xStack® DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch Web UI Reference Guide
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Edge Choosing the True parameter designates the port as an edge port. Edge ports cannot
create loops, however an edge port can lose edge port status if a topology change
creates a potential for a loop. An edge port normally should not receive BPDU
packets. If a BPDU packet is received, it automatically loses edge port status.
Choosing the False parameter indicates that the port does not have edge port status.
Alternatively, the Auto option is available.
Restricted Role Use the drop-down menu to toggle Restricted Role between True and False. If set to
True, the port will never be selected to be the Root port. The default is False.
Click the Apply button to accept the changes made.
MST Configuration Identification
This window allows the user to configure a MSTI instance on the Switch. These settings will uniquely identify a
multiple spanning tree instance set on the Switch. The Switch initially possesses one CIST, or Common Internal
Spanning Tree, of which the user may modify the parameters for but cannot change the MSTI ID for, and cannot be
deleted.
To view the following window, click L2 Features > Spanning Tree > MST Configuration Identification, as shown
below:
Figure 4-37 MST Configuration Identification window
The fields that can be configured are described below:
Parameter Description
Configuration Name
This name uniquely identifies the MSTI (Multiple Spanning Tree Instance). If a
Configuration Name is not set, this field will show the MAC address to the device
This value, along with the Configuration Name, identifies the MSTP region
configured on the Switch.
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.
The user has two choices:
Add VID - Select this parameter to add VIDs to the MSTI ID, in conjunction with the
VID List parameter.
Remove VID - Select this parameter to remove VIDs from the MSTI ID, in con-
junction with the VID List parameter.
VID List
This field is used to specify the VID range from configured VLANs set on the
Switch. Supported VIDs on the Switch range from ID number 1 to 4094.
Click the Apply button to accept the changes made for each individual section.
Click the Edit button to re-configure the specific entry.
Click the Delete button to remove the specific entry.
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