Configuring RSTP 83

#

stp enable

#

vlan-vpn tunnel

#

interface Ethernet1/0/1

port access vlan 10 vlan-vpn enable

#

interface Ethernet1/0/2

port link-type trunk

port trunk permit vlan all

#

4 Configuration on Switch D

#

stp enable

#

vlan-vpn tunnel

#

interface Ethernet1/0/2

port access vlan 10 vlan-vpn enable

 

#

 

interface Ethernet1/0/1

 

port link-type trunk

 

port trunk permit vlan all

 

#

 

 

Configuring RSTP

The Rapid Spanning Tree Protocol (RSTP) optimizes STP. RSTP allows a newly

 

elected root port or designated port to enter the forwarding state much quicker

 

under certain conditions than in STP. As a result, it takes a shorter time for the

 

network topology to become stable.

 

Although RSTP support rapid network convergence, it has the same drawback as

 

STP does: all bridges within a LAN share the same spanning tree, so redundant

 

links cannot be blocked based on VLANs, and the packets of all VLANs are

 

forwarded along the same spanning tree.

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3Com 4200G, 5500G, 4210 manual Configuring Rstp, Network topology to become stable, Forwarded along the same spanning tree