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Using VLANs, Spanning Tree, and Hunt Groups (Layer 2 and Layer 3)
12
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8 Cajun P550/P220 Switch Operation Guide
Table 12-3. Spanning Tree Options
4. Click APPLY save your changes, or CANCEL to restore previous settings.
5. In the Bridge column, click on a bridge name to set bridge parameters. The
Spanning Tree Bridge Configuration dialog box opens.
6. Use Table 12-4 to select bridge-level parameters:
Parameter Definition
IEEE 802.1D Entire switch is a single IEEE 802.1D-compliant bridge.
Note: When the spanning tree mode is set to IEEE 802.D,
BPDUs are sent out ports in Clear (non-trunked) format even if
the port has a trunking format (3Com, 802.1Q or Dual Layer)
defined.
Per VLAN Each VLAN functions as a separate IEEE 802.1D-compliant
bridge.
Note: If you disable spanning tree on a single VLAN, spanning
tree will be re-enabled when the switch is reset.
In order for spanning tree to function properly with 3Com
trunked ports, the spanning tree mode should be set to
per-VLAN. In Per VLAN spanning tree, there is one instance of
spanning tree for each VLAN and the BPDUs are tagged with the
VLAN ID, ensuring they are interpreted correctly on the
receiving end.
Dual Layer Spanning tree terminates at edge of the switch network.
Spanning Tree per VLAN within the switch network.
Disable Spanning tree not used.
Table 12-4. Bridge-Level Parameters
Parameter Definition
Mode Determines whether spanning tree is enabled or disabled for
this bridge.
Priority STP Priority level for this bridge.
Bridge Max Age Sets the maximum amount of time that this bridge retains
bridging information before discarding. When the
maximum age expires, the bridge assumes it has lost
connection to the network, and sends out requests to be
re-added to the spanning tree.
Bridge Hello Time Time between generation of BPDUs by the root bridge.
- Cajun™ P550/P220™ 1
- Switch Operation 1
- Guide Version 4.0 1
- Contents 4
- Documentation Feedback 13
- Online Documentation 13
- Conventions 16
- Audience 17
- Overview of The Contents 17
- Related Documents 18
- Terminology 19
- Cajun P550 Switch Overview 21
- Layer 2 Supervisor Module 22
- Layer 3 Supervisor Module 23
- Media Modules 24
- Cajun P550 Switch Features 25
- Crossbar Switch Fabric 26
- Cajun Routing Overview 27
- Virtual Bridging Functions 28
- VLAN Functions 29
- Hunt Groups 30
- OpenTrunk Technology 31
- Spanning Tree Models 32
- Extensive Fault Tolerance 33
- Buffer and Queue Management 34
- Web-Based Management 34
- Cajun P550 Switch Modules 35
- Overview of the P220 Gigabit 37
- Switch Family 37
- Switch Features 38
- 22.88 Gb/s 39
- Dual Layer Spanning Trees 43
- Configuring the Cajun P550 47
- Logging In to the Web Agent 52
- Setting Up User Accounts 52
- Configuring VTP Snooping 64
- Configuring Fast Start Mode 67
- Setting Up SNMP Communities 69
- Connecting a Modem 71
- Switch and Modem 72
- Enabling SNTP 79
- Setting Summer Time Hours 80
- Setting the System Clock 85
- Installing Redundant Hardware 88
- Replacing an Element 90
- Managing Configuration Files 91
- Copying Configuration Files 92
- Copying Files 93
- Parameter Description Options 94
- Configuring IPX Routing 97
- IPX Datagram Structure 98
- Configuring IPX Interfaces 100
- Creating IPX Static Routes 102
- Deleting IPX Static Routes 103
- Modifying IPX Static Routes 103
- Creating IPX Static Services 103
- Deleting IPX Static Service 104
- Modifying IPX Static Services 105
- Searching the IPX Route Table 106
- Examining the IPX Route Table 107
- Statistic Defines the 111
- Configuring IPX RIP Protocol 113
- (Layer 3) 113
- Parameter Allows you to 115
- Parameter Definition 118
- Configuring IPX SAP Protocol 119
- Creating IPX SAP Filters 120
- Overview 127
- Configuring IP Global Routing 127
- Creating an IP Interface 128
- Enabling IP Routing 130
- IP Multinetting 133
- Configuring Access Lists 134
- Activating Access Lists 139
- Creating IP Static Routes 140
- Creating Static ARP Entries 140
- IP Multicast 141
- Configuring IGMP 142
- Modifying IGMP Interfaces 143
- Configuring DVMRP 144
- Searching the IP ARP Cache 152
- IP Multicast Statistics 153
- Configuring VRRP 168
- Enabling VRRP 169
- Enabling VRRP on an Interface 169
- Displaying VRRP Statistics 170
- Configuring IRDP 171
- Enabling IRDP on an Interface 172
- Configuring LDAP 174
- Viewing LDAP Statistics 176
- Creating an IP Helper Address 177
- Deleting an IP Helper Address 178
- Configuring the RIP Routing 179
- Protocol (Layer 3) 179
- Modifying RIP Interfaces 180
- Interpreting RIP Statistics 182
- Configuring the OSPF Routing 183
- Creating OSPF Areas 185
- Deleting OSPF Areas 185
- Modifying OSPF Areas 186
- Modifying OSPF Interfaces 186
- Creating OSPF Virtual Links 187
- Deleting OSPF Virtual Links 188
- Modifying OSPF Virtual Links 189
- Creating OSPF Summaries 189
- Deleting OSPF Summaries 190
- Modifying OSPF Summaries 190
- Displaying OSPF Statistics 190
- Displaying OSPF Links 192
- Displaying OSPF Neighbors 192
- Viewing LSA Details 197
- Configuring AppleTalk Routing 200
- Editing AppleTalk Interfaces 202
- Viewing AppleTalk Statistics 209
- Parameter Number of 210
- Monitoring and Configuring 217
- Using VLANs, Spanning Tree 223
- Layer 3) 223
- Forwarding Rules 224
- Egress Rules 224
- Port-Based VLANs 224
- VLAN Considerations 225
- Creating a VLAN 225
- Configuring VLAN Parameters 226
- Creating 3Com Mapping Tables 227
- Assigning Ports To VLANs 228
- Spanning Tree Bridge Options 229
- Managing Spanning Trees 229
- Switches 233
- Hunt Group Considerations 234
- Configuring Hunt Groups 234
- Viewing Hunt Group Members 235
- Adding Ports to a Hunt Group 236
- Tuning Your Switch 237
- Managing Buffers and Queues 238
- Managing Address Forwarding 241
- Parameter Defines the 245
- Managing Intelligent 247
- IGMP Snooping 248
- LGMP Server 249
- LGMP Client 249
- CGMP Snooping 249
- Displaying Router Ports 252
- Creating Static Client Ports 257
- Deleting Static Client Ports 257
- Configuring the LGMP Server 258
- Layer 3 Supervisor 268
- Layer 2 Supervisor 268
- Checking Active Alarms 269
- Using the Event Subsystem 269
- Viewing Event Statistics 272
- Setting Log Size 273
- Statistic Indicates Actions 278
- Setting Up a Mirror Port 282
- Downloading the Image 286
- Resetting the Switch 288
- FCC Notice 289
- Supported MIB Groups 291
- Standard MIB 292
- Private MIB 292
- OSPF Version 2.0 293
- IP Interface 293
- IP Version 4.0 and Services 294
- IP Forwarding/Route Table 294
- AppleTalk 295
- IP Access List 295
- Numerics 297
- 10 Index 306
- Index 11 307
- 12 Index 308
- Index 13 309
- 14 Index 310
- Index 15 311
- 16 Index 312
- Index 17 313
- 18 Index 314
- Index 19 315
- 20 Index 316
- Index 21 317
- 22 Index 318
- Index 23 319
- 24 Index 320
- Index 25 321
- 26 Index 322
- Index 27 323
- 28 Index 324
- Index 29 325
- 30 Index 326
- Index 31 327
- Index 33 329
- 34 Index 330
- Index 35 331
- 36 Index 332
- Index 37 333
- 38 Index 334
- Index 39 335
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