Task 8: Configure PVST Rapid Spanning Tree Protocol
Cisco has developed several features to address the slow convergence times associated with standard STP. PortFast, UplinkFast, and BackboneFast are features that, when properly configured, can dramatically reduce the time required to restore connectivity dramatically. Incorporating these features requires manual configuration, and care must be taken to do it correctly. The longer term solution is Rapid STP (RSTP), 802.1w, which incorporates these features among others. RSTP-PVST is configured as follows:
S1(config)#spanning-tree mode rapid-pvst
Configure all three switches in this manner.
S2(config)#spanning-tree mode rapid-pvst
S3(config)#spanning-tree mode rapid-pvst
Use the command show spanning-tree summary to verify that RSTP is enabled.
Cisco has developed several features to address the slow convergence times associated with standard STP. PortFast, UplinkFast, and BackboneFast are features that, when properly configured, can dramatically reduce the time required to restore connectivity dramatically. Incorporating these features requires manual configuration, and care must be taken to do it correctly. The longer term solution is Rapid STP (RSTP), 802.1w, which incorporates these features among others. RSTP-PVST is configured as follows:
S1(config)#spanning-tree mode rapid-pvst
Configure all three switches in this manner.
S2(config)#spanning-tree mode rapid-pvst
S3(config)#spanning-tree mode rapid-pvst
Use the command show spanning-tree summary to verify that RSTP is enabled.
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