Rapid Spanning Tree Protocol

Rapid Spanning Tree Protocol (RSTP) is an evolution of the Spanning Tree Protocol (802.1D standard) and provides for faster spanning tree convergence after a topology change.

Figure 6-8 Rapid Spanning Tree Protocol Setting Dialog

Item

Description

DSLAM STP status

Spanning Tree Protocol to be enabled on the Bridge or not.

 

 

Ethernet Port STP status

This specifies the STP status of Gigabit Ethernet interface.

 

Press the ‘Apply’ button to confirm the setting.

 

 

Set Spanning Tree Protocol Status

STP PriorityThis value can determine if the IP-DSLAM will be root switch among all known switches. The switch with the highest priority (lowest numeric value) becomes the Spanning Tree root switch. MAC address (the lowest numeric value) is used to decide root switch if priority is the same.

 

Valid values: 0 ~ 61440 in steps of 4096

 

 

Time Since Top Changed

The time elapsed since the root node of the Spanning Tree has changed. The change of

 

the root node will cause the Spanning Tree to reconfigure.

 

 

Top Changed

The count which the root node has changed in the existing Spanning Tree.

 

 

Designated Root

The root of current Spanning Tree indicating by its MAC address.

 

 

Root Cost

The cost configured in the DSLAM contributing to the path cost leading to the root

 

 

Root Port

The port number of the port which offers the lowest cost path from this bridge to the

 

root bridge.

 

 

Max Age

The maximum age of Spanning Tree Protocol information learned from the network on

 

any port before it is discarded, in units of seconds, when this bridge is the root of the

 

spanning tree.

YML856 Rev3

NCT480 IP DSLAM User Guide

www.netcomm.com.au

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NetComm NCT480 manual Rapid Spanning Tree Protocol