Spanning Tree Interface Policy

Location in GUI: Fabric » Access Policies » Policies » Interface » Spanning Tree Interface

Diagram

Classes

interface_policies (apic.access_policies)

Name	Type	Constraint	Mandatory	Default Value
spanning_tree_policies	List	`[spanning_tree_policies]`	No

spanning_tree_policies (apic.access_policies.interface_policies)

Name	Type	Constraint	Mandatory	Default Value
name	String	Regex: `^[a-zA-Z0-9_.:-]{1,64}$`	Yes
bpdu_filter	Boolean	`true`, `false`	No	`false`
bpdu_guard	Boolean	`true`, `false`	No	`false`

Examples

Example-1: this STP policy named BPDU_FILTER is configured to enable the BPDU filter feature, given that the bdpu_filter attribute is set to true. BPDU Filter will silently drop any BPDUs received from the associated interfaces without any further actions. While it is not disruptive, it essentially equates to disabling STP on the interface and should be used with care to ensure no loops occur.

apic:
  access_policies:
    interface_policies:
      spanning_tree_policies:
        - name: BPDU-FILTER
          bpdu_filter: true

Example-2: this STP policy named BPDU_GUARD is configured to enable the BPDU guard feature, given that the bpdu_guard attribute is set to true. BPDU Guard will error-disable any interfaces from which BPDUs are received for a set time. While it may introduce downtime for the duraiton of the error-disablement, it can ensure the overall stability of the network by guaranteeing that no rogue BPDUs or switches affect the stability of the STP topology.

apic:
  access_policies:
    interface_policies:
      spanning_tree_policies:
        - name: BPDU-FILTER
          bpdu_guard: true