Spanning Tree Management Help
The RSTP is a standardized method for avoiding loops in switched networks.
Use this page to change the parameters this switch uses when chosen to be the RSTP root.
Current RSTP Root
These fields display the RSTP values defined for the switch currently acting as the root.
RSTP Options
Define the following parameters to take effect when this switch is acting as the root:
- 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 you change the value, you must reboot the switch assign path priority number. The value must be multiple of 4096 according to the protocol standard rule.
- Max Age Time(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.
PerPort Parameters
- 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.
- Admin 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.
- Admin 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.
- Admin Non Stp
- The port includes the STP mathematic calculation. True is not including STP mathematic calculation. False is including the STP mathematic calculation.
Note: Each switch in a RSTP adopts the Hello, Delay, and Max age parameters of the root bridge, regardless of how it is configured.