Allied Telesis AT-S60 - Manual (Page 506)

AT-S60 Management Software User’s Guide
Section IV: Web Browser Management 505
The RSTP Settings page is shown in Figure 187.
Figure 187 RSTP Settings Page
7. Adjust the settings as desired. The parameters are described below.
Port Priority
This parameter is used as a tie breaker when two or more ports are
determined to have equal costs to the root bridge. The range is 0
to 240, in increments of 16. The default value is 8 (priority value of
128). For a list of the increments, refer to Table 7, Port Priority
Value Increments on page 189.
Port Cost
The spanning tree algorithm uses the cost parameter to decide
which port provides the lowest cost path to the root bridge for the
specified LAN. The range is 0 to 200,000,000.
Enable Migration Check
This parameter (MCHECK) resets an RSTP port, allowing it to send
RSTP BPDUs. When an RSTP bridge receives STP BPDUs on an RSTP
port, the port transmits STP BPDUs. The RSTP port continues to
transmit STP BPDUs indefinitely. Click to reset the RSTP port to
transmit RSTP BPDUs.
Each time an RSTP port is reset by receiving STP BPDUs, you need
to reset the RSTP port, allowing it to send RSTP BPDUs.
Note
MCHECK is only valid when the RSTP mode is enabled. This option
does not apply when the switch is in STP mode.