PLANET WGSW-48000 - Manual (Page 77)

User’s Manual of WGSW-48000
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• P2P Indicates if this port is a point-to-point link. If you connect a port to another port
though a point-to-point link and the local port becomes a designated port, it
negotiates a rapid transition with the other port to ensure a loop-free topology.
• Migration Check Re-checks the appropriate BPDU format to send on this port.
• Path Cost Displays the cost of this port for the specified MST instance.
"Cost" means the contribution of this port to the path cost of paths towards the
spanning tree root which include this port.
• Port Priority Displays the priority of this port for the specified MST instance.
4.5.5 MSTP Instance
MSTP operation maps VLANs into STP instances. Packets assigned to various VLANs are transmitted along different paths
within Multiple Spanning Tree Regions (MST Regions). Regions are one or more Multiple Spanning Tree bridges by which
frames can be transmitted. In configuring MST, the MST region to which the device belongs is defined. A configuration consists
of the name, revision, and region to which the device belongs.
Figure 4-5-8 MSTP Instance
The page includes the following fields:
Object Description
• MST Instance Specifies the instance to configure.
This system can support up to 16 MSTP instances.
• MST ID Specifies the instance identifier. the range is 0 to 4094.
• VLAN Range Specifies vlan-range, the range is 1 to 4094. To specify a VLAN range, use a
hyphen; for example, 1-63 means VLANs 1 through 63. To specify a VLAN