AT-S63 Management Software Features Guide
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Chapter 21: Multiple Spanning Tree Protocol ........................................................................................... 225
Supported Platforms................................................................................... .................................................... 226
Overview.................................................................................................................................. ....................... 227
Multiple Spanning Tree Instance (MSTI)....................................................... ................................................. 228
MSTI Guidelines........................................................ ..................................................................................... 232
VLAN and MSTI Associations ........................................................................................................................ 233
Ports in Multiple MSTIs............................................................................................................................... .... 234
Multiple Spanning Tree Regions .................................................................................................................... 235
Region Guidelines.......................................................................................................... ..........................237
Common and Internal Spanning Tree (CIST)..... ..................................................................................... 238
MSTP with STP and RSTP................................. ..................................................................................... 238
Summary of Guidelines............................. ..................................................................................................... 239
Associating VLANs to MSTIs.......................................................................................................................... 241
Connecting VLANs Across Different Regions ................................................................................................ 243
Section VI: Virtual LANs .......................................................................................245Chapter 22: Port-based and Tagged VLANs ............................................................................... .............. 247
Supported Platforms................................................................................... .................................................... 248
Overview.................................................................................................................................. ....................... 249
Port-based VLAN Overview............................................................................................................................ 251
VLAN Name........................................ ..................................................................................................... 251
VLAN Identifier..................................................................... .................................................................... 251
Untagged Ports....................................... ................................................................................................. 252
Port VLAN Identifier...... ........................................................................................................................... 252
Guidelines to Creating a Port-based VLAN.............................................................................................. 253
Drawbacks of Port-based VLANs............................................................................................................. 253
Port-based Example 1.............................................................................................................................. 254
Port-based Example 2.............................................................................................................................. 255
Tagged VLAN Overview...................................................... ........................................................................... 257
Tagged and Untagged Ports......................................................................... ........................................... 258
Port VLAN Identifier...... ........................................................................................................................... 258
Guidelines to Creating a Tagged VLAN............................................................... .................................... 258
Tagged VLAN Example............................................................................................................................ 259
Chapter 23: GARP VLAN Registration Protocol ................................................... .................................... 261
Supported Platforms................................................................................... .................................................... 262
Overview.................................................................................................................................. ....................... 263
Guidelines................................................................................................................................ ....................... 266
GVRP and Network Security............ .............................................................................................................. 267
GVRP-inactive Intermediate Switches............................................................................................................ 268
Generic Attribute Registration Protocol (GARP) Overview............................................................................. 269
Chapter 24: Multiple VLAN Modes .................................................. ........................................................... 273
Supported Platforms................................................................................... .................................................... 274
Overview.................................................................................................................................. ....................... 275
802.1Q- Compliant Multiple VLAN Mode........................................................................................................ 276
Non-802.1Q Compliant Multiple VLAN Mode...................................................... ........................................... 278
Chapter 25: Protected Ports VLANs .......................................................................................................... 279
Supported Platforms................................................................................... .................................................... 280
Overview.................................................................................................................................. ....................... 281
Guidelines................................................................................................................................ ....................... 283