Configuring RSTP global parameters
Perform this procedure to configure the RSTP global parameters.
Procedure
- In the navigation tree, expand the following folders: .
- Click RSTP.
- Configure the parameters as required.
- Click Apply.
Globals field descriptions
Use the data in the following table to use the Globals tab.
|
Name |
Description |
|---|---|
|
PathCostDefault |
Specifies the version of the spanning tree default path costs that are used by this bridge. A value of 8021d1998 indicates the use of the 16-bit default path costs from IEEE Std. 802.1d-1998. A value of stp8021t2001 indicates the use of the 32-bit default path costs from IEEE Std. 802.1t. |
|
TxHoldCount |
Specifies the value used by the port transmit state machine to limit the maximum transmission rate. The default is 3. |
|
Version |
Specifies the version of STP that the bridge currently runs. The value stpCompatible indicates that the Spanning Tree Protocol as specified in IEEE 802.1d is in use; rstp indicates that the Rapid Spanning Tree Protocol as specified in IEEE 802.1w is in use. |
|
EnableStp |
Indicates whether the spanning tree protocol is active in this STG. The default is enabled. |
|
Priority |
Specifies the RSTP bridge priority. |
|
BridgeMaxAge |
Specifies the value that all bridges use for MaxAge while this bridge acts as the root. |
|
BridgeHelloTime |
The value that all bridges use for HelloTime while this bridge acts as the root. |
|
BridgeForwardDelay |
Specifies the value that all bridges use for forward delay while this bridge acts as the root. |
|
DesignatedRoot |
Specifies the unique bridge identifier of the bridge recorded as the root in the configuration BPDUs transmitted by the designated bridge for the segment to which the port is attached. |
|
RootCost |
Specifies the cost of the path to the root from this bridge. |
|
RootPort |
Specifies the port number of the port which offers the lowest cost path from this bridge to the root bridge. |
|
MaxAge |
Specifies the maximum age of Spanning Tree Protocol information in hundredths of a second learned from the network on any port before the port is discarded. |
|
HelloTime |
Specifies the amount of time in hundredths of a second between the transmission of configuration bridge PDUs by this node on any port while it is the root of the spanning tree (or trying to become the root). |
|
ForwardDelay |
Specifies a time value, measured in hundredths of a second, controls how fast a port changes its spanning state after moving towards the forwarding state. The value determines how long the port stays in each of the listening and learning states, which precede the forwarding state. This value is also used after a topology change is detected, and is underway, to age all dynamic entries in the forwarding database. |
|
RstpUpCount |
Specifies the number of times the RSTP module is enabled. A trap is generated on the occurrence of this event. |
|
RstpDownCount |
Specifies the number of times the RSTP module is disabled. A trap is generated on the occurrence of this event. |
|
NewRootIdCount |
Specifies the number of times this bridge detects a root identifier change. A trap is generated on the occurrence of this event. |
|
TimeSinceTopology Change |
Specifies the time (in hundredths of a second) since the TcWhile Timer for any port in this bridge was nonzero for Common Spanning Tree. |
|
TopChanges |
Specifies the number of times that there was at least one nonzero TcWhile Timer on this bridge for Common Spanning Tree. |