Download 81
- Using Dell OpenManage 83
- Administrator 83
- Starting the Application 84
- Understanding the Interface 84
- Device Representation 85
- Port Representation 85
- • gi—Giga port 86
- • te —Ten Giga port 86
- •x — Unit ID 86
- •z — Port number 86
- Information Buttons 87
- Device Management Icons 87
- Configuration file 88
- Field Definitions 89
- Common GUI Features 89
- Italic Font 90
- Bold Italic Font 90
- Network Security 92
- Port Security 93
- ACL Overview 98
- MAC-Based ACLs 99
- MAC-based ACLs 100
- MAC-Based ACEs 101
- IPv4-Based ACLs 104
- P-based 105
- IPv6-Based ACLs 112
- Pv6-based ACLs 113
- ACL Binding 118
- Bindings 119
- Time Range 122
- Absolute Time Range 123
- Time Range Recurrence 124
- Dot1x Authentication 127
- Dot1x Overview 128
- Monitoring Users 141
- 142
- Host Authentication 144
- Port Authentication Users 147
- General Switch Information 151
- System Health 154
- Time Synchronization 162
- [minutes offset] 169
- SNTP Server Types 171
- Stratums 172
- Authentication 173
- Figure 9-5. Global Settings 174
- [mSec] [mSec] 183
- [mSec] [mSec] 183
- SNTP server 186
- System Log Overview 188
- Global Parameters 189
- RAM Log 193
- Log File (in Flash) 195
- Login History 196
- Figure 9-13. Login History 197
- Remote Log Server 199
- IP Addressing 202
- IPv4 Interface Parameters 203
- DHCP IPv4 Interface 207
- IPv4 Static Routing 210
- PC 1.1.1.1 214
- PC 2.1.1.1 214
- VLAN 100 214
- VLAN 150 214
- Global IPv6 216
- IPv6 Default Gateway 219
- ISATAP Tunnel 222
- IPv6 Neighbors 228
- IPv6 Routes Table 232
- CLI Command Description 233
- Domain Name System 235
- Default Domain Names 238
- Host Name Mapping 240
- Figure 9-27. ARP: Summary 242
- UDP Relay 245
- Diagnostics 248
- Integrated Cable Test 249
- Management Security 254
- Profile Rules 259
- Authentication Profiles 262
- Select Authentication 265
- Active Users 268
- Local User Database 270
- Line Passwords 272
- Enable Password 274
- TACACS+ 275
- Figure 9-39. TACACS+: Summary 276
- Password Management 279
- Figure 9-41. RADIUS: Summary 285
- retries 288
- key-string 288
- DHCP Server 290
- DHCP Server Properties 291
- Network Pool 294
- Excluded Addresses 299
- Static Hosts 301
- Address Binding 305
- SNMP Overview 307
- SNMP Access Rights 308
- SNMP Global Settings 309
- SNMP Views 312
- SNMP Access Control (Groups) 315
- SNMP Communities 320
- Figure 9-51. SNMP Community 321
- SNMP Notification Filters 323
- SNMP Notification Recipients 326
- File Management 330
- File Download 331
- File Upload 331
- Setup File Contents 332
- Setup File Format 333
- Figure 9-55. File Download 345
- To download files using TFTP 347
- Figure 9-57. File Upload 350
- Figure 9-58. File Upload 351
- Active Images 354
- Copy Files 355
- Figure 9-60. Copy Files 356
- File System 359
- Stack Management 361
- Figure 9-62. Stack Unit ID 362
- Versions 364
- Figure 9-64. Reset 366
- Table 9-71. Reset CLI Command 366
- Workflow 370
- Figure 9-68. sFlow Statistics 376
- Overview 379
- Flow Control 380
- Back Pressure 380
- Port Default Settings 380
- Jumbo Frames 382
- Green Ethernet Configuration 384
- Protected Port Configuration 389
- Port Profile 391
- Sample CLI Scripts 395
- Port Configuration 397
- LAG Configuration 403
- Storm Control 408
- Mirroring 414
- Address Tables 416
- Static Addresses 418
- Dynamic Addresses 421
- GARP Overview 425
- GARP Timers 426
- Spanning Tree 428
- Global Settings 431
- STP Port Settings 436
- STP LAG Settings 441
- Rapid Spanning Tree 444
- Multiple Spanning Tree 448
- MSTP Overview 449
- MSTP Properties 449
- VLAN to MSTP Instance 452
- MSTP Instance Settings 454
- MSTP Interface Settings 456
- Virtual LAN Overview 460
- Frame Flow 461
- Special-case VLANs 461
- QinQ Tagging 462
- Port Modes 462
- Acceptable Frame Type 464
- VLAN Membership 465
- Port Settings 468
- LAGs Settings 474
- Protocol Groups 477
- Defining Protocol Groups 478
- Protocol groups 480
- Protocol Port 481
- GVRP Parameters 483
- Voice VLAN 491
- Properties 492
- Port Setting 495
- Figure 14-11. OUI: Summary 498
- Voice VLAN OUIs CLI Commands 499
- Link Aggregation Overview 501
- LACP Parameters 503
- LAG Membership 506
- Multicast 508
- Multicast Support Overview 509
- Bridge Multicast Groups 513
- Port Control Definition 514
- Bridge Multicast Forward All 517
- Figure 16-4. IGMP Snooping 520
- vlan-id 523
- vlan-id] 523
- Unregistered Multicast 525
- Multicast TV VLAN Membership 528
- Multicast TV VLAN Mapping 529
- LLDP Overview 532
- LLDP Properties 533
- LLDP Port Settings 537
- MED Network Policy 540
- LLDP MED Port Settings 543
- Neighbors Information 548
- Dynamic ARP Inspection 551
- Dynamic ARP 552
- Inspection List 552
- Global Settings pages 554
- Dynamic ARP Inspection List 555
- VLAN Settings 559
- VLAN Settings pages 560
- Trusted Interfaces 561
- Trusted Interface pages 562
- DHCP Snooping 563
- Snooping Binding Database 573
- Figure 19-4. Binding Database 574
- DHCP Relay 577
- Option 82 579
- Interface Settings 582
- Optimizing iSCSI Overview 585
- Limitations 586
- Figure 20-3. iSCSI Sessions 593
- [detailed] 594
- Displays iSCSI sessions 594
- Configuring iSCSI Using CLI 595
- Statistics/RMON 596
- Table Views 597
- Denied ACEs Counters 598
- Utilization Summary 600
- Counter Summary 602
- Interface Statistics 604
- Etherlike Statistics 606
- GVRP Statistics 609
- EAP Statistics 612
- RMON Components 615
- Statistics 616
- History Control 619
- History Table 621
- Events Control 624
- Events Log 627
- Figure 21-13. Alarms: Summary 629
- Figure 21-14. Ports 633
- Figure 21-15. LAGs 635
- CPU Utilization 638
- Quality of Service 640
- QoS Features and Components 641
- QoS Mode 643
- QoS Properties 645
- Traffic Limitation Methods 646
- Figure 22-3. Queue 648
- Mapping to Queue 649
- Figure 22-4. CoS to Queue 651
- Figure 22-5. DSCP to Queue 653
- Bandwidth 654
- TCP Congestion Avoidance 657
- QoS Basic Mode 659
- DSCP Rewrite 662
- Figure 22-9. DSCP Rewrite 663
- QoS Advanced Mode 668
- DSCP Mapping 670
- Policy Class Maps 671
- Aggregate Policy 671
- Class Mapping 672
- QoS Policers 675
- Policy Binding 686
- QoS Statistics 688
- Policer Statistics 689
- Aggregated Policer 691
- Queues Statistics 692
- Glossary 695
- Bootstrap Protocol 697
- Bridge Protocol Data Unit 697
- Configuration Data Base 697
- Class of Service (CoS) 698
- Command Line Interface 698
- Central Processing Unit 698
- DiffServe Code Point (DSCP) 698
- Embedded Web Server 699
- Fast Forward Table 699
- First In First Out 700
- Head of Line 700
- HyperText Transport Protocol 701
- Integrated Circuit 701
- Media Access Control Address 703
- Data Link Control 703
- Message Digest 5 704
- Media Dependent Interface 704
- Management Information Base 704
- Network Management System 704
- Object Identifier 705
- Protocol Data Unit 705
- Packet Internet Groper 705
- Protocol VLAN Edge 705
- Remote Monitoring 706
- Rapid Spanning Tree Protocol 706
- System on a Chip 707
- Secure Shell 707
- Terminal Emulation Protocol 708
- User Data Protocol 708
- Virtual Local Area Networks 709
- Wide Area Networks 709
- Numerics 710
- XG Ports 35 723
- Revision History 727
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