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RSTP vs STP w/ portfast 1

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Microbyte

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Feb 20, 2003
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What is the difference? Both does the same thing right? Any pros and cons?
Thanks.

Microbyte
[medal][medal]
 
Portfast is a workaround for when there wasn't Rapid Spanning-tree.

Now that RST is a standard, it will probably be commonly used. Before there wasn't such a standard and the only option was to disable spanning-tree and not have a redundant layer 2 topology.

Portfast helped, where you could have an access port not follow the traditional 802.1d spanning tree Blocking > Listening > Learning > Forwarding states. You could then have regular spanning-tree on your switch to switch or trunk connections and not be worried about DHCP & Novell issues with the Spanning Tree delays.

RST is a different version of spanning tree completly, and Portfast is a hack to spanning tree. :-)
 
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