Stp Bridge Global Settings - D-Link DGS-3600 Series User Manual

Regulations and Restrictions for the Loopback Detection Function
All three versions of STP (STP, RSTP and MSTP) can enable this feature.
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May be configured globally (STP Global Bridge Settings), or per port (MSTP Port Information).
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Neighbor switches of the Switch must have the capability to forward BPDU packets. Switches that the fail to meet this
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requirement will disable this function for the port in question on the Switch.
Loopback Detection is globally enabled for the switch, yet the port-by-port default setting is disabled.
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The default setting for the Loopback timer is 60 seconds.
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This setting will only be operational if the interface is STP-enabled.
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The Loopback Detection feature can only prevent BPDU loops on the Switch designated ports. It can detect a loop condition
occurring on the user's side connected to the edge port, but it cannot detect the Loopback condition on the elected root port of STP
on another switch.

STP Bridge Global Settings

To open the following window, open Spanning Tree in the L2 Features folder and click the STP Bridge Global Settings link.
xStack DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch
Figure 7- 36. STP Bridge Global Settings window – RSTP (default)
Figure 7- 37. STP Bridge Global Settings window - MSTP
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