Configure a Spanning Tree Profile

To add or edit a spanning tree profile:

  1. Go to Profiles <select a device profile> Network > Spanning Tree.
  2. Configure or modify the Spanning Tree profile parameters as described in Spanning Tree Profile Parameters.
    Table 1. Spanning Tree Profile Parameters
    Parameter Description
    MSTP
    MSTP Enable Select to enable Multiple Spanning Tree Protocol.
    Max Hop Count Define the maximum number of hops for which the BPDU is valid. Set a value in the range 7 – 127. The default value is 20.
    MSTP Config Name Enter a name using 1 – 64 characters to represent the MST region.
    MST Revision Level Define a revision level value in the range 0 – 255 for configuration information purposes. The default value is 0.
    Cisco MSTP Interoperability Set to Enable to enforce interoperability with Cisco‘s version of MSTP over the port. Cisco's version of MSTP is incompatible with standard MSTP. The default value is Disable.
    Hello Time Set a BPDU interval value in the range 1 – 10 (seconds). The default value is 2.
    Forward Delay Set the forwarding delay time to a value in the range 4 – 30 (seconds). The default value is 15.
    Maximum Age Set the maximum amount of time to listen for root bridge using a value in the range 6 – 40 (seconds). The default value is 20.
    Portfast
    PortFast BPDU Filter Select to enable a BPDU filter. MSTP BPDUs are messages that are exchanged when controllers gather information about the network topology. When enabled, PortFast enabled ports do not transmit BPDU messages. The default setting is disabled.
    PortFast BPDU Guard Select to enable BPDU guard. MSTP BPDUs are messages that are exchanged when controllers gather information about the network topology. When enabled, PortFast enabled ports are forced to shut down when they receive BPDU messages. The default setting is disabled.
    Error Disable
    Enable Recovery Select to enable error disable timeout due to BPDU guard.
    Recovery Interval Set the interval after which the port is to be enabled using a value in the range 10 – 1000000 (seconds). The default value is 300.
    Spanning Tree Instance
    Instance Set an instance index using a value in the range 0 – 15. The default value is 1.
    Priority Set a Bridge Priority in increments of 4096, using a value in the range 0 – 61440. This is the priority for this port becoming a designated root. The default rule is, the lower this value, the higher the chance that the port is assigned as a designated root. The default value is 32768.
    Spanning Tree Instance VLANs
    Instance Set an instance index using a value in the range 0 – 15. The default value is 1.
    VLANs Identify the VLANs to be associated with this instance. Valid values are in the range 0 – 4094. Enter multiple VLANs using comma delimiters.
  3. After you have completed configuring the settings, choose from the following actions:
    1. Select Apply to commit the configured settings.
      Note

      Note

      This does not save the settings you configured; it provides a preview of your applied settings. To undo the settings you applied, select Revert.
    2. Select Save to commit and save the configured settings.
      Note

      Note

      If you do not select Save, the settings that you configured are not saved when you move away from the configuration window.