Spanning Tree Configuration Page Options

  1. Select Configure>Switching>Spanning Tree.

    The Spanning Tree configuration page appears. Table 106 explains the contents of this page.

  2. Click one of the following:
    • Add—Adds a new or duplicate Spanning Tree configuration. Enter information as specified in Table 107.
    • Edit—Edits a selected Spanning Tree configuration.
    • Delete—Deletes the selected Spanning Tree configuration.
  3. Click one:
    • OK—Saves the configuration and returns to the main configuration page.
    • Commit Options>Commit—Commits the configuration and returns to the main configuration page.
    • Cancel—Cancels your entries and returns to the main configuration page.

Table 106: Spanning Tree Configuration Page

Field

Function

Protocol Name

Displays the Spanning Tree Protocol.

State

Displays the state of the protocol.

Bridge Priority

Displays the bridge priority details. The bridge priority determines which bridge is elected as the root bridge. If two bridges have the same path cost to the root bridge, the bridge priority determines which bridge becomes the designated bridge for a LAN segment.

VLAN members

Displays the VLAN member details.

Details of Protocol

General

State

Displays the state of the protocol.

Bridge Priority

Displays the bridge priority details. The bridge priority determines which bridge is elected as the root bridge. If two bridges have the same path cost to the root bridge, the bridge priority determines which bridge becomes the designated bridge for a LAN segment.

Hello Time

Displays the time interval, in seconds, at which the root bridge transmits configuration BPDUs.

Forward Delay

Displays the number of seconds that an interface waits before changing from the spanning-tree learning and listening states to the forwarding state.

Max Age

Displays the maximum aging time, in seconds, for all MST instances. The maximum aging time is the number of seconds that a switch waits without receiving spanning-tree configuration messages before attempting a reconfiguration.

Interfaces

Interface Name

Displays the interface for the Spanning Tree Protocol type.

Cost

Displays the link cost to control the designated bridge and the designated interface.

State

Displays the state of the protocol.

Priority

Displays the interface priority to control which interface is elected as the root port.

Edge

Displays the edge interface.

Mode

Displays the link mode.

Table 107: Add Spanning Tree Configuration Details

Field

Function

Action

STP

Protocol Name

Displays the Spanning Tree Protocol.

View only.

Disable

Specifies whether to disable STP on the interface.

To enable this option, select the check box.

BPDU Protect

Specifies that BPDU blocks are to be processed.

To enable this option, select the check box.

Bridge Priority

Specifies the bridge priority. The bridge priority determines which bridge is elected as the root bridge. If two bridges have the same path cost to the root bridge, the bridge priority determines which bridge becomes the designated bridge for a LAN segment.

Select a value.

Forward Delay

Specifies the number of seconds that an interface waits before changing from the spanning-tree learning and listening states to the forwarding state.

Enter a value from 4 through 30 seconds.

Hello Time

Specifies the time interval, in seconds, at which the root bridge transmits configuration BPDUs.

Enter a value from 1 through 10 seconds.

Max Age

Specifies the maximum aging time, in seconds, for all MST instances. The maximum aging time is the number of seconds a switch waits without receiving spanning-tree configuration messages before attempting a reconfiguration.

Enter a value from 6 through 40 seconds.

RSTP

Protocol Name

Displays the Spanning Tree Protocol.

View only.

Disable

Specifies whether RSTP must be disabled on the interface.

To enable this option, select the check box.

BPDU Protect

Specifies that BPDU blocks are to be processed.

To enable this option, select the check box.

Bridge Priority

Specifies the bridge priority. The bridge priority determines which bridge is elected as the root bridge. If two bridges have the same path cost to the root bridge, the bridge priority determines which bridge becomes the designated bridge for a LAN segment.

Select a value.

Forward Delay

Specifies the number of seconds that a port waits before changing from the spanning-tree learning and listening states to the forwarding state.

Enter a value from 4 through 30 seconds.

Hello Time

Specifies the hello time, in seconds, for all MST instances.

Enter a value from 1 through 10 seconds.

Max Age

Specifies the maximum aging time, in seconds, for all MST instances. The maximum aging time is the number of seconds that a switch waits without receiving spanning-tree configuration messages before attempting a reconfiguration.

Enter a value from 6 through 40 seconds.

MSTP

Protocol Name

Displays the Spanning Tree Protocol.

View only.

Disable

Specifies whether MSTP must be disabled on the interface.

To enable this option, select the check box.

BPDU Protect

Specifies that BPDU blocks are to be processed.

To enable this option, select the check box.

Bridge Priority

Specifies the bridge priority. The bridge priority determines which bridge is elected as the root bridge. If two bridges have the same path cost to the root bridge, the bridge priority determines which bridge becomes the designated bridge for a LAN segment.

Select a value.

Forward Delay

Specifies the number of seconds that a port waits before changing from the spanning-tree learning and listening states to the forwarding state.

Enter a value from 4 through 30 seconds.

Hello Time

Specifies the hello time, in seconds, for all MST instances.

Enter a value from 1 through 10 seconds.

Max Age

Specifies the maximum aging time for all MST instances. The maximum aging time is the number of seconds that a switch waits without receiving spanning-tree configuration messages before attempting a reconfiguration.

Enter a value from 6 through 40 seconds.

Configuration Name

Specifies the MSTP region name carried in the MSTP BPDUs.

Enter a name.

Max Hops

Specifies the maximum number of hops that a BPDU can be forwarded in the MSTP region

Enter a value from 1 through 255.

Revision Level

Specifies the revision number of the MSTP region configuration.

Enter a value from 0 through 65535.

MSTI

MSTI Id

Specifies the MSTI identifier. MSTI IDs are local to each region, so you can reuse the same MSTI ID in different regions.

The following options are available:

  • Add—Creates a MSTI.
  • Edit—Edits an existing MSTI.
  • Delete—Deletes an existing MSTI.

Select any of the available option.

Bridge Priority

Specifies the bridge priority. The bridge priority determines which bridge is elected as the root bridge. If two bridges have the same path cost to the root bridge, the bridge priority determines which bridge becomes the designated bridge for a LAN segment.

Select a value.

VLAN

Specifies the VLANs for the MSTI.

The following options are available:

  • Add—Selects VLANs from the list.
  • Remove—Deletes the selected VLAN.

Select any of the available option.

Interfaces

Specifies the interface for the MSTP protocol.

The following options are available:

  • Add—Selects interfaces from the list.
  • Edit—Edits the selected interface.
  • Remove—Deletes the selected interface.

Select any of the available option.

Interfaces

Interface Name

Specifies the interface for the Spanning Tree Protocol type.

Select an interface.

Cost

Specifies the link cost to control the designated bridge and the designated interface.

Enter a value from 1 through 200,000,000.

Priority

Specifies the interface priority to control which interface is elected as the root port.

Select a value.

Edge

Specifies whether to configure the interface as an edge interface. Edge interfaces immediately transition to a forwarding state.

Select this option to configure the interface as an edge interface.

Mode

Specifies the link mode.

The following options are available:

  • Point to Point—For full-duplex links.
  • Shared—For half-duplex links.

Select any of the available option.

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