RSTP is pretty new and just starting to get adopted.

I found this at Cisco's site:

"The Catalyst 4000, 6000, and 6500 series switches do not support Rapid
Spanning Tree Protocol (RSTP) in its native form, but Multiple Spanning Tree
(MST) (802.1s) uses a modified version of RSTP (802.1w). This modified
version is incorporated inside of MST and provides a fast convergence time
in case of a failure in the network."

See here:

http://www.cisco.com/warp/public/473/123.html

A search onf RSTP at Cisco's site would help you find more info.

_______________________________

Priscilla Oppenheimer
www.troubleshootingnetworks.com
www.priscilla.com


[EMAIL PROTECTED] wrote:
> 
> The IEEE specification describes, besides other things, the
> Spanning Tree
> protocol.
> 
> The IEEE 802.1W describes the Rapid Spanning Tree Algorithm and
> Protocol
> (RSTP).   It recommends that the RSTP  be adopted in future MAC
> implementations.
> 
> I was wondering if it is the Spanning Tree used in the
> available switches
> today.
> 
> 




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