Dell PowerConnect 5548 User Guide - Page 51

configuration is not saved, for example, dynamically-learned MAC addresses are not saved, but dynamic information is learned quickly and automatically by network traffic. Switching from the Master to the Master Backup The Master Backup replaces the Stack Master if one or more of the following events occur: • The Stack Master fails or is removed from the stack. • Links from the Stack Master to the stacking members fails. • User performs soft switchover via the Web interface or the CLI. Switching between the Stack Master and the Master Backup results in limited service loss. Dynamic tables are relearned if a failure occurs. The Running Configuration file is synchronized between Stack Master and the Master Backup, and continues running on the Master Backup. Replacing Stacking Members If a unit is removed from the stack, and replaced with a unit with the same unit ID, the stack member is configured with the original unit configuration. Otherwise, if the new unit has either more or fewer ports than the previous unit, the results depend on the device type of the new and original units, as defined in Table 6-1: Table 4-1. Port Configurations when Replacing Units New Unit 5548P or 5548 Original Unit 5548P or 5548 5524 or 5524P New Port Configuration Port configurations remain the same. The first 24 Giga (GE) ports receive the respective 5524/P 24 GE port configurations. The 10 G port configurations remain the same. Dell PowerConnect 55xx Systems User Guide 51