User manual

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3.2.3.5.3 Instance
The VLAN to MST Instance Page enables mapping each VLAN to a Multiple
Spanning Tree Instance (MSTI). For devices to be in the same region they
must have the same mapping of VLANs to MSTIs. Note that the same MSTI
can be mapped to more than one VLAN, but each VLAN can only have one
MST Instance attached to it. Configuration on this page (and all of the MSTP
pages) applies if the system STP mode is MSTP.
Instance ID — Select an MST instance to be displayed and defined
Bridge Priority — Enter the selected spanning tree instance device priority.
Value range is from 0 to 61440, the value must be in steps of 4096. Default
Parameter Description
Path Cost
The contribution of the path through this port, when the port is the
root port, to the total cost of the path to the root for this bridge.
Value range <1-65535>.
Priority
You can make it more or less likely to become the root port, the
lowest number has the highest priority. Value range <0-240>, the
value must be in steps of 16. Default value is 128.
Admin
Edge
Indicates if this port is the edge port. Once configured as an edge
port, the port state immediately transitions from discarded to
forwarding state.
Admin
non-STP
Enable/disable STP on designated port
Admin
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
If MSTP switch has Link STP switch, Enable Migration Check to
Change the port status to MSTP mode when the STP switch
power down or be moved.