Signamax Managed Hardened PoE Industrial DIN-rail Mount Switch - Manual (Page 61)

11 Spanning Tree
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the discarding state and stops forwarding packets (as if it were disconnected from the link).
Path Cost：Set the path cost of a specified port. It ranges from 1 to 200000000, by default, it
is 55.
Priority：Port priority, it is in the range of 0 to 255; the default value is 128.
The lower part of the interface shows the port attributes.
11.2 RSTP

Note: Enable STP in 3 Advanced Configuration , the STP parameters are still effective.
Rapid spanning tree protocol (RSTP) is an optimized version of STP. RSTP allows a newly
elected root port or designated port to enter the forwarding state much quicker under certain
conditions than in STP. As a result, it takes a shorter time for the network to reach the final
topology stability.
Point to Point: Enable or disable Point to Point. It is the link directly connected with two
switches. If it is enabled, it means the link connected to the current port is point to point link,
which enables the port to change to forwarding status.
Migration: For backward compatibility with switches running 802.1d, RSTP selectively sends
802.1d configuration BPDUs and TCN BPDUs on per-port basis.
When a port is initialized, the migration-delay timer is started, and RSTP BPDUs are sent in
this time interval. When this timer is active, the switch processes all BPDUs received on the
port and ignores the protocol type.
If the switch receives an 802.1d BPDU after the port's migration-delay timer is expired, it
assumes that it is connected to an 802.1d switch and starts using only 802.1d BPDUs.
However, if the RSTP switch is using 802.1d BPDUs on a port and receives an RSTP BPDU
after the timer is timed out, it restarts the timer and starts using RSTP BPDUs on that port.
Edge Port: selects Enabled to configure the specified Ethernet port as an edge port. By
default, all Ethernet ports are non-edge ports.
An edge port is such a port that is directly connected to a user terminal instead of another