RSTP has timers I agree but it s not "timers based" like regular STP.

RSTP uses handshakes to check if a port can FWD or not.

RSTP can converge in a sec .

2010/11/18 Ryan Jensen <[email protected]>

> I'm pretty sure the forward-delay timer is still 15 seconds.
>
> On Thu, Nov 18, 2010 at 10:03 AM, Taqdir Singh <[email protected]>wrote:
>
>> *Hi all,*
>> *
>> *What is the default convergence times when using RSTP?   Unlike STP I
>> understand that RSTP has three timing intervals before it begins to
>> converge.
>>
>> RSTP
>> Hello timer                     >>>   2 seconds
>> MAX-AGE                        >>>   6 seconds
>> Forward-Delay (Learning)   >>>  ? seconds
>>
>> Default convergence time ?
>>
>>
>> STP
>> Hello timer                     >>>   2 seconds
>> MAX-AGE                        >>> 20 seconds
>> Forward-Delay (Listening)  >>> 15 seconds
>> Forward-Delay (Learning)   >>> 15 seconds
>>
>> Default convergence time 50 seconds
>>
>>
>> If I am understanding things correctly
>>
>> 1.The Hello interval are the same as STP which is every 2 seconds.
>>
>> 2. The default Max-Age time for RSTP is 3 times the hello interval or 6
>> seconds.
>>
>> 3.RSTP elminates the listening state however, there is a learning state.
>>
>> What is the default time that RSTP stays in the learning state before is
>> transitions to either forwarding or discarding?
>>
>>
>> _______________________________________________
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>>
>>
>
> _______________________________________________
> For more information regarding industry leading CCIE Lab training, please
> visit www.ipexpert.com
>
>


-- 
Nicolas MICHEL
Ingenieur Réseaux et Securité (CCNA/CCNP)
_______________________________________________
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