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DGS-1520 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
103
Parameter Description
Stack Preempt
Select this option to enable or disable preemption of the master role when a unit
with a higher priority is added to the Switch.
Trap State
Select this option to enable or disable stacking related SNMP traps.
Click the Apply button to accept the changes made.
The fields that can be configured in Stack ID are described below:
Parameter Description
Current Unit ID
Select the unit ID of the Switch in the stack.
New Box ID Select the new box ID for the Switch that is selected in the Current Unit ID field.
The range is from 1 to 8. Auto will automatically assign a box number to the
Switch in the Switch stack.
Priority
Enter the priority of the Switch stacking unit. The range is from 1 to 63.
Click the Apply button to accept the changes made.
Stacking Bandwidth
This window is used to display and configure the stacking bandwidth settings. Physical stacking needs to be enabled
and can be configured to support either a 2-port or a 4-port stacking configuration.
• 2-Port-10G-Base-T/2-Port (SFP+) - A full-duplex speed of up to 40Gbps is used between two Switches.
• 4-port - A full-duplex speed of up to 80Gbps is used between two Switches using four physical ports
aggregated into two virtual stacking ports.
SIO1 is a logical stacking port pair and SIO2 is a logical stacking port pair. A logical stacking port pair must always be
connected to the same Switch in the stack. Splitting logical stacking port pairs between different Switches in the stack
might not guarantee a stable stacking connection.
The following table lists the logical stacking port pair for each stacking configuration:
Switch
2-Port 4-Port
SIO1 SIO2 SIO1 SIO2
DGS-1520-28
Port 25 or 27 Port 26 or 28 Ports 25 and 26 Ports 27 and 28
DGS-1520-28MP
Port 25 or 27 Port 26 or 28 Ports 25 and 26 Ports 27 and 28
DGS-1520-52
Port 49 or 51 Port 50 or 52 Ports 49 and 50 Ports 51 and 52
DGS-1520-52MP
Port 49 or 51 Port 50 or 52 Ports 49 and 50 Ports 51 and 52
NOTE: The stacking bandwidth must be configured before the Switch is stacked with other
Switches.
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