D-Link DGS-3130 User Manual - Page 88
Switch Roles in a Stack, Primary Master
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DGS-3130 Series Layer 3 Stackable Managed Switch Web UI Reference Guide Figure 4-71 Duplex Ring stacking topology (SFP+) NOTE: For more stacking topologies, please refer to Switch Stacking section in DGS-3130-Series HW Installation Guide. Switch Roles in a Stack Within each of these topologies, each Switch plays a role in the Switch stack. These roles can be set by the user per individual Switch, or if desired, can be automatically determined by the Switch stack. Three possible roles exist when stacking with the Switch. Primary Master - The Primary Master is the leader of the stack. It will maintain normal operations, monitor operations and the running topology of the Stack. This Switch will also assign Stack Unit IDs, synchronize configurations and transmit commands to remaining Switches in the Switch stack. The Primary Master can be manually set by assigning this Switch the highest priority (a lower number denotes a higher priority) before physically assembling the stack, or it can be determined automatically by the stack through an election process. This determines the lowest MAC address 78