Dell PowerConnect 8100 User's Configuration Guide - Page 643
Configuring Optional STP Features, Beginning in Privileged EXEC mode, use the following commands
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Command show spanning-tree [detail] [active | blockedports] Purpose View information about spanning tree and the spanning tree configuration on the switch. Configuring Optional STP Features Beginning in Privileged EXEC mode, use the following commands to configure the optional STP features on the switch or on specific interfaces. Command Purpose configure Enter global configuration mode. spanning-tree bpdu flooding Allow the flooding of BPDUs received on non-spanningtree ports to all other non-spanning-tree ports. spanning-tree portfast Enable PortFast on all switch ports. spanning-tree portfast Prevent ports configured in PortFast mode from sending bpdufilter default BPDUs. spanning-tree loopguard Enable loop guard on all ports. default spanning-tree bpduprotection Enable BPDU protection on the switch. interface interface Enter interface configuration mode for the specified interface. The interface variable includes the interface type and number, for example tengigabitethernet 1/0/3 or portchannel 4. You can also specify a range of interfaces with the interface range command, for example, interface range tengigabitethernet 1/0/8-12 configures interfaces 8, 9, 10, 11, and 12. The range keyword is also valid for LAGs (port channels). spanning-tree autoportfast Set the port to auto portfast mode. This enables the port to become a portfast port if it does not see any BPDUs for 3 seconds. spanning-tree guard {root | loop | none} Enable loop guard or root guard (or disable both) on the interface. Configuring the Spanning Tree Protocol 643
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1,206
-
1,207
-
1,208
-
1,209
-
1,210
-
1,211
-
1,212
-
1,213
-
1,214
-
1,215
-
1,216
-
1,217
-
1,218
-
1,219
-
1,220
-
1,221
-
1,222
-
1,223
-
1,224
-
1,225
-
1,226
-
1,227
-
1,228
-
1,229
-
1,230
-
1,231
-
1,232
-
1,233
-
1,234
-
1,235
-
1,236
-
1,237
-
1,238
-
1,239
-
1,240
-
1,241
-
1,242
-
1,243
-
1,244
-
1,245
-
1,246
-
1,247
-
1,248
-
1,249
-
1,250
-
1,251
-
1,252
-
1,253
-
1,254
-
1,255
-
1,256
-
1,257
-
1,258
-
1,259
-
1,260
-
1,261
-
1,262
-
1,263
-
1,264
-
1,265
-
1,266
-
1,267
-
1,268
-
1,269
-
1,270
-
1,271
-
1,272
-
1,273
-
1,274
-
1,275
-
1,276
-
1,277
-
1,278
-
1,279
-
1,280
-
1,281
-
1,282
-
1,283
-
1,284
-
1,285
-
1,286
-
1,287
-
1,288
-
1,289
-
1,290
-
1,291
-
1,292
-
1,293
-
1,294