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4 Configuration
Figure 4.96 - Configuration > Spanning Tree > MST Configuration Identification
MST Configuration Identification Settings:
Configuration Name: A previously configured name set on the Switch to uniquely identify the MSTI (Multiple
Spanning Tree Instance). If a configuration name is not set, this field will show the MAC address to the
device running MSTP. This field can be set in the STP Bridge Global Set-tings window.
Revision Level: This value, along with the Configuration Name will identify the MSTP region configured on
the Switch. The user may choose a value between 0 and 65535 with a default setting of
MSTI ID (1-15): Enter a number between 1 and 15 to set a new MSTI on the Switch.
Type: This field allows the user to choose a desired method for altering the MSTI settings.
Add VID - Select this parameter to add VIDs to the MSTI ID, in conjunction with the VID List
parameter.
Remote VID – Select this parameter to remove VIDs from the MSTI ID, in con-junction with the VID
List parameter.
VID List (1-4094): This field displays the VLAN IDs associated with the specific MSTI.
Click Apply to implement changes made.
Configuration > Spanning Tree > STP Instance Settings
The STP Instance Settings page display MSTIs currently set on the Switch and allows users to change the
Priority of the MSTPs.
To modify an entry on the table, click the Edit button. To view more information about and entry on the table
at the top of the window, click the view button.
The window above contains the following information:
MSTI ID: Enter the MSTI ID in this field. An entry of 0 denotes the CIST (default MSTI).
Priority: Enter the new priority in the Priority field. The user may set a priority value between 0-61440.
Click Apply to implement the new priority setting.
Configuration > Spanning Tree > MSTP Port Information
The MSTP Port Information page 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.
To View the MSTI settings for a particular port, select the Port number and click Find button. To modify the
settings for a particular MSTI Instance, click Edit button, then modify the MSTP Port Setting and click Apply.
DES-1210/ME Series Metro Ethernet Managed Switch User Manual
Figure 4.97 - Configuration > Spanning Tree > STP Instance Settings
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