D-Link DXS-5000-54S Emulator - Page 589
qcn cnpv-priority alternate-priority
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5000 Series Layer 2/3 Managed Data Center Switch CLI Reference Guide congestion unaware. This setting disables detection of congestion on the priority. Default The default is Disabled QCN Priorities. Command Mode Data Center Bridging Config 6-9 qcn cnpv-priority alternate-priority The qcn cnpv-priority alternate-priority command is used in the Global Configuration mode in order to globally configure the alternate priority of the selected cnpv-priority, such that when a frame with a dot1p priority equal to the congestion notification priority value is received, the priority value in the frame will be remarked with the alternate priority. The alternate priority is only applied to incoming frames if the dot1p priority of the incoming frame is equal to the Congestion Notification Priority Value (CNPV) priority of the CP and the CP is configured as Edge. The alternate priority setting is used to steer away any traffic that is sent from CN-unaware sources. When entering the Congestion Notification Domain (CND) domain, traffic from non-congestion aware sources is remarked so that those resources granted to the congestion-enabled queues will not be exhausted with traffic from QCN unaware sources. Since those frames are being sent from non-QCN sources, they will not have a CN-TAG. As such, if the frames are mapped to the congestion-enabled queue, they may contribute to congestion and, as a result, trigger the generation of CNMs. This is not helpful for sources that are QCN-unaware. This configuration will be applied to all the ports for which the defense-mode-choice is configured as component. The no command is used in the Global Configuration mode to reset the alternate priority back to the default value. qcn cnpv-priority cnpv-priority alternate-priority non-cnpv-priority no qcn cnpv-priority cnpv-priority alternate-priority Parameters cnpv-priority non-cnpv-priority Default The default is None. Command Mode Global Config The range is 0-7. The range of alternate priority is 0-7. 583
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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
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![](/manual_guide/products/dlink-dxs500054s-emulator-a58686b/589.png)