3Com 5500G-EI Command Reference Guide - Page 327

RSTP Configuration Commands 331 This command can be used for specifying the current Ethernet Switch to run the Spanning Tree in RSTP mode or in STP compatible mode. Related commands: stp, stp mcheck. Example To set Spanning Tree to work in STP compatible mode, enter the following: system-view System View: return to User View with Ctrl+Z. [SW5500]stp mode stp stp pathcost-standard Syntax stp pathcost-standard { dot1d-1998 | dot1t } undo stp pathcost-standard View System view Parameter dot1d-1998: The Switch calculates the default Path Cost of a port by the IEEE 802.1D-1998 standard. dot1t: The Switch calculates the default Path Cost of a port by the IEEE 802.1t standard. Description Use the stp pathcost-standard command to specify the standard to be used by the Switch in calculating the default Path Cost. Use the undo stp pathcost-standard command to restore the default choice of the standard. By default, the Switch calculates the default Path Cost of a port by the IEEE 802.1t standard. Example To configure the Switch to calculate the default Path Cost of a port by the IEEE 802.1D-1998 standard, enter the following: system-view System View: return to User View with Ctrl+Z. [SW5500]stp pathcost-standard dot1d-1998 To configure the Switch to calculate the default Path Cost of a port by the IEEE 802.1t standard, enter the following: [SW5500]stp pathcost-standard dot1t stp point-to-point Syntax stp point-to-point { force-true | force-false | auto } undo stp point-to-point