Dell PowerConnect 8100 Series User's Configuration Guide - Page 59
Master Failover with Transparent Transition, Nonstop Forwarding on the Stack
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Master Failover with Transparent Transition The stacking feature supports a standby or backup unit that assumes the stack master role if the stack master fails. As soon as a stack master failure is detected, the standby unit initializes the control plane and enables all other stack units with the current configuration. The standby unit maintains a synchronized copy of the running configuration for the stack. Nonstop Forwarding on the Stack The Nonstop Forwarding (NSF) feature allows the forwarding plane of stack units to continue to forward packets while the control and management planes restart as a result of a power failure, hardware failure, or software fault on the stack master and allows the standby switch to quickly takeover as the master. Hot Add/Delete and Firmware Synchronization You can add and remove units to and from the stack without cycling the power. When you add a unit, the Stack Firmware Synchronization feature automatically synchronizes the firmware version with the version running on the stack master. The synchronization operation may result in either an upgrade or a downgrade of firmware on the mismatched stack member. In addition, the running-config on the member is updated to match the master switch. The startup-config on the standby and member switches is not updated to match the master switch. The hardware configuration of every switch is updated to match the master switch (unit number, slot configuration, stack member number, etc.). Security Features Configurable Access and Authentication Profiles You can configure rules to limit access to the switch management interface based on criteria such as access type and source IP address of the management host. You can also require the user to be authenticated locally or by an external server, such as a RADIUS server. For information about configuring access and authentication profiles, see "Configuring Authentication, Authorization, and Accounting" on page 177. Switch Features 59
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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