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DGS-1520 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
102
databases, such as ARP, will also be cleared. Then the Backup Master will begin backing up the Primary Master when
the database synchronization has been completed by the stack.
If the Primary Master is removed, the Backup Master will assume the Primary Master's role and a new Backup Master
will be chosen using the election process. Switches in the stack will clear the configuration of the unit removed, and
dynamically learned databases, such as ARP, will also be cleared. The new Primary Master will inherit the MAC and
IP address of the previous Primary Master to avoid conflict within the stack and the network itself.
If both the Primary Master and the Backup Master are removed, the election process is immediately initiated, and a
new Primary Master and Backup Master are elected. Switches in the stack will clear the configuration of the units that
have been removed, and dynamically learned databases, such as ARP, will also be cleared. Static Switch
configuration still remains in the database of the remaining Switches in the stack and those functions will not be
affected.
NOTE: If there is a Box ID conflict when the stack is in the discovery phase, the device will enter a
special standalone topology mode. Users can only get device information, configure Box
IDs, save and reboot. All stacking ports will be disabled and an error message will be
produced on the local console port of each device in the stack. Users must reconfigure Box
IDs and reboot the stack to rectify the problem.
Physical Stacking
This window is used to display and configure the physical stacking settings.
To view the following window, click Management > Stacking > Physical Stacking, as shown below:
Figure 4-86 Physical Stacking Window
The fields that can be configured in Physical Stacking are described below:
Parameter Description
Stacking Mode
Select this option to enable or disable the stacking mode.
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