Dell PowerConnect 3348 User's Guide - Page 13
Stack Members and Unit ID, Removal of a Stacking Unit - powerconnect 3324
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During the stacking setup, one device is selected by the network administrator as the stack master, while all other devices are selected as stack members and assigned a unique Unit ID. PowerConnect 3324/3348 stacks provide across-the-stack Layer 2 functionality including: • Switching • Trunking • Port Mirroring • VLANs For example, VLANs can be configured from ports belonging to different stack members, or configure port mirroring from a second stack member to a third stack member. Applications running in a stacking configuration are centralized. For example, the Spanning Tree Protocol for the entire stack runs on the master unit. Device software is downloaded separately for each stack member. PowerConnect 3324/3348 stacking architecture provides dynamic learning for the stacking topology, while detecting and reconfiguring the ports with minimal operational impact in the event of: • Unit Failure • Inter-unit Link Loss • Unit Insertion • Removal of a Stacking Unit Stack Members and Unit ID The stacking operation mode is determined during the Boot process. PowerConnect 3324/3348 units are shipped with a default Unit ID of one. The Unit ID is essential to the stacking configuration. If a stack member reboots without a stacking module, the device operates as a stand-alone until the device is reset. If a PowerConnect 3324/3348 unit is operating as a stand-alone unit, all stacking LEDs are off. The Unit ID is not erased and remains valid if the unit is reconnected to a stack. NOTE: The stacking module must be inserted into port G2 for the stack to operate. If the stacking module is inserted in port G1, a warning message is displayed on the console. Over view 13