H3C S3100-52P Command Manual

Also see for S3100-52P: Operation manual Operation manual Operation manual Operation manual Operation manual

Contents

Command Manual – MSTPH3C S3100-52P Ethernet Switches Chapter 1 MSTP Configuration Commands1-48As for the configuration of the three time-related parameters (namely, the hello time,forward delay, and max age parameters), the following formulas must be met to preventfrequent network jitter:2 × (forward delay – 1 second) >= max age,Max age >= 2 × (hello time + 1 second).You are recommended to specify the network diameter of the switched network and thehello time parameter by using the stp root primary or stp root secondary command.After that, the three proper time-related parameters are automatically determined byMSTP.Related command: stp timer forward-delay, stp timer hello, and stpbridge-diameter.Example# Set the max age of the switch to 1,000 centiseconds. system-viewSystem View: return to User View with Ctrl+Z.[H3C] stp timer max-age 10001.1.45 stp timer-factorSyntaxstp timer-factor numberundo stp timer-factorViewSystem viewParameternumber: Hello time factor used to set the timeout time. This argument ranges from 1 to10 and defaults to 3.DescriptionUse the stp timer-factor command to set the timeout time of a switch in the form of amultiple of the hello time.Use the undo stp timer-factor command to restore the hello time factor to the defaultvalue.A switch regularly sends protocol packets to its neighboring devices at the intervalspecified by the hello time parameter to test the links. Generally, a switch regards itsupstream switch faulty if the former does receive any protocol packets from the latter in