Advantech EKI-7758F User Manual

 

EKI-7758F User Manual                                                 118 

 

The Rapid Spanning Tree Protocol (RSTP) is an evolution of the Spanning Tree 
Protocol and provides for faster spanning tree convergence after a topology change. 
The system also supports STP and the system will auto detect the connected device 
that is running STP or RSTP protocol. 

 

•  User can view spanning tree information about the Root Bridge. 

•  User can modify RSTP state. After modification, click ‘Apply’ button. 

 

 

•  RSTP mode: user must enable or disable RSTP function before configure the 

    related parameters 
•  Priority (0-61440): a value used to identify the root bridge. The bridge with the 

    lowest value has the highest priority and is selected as the root. If the value changes, 
    user must reboot the switch. The value must be multiple of 4096 according to the 
    protocol standard rule. 
•  Max Age (6-40): the number of seconds a bridge waits without receiving Spanning 

    Tree Protocol configuration messages before attempting a reconfiguration. Enter a 
    value between 6 through 40. 

•  Hello Time (1-10): the time that controls switch sends out the BPDU packet to check 

    RSTP current status. Enter a value between 1 through 10. 

•  Forward Delay Time (4-30): the number of seconds a port waits before changing 

    from its Rapid Spanning-Tree Protocol learning and listening states to the forwarding 
    state. Enter a value between 4 through 30. 

 

 

You can configure path cost and priority of every port. 

•  Select the port in Port column. 

•  Path Cost: The cost of the path to the other bridge from this transmitting bridge at 

    the specified port. Enter a number 1 through 200000000. 

•  Priority: Decide which port should be blocked by priority in LAN. Enter a number 0 

    through 240. The value of priority must be the multiple of 16. 
•  P2P: Some of the rapid state transactions that are possible within RSTP are 

    dependent upon whether the port concerned can only be connected to exactly one 
    other bridge (i.e. it is served by a point-to-point LAN segment), or can be connected 
    to two or more bridges (i.e. it is served by a shared medium LAN segment). This 
    function allows the P2P status of the link to be manipulated administratively. True 

 is P2P enabling. False is P2P disabling. 

•  Edge: The port directly connected to end stations cannot create bridging loop in the 

    network. To configure the port as an edge port, set the port to “True” status. 

•  Non Stp: The port includes the STP mathematic calculation. True is not including 

    STP mathematic calculation. False is including the STP mathematic calculation. 
• Click ’Apply’.