Dell PowerConnect 8100 User's Configuration Guide - Page 841
Set the Minimum Bandwidth for Each TCG optional, Set the Maximum Bandwidth for each TCG optional
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Page 841 highlights
It is recommended that the sum of minimum bandwidth percentages configured on the CoS queues mapped to any TCG be less than or equal to that of the weight percentage configured for the TCG, so that packets are not dropped due to the congestion in the TCG. In example below, the TCG0 and TCG1 are allocated 30% and 70% of the bandwidth remaining after servicing TCG2 (strict priority) traffic. TCG2 traffic is handled with strict priority but can only consume up to 100% minus the sum of the minimum bandwidths of TCG0 and TCG1 (60%). console(config-if-Te1/0/1)#traffic-class-group weight 30 70 0 7. Set the Minimum Bandwidth for Each TCG (optional) In this step, the minimum bandwidth is configured for each TCG while in congestion. The minimum bandwidth setting ensures that a TCG is serviced during congestion even if a higher priority TCG has an offered load greater than 100% minus the minimum bandwidth assigned to the other TCGs. The minimum bandwidth is enforced on the egress TCG regardless of the scheduling mode and does not directly affect incoming traffic. The minimum bandwidth for a TCG is configured as a percentage of the total bandwidth, and the configured minimum bandwidths may sum to less than 100%. The sum may not exceed 100%. Minimum bandwidth may be configured on a single interface, a range of interfaces, or all interfaces. It is recommended that the minimum bandwidth for a TCG be configured to be less than or equal to the weight of the TCG. CAUTION: Sharing of bandwidth among TCGs is disabled if the sum of the minumum bandwidth settings equals 100%. console(config-if-Te1/0/1)#traffic-class-group min-bandwidth 10 50 0 8. Set the Maximum Bandwidth for each TCG (optional) In this step, the maximum bandwidth for each TCG is configured. The bandwidth allowed for the TCG will never exceed the maximum bandwidth configured, even if configured for strict priority. This limit is configured as a percentage of the total bandwidth and is used to shape egress traffic bursts to no greater than the configured value. The maximum bandwidth may be configured on a single interface, range of interfaces or all interfaces. When configured to be 0, unlimited bandwidth is allowed on the TCG. Configuring Data Center Bridging Features 841
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1,186
-
1,187
-
1,188
-
1,189
-
1,190
-
1,191
-
1,192
-
1,193
-
1,194
-
1,195
-
1,196
-
1,197
-
1,198
-
1,199
-
1,200
-
1,201
-
1,202
-
1,203
-
1,204
-
1,205
-
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