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Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide User Manual

Page 8

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VLAN tags and dual mode.............................................................. 319
Configuring PVST+ support............................................................ 319
Displaying PVST+ support information........................................... 320
PVST+ configuration examples.......................................................321

PVRST compatibility................................................................................... 323
BPDU guard................................................................................................323

Enabling BPDU protection by port.................................................. 324
Re-enabling ports disabled by BPDU guard................................... 324
Displaying the BPDU guard status..................................................324
BPDU guard status example console messages ...........................325

Root guard.................................................................................................. 326

Enabling STP root guard.................................................................326
Displaying the STP root guard........................................................ 327
Displaying the root guard by VLAN.................................................327

Designated Protection.................................................................................327

Enabling Designated Protection on a port...................................... 328
Syslog message for a port in designated inconsistent state........... 328

Error disable recovery.................................................................................328

Enabling an error-disabled port automatically.................................328
Enabling an error-disabled port manually....................................... 329
Setting the recovery interval............................................................329
Displaying the error disable recovery state by interface ................ 329
Displaying the recovery state for all conditions...............................330
Displaying the recovery state by port number and cause............... 330
Errdisable Syslog messages...........................................................330

802.1s Multiple Spanning Tree Protocol..................................................... 330

Multiple spanning-tree regions .......................................................331
Configuration notes.........................................................................332
Configuring MSTP mode and scope............................................... 332
Reduced occurrences of MSTP reconvergence............................. 333
Configuring additional MSTP parameters....................................... 335

VLANs.................................................................................................................................345

Supported VLAN features........................................................................... 345
VLAN overview............................................................................................346

Types of VLANs.............................................................................. 346
Modifying a port-based VLAN......................................................... 351
Default VLAN.................................................................................. 361
802.1Q tagging................................................................................362
Spanning Tree Protocol (STP)........................................................364
Virtual routing interfaces................................................................. 365
VLAN and virtual routing interface groups...................................... 366
Dynamic, static, and excluded port membership............................ 367
Super aggregated VLANs............................................................... 370
Trunk group ports and VLAN membership......................................370
Summary of VLAN configuration rules............................................370

Routing between VLANs.............................................................................371

Virtual routing interfaces (Layer 2 Switches only)...........................371
Routing between VLANs using virtual routing interfaces (Layer

3 Switches only)........................................................................ 372

Dynamic port assignment (Layer 2 Switches and Layer 3

Switches)...................................................................................373

Assigning a different VLAN ID to the default VLAN........................ 373
Assigning different VLAN IDs to reserved VLANs 4091 and 4092. 373
Assigning trunk group ports............................................................ 374
Enable spanning tree on a VLAN....................................................374

Configuring IP subnet, IPX network and protocol-based VLANs................ 376

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FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide

53-1003086-04