Dell PowerConnect 8100 User's Configuration Guide - Page 625
MSTP with Multiple Forwarding Paths,
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MSTP with Multiple Forwarding Paths Consider the physical topology shown in Figure 23-4. It might be assumed that MSTI 2 and MSTI 3 would follow the most direct path for VLANs 20 and 30. However, using the default path costs, this is not the case. MSTI operates without considering the VLAN membership of the ports. This results in unexpected behavior if the active topology of an MSTI depends on a port that is not a member of the VLAN assigned to the MSTI and the port is selected as root port. In this configuration, port TE 1/0/11 is selected as the root port and ports TE1/0/12 and TE1/0/13 are blocked. To resolve the issue, set the port path cost of the directly connected links to allow the MSTIs to connect directly. Figure 23-4. MSTP with Multiple Forwarding Paths Configuring the Spanning Tree Protocol 625
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-
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