Configuring Loop Guard - Dell S4820T Configuration Manual

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Figure 125. STP Loop Guard Prevents Forwarding Loops

Configuring Loop Guard

Enable STP loop guard on a per-port or per-port channel basis.

Dell Networking OS Behavior: The following conditions apply to a port enabled with loop guard:

Loop guard is supported on any STP-enabled port or port-channel interface.

Loop guard is supported on a port or port-channel in any spanning tree mode:

Spanning Tree Protocol (STP)

Rapid Spanning Tree Protocol (RSTP)

Multiple Spanning Tree Protocol (MSTP)

Per-VLAN Spanning Tree Plus (PVST+)

Spanning Tree Protocol (STP)