Figure 3 - 61 STP Instance Settings - View window
MSTP Port Information
This window displays the current MSTP Port Information and can be used to update the port configuration for an MSTI ID. If a loop occurs, the MSTP function will use the port priority to select an interface to put into the forwarding state. Set a higher priority value for interfaces to be selected for forwarding first. In instances where the priority value is identical, the MSTP function will implement the lowest MAC address into the forwarding state and other interfaces will be blocked. Remember that lower priority values mean higher priorities for forwarding packets.
To view this window, click L2 Features > Spanning Tree > MSTP Port Information as shown below:
| Figure 3 - 62 MSTP Port Information window |
The following parameters can be viewed or set: | |
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Parameter | Description |
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Port | Use the |
|
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Instance ID | Displays the MSTI ID of the instance being configured. The range is from 0 to 15. An entry of 0 |
| in this field denotes the CIST (default MSTI). |
|
|
Internal Path cost | This parameter is set to represent the relative cost of forwarding packets to specified ports |
| when an interface is selected within a STP instance. The default setting is 0 (auto). There are |
| two options: |
| 0 (auto) – Selecting this parameter for the internalCost will set quickest route automatically |
| and optimally for an interface. The default value is derived from the media speed of the |
| interface. |
| value |
| set the quickest route when a loop occurs. A lower Internal cost represents a quicker |
| transmission. |
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Priority | Enter a value between 0 and 240 to set the priority for the port interface. A higher priority will |
| designate the interface to forward packets first. A lower number denotes a higher priority. |
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|
Click Apply to implement changes made.
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