Yeah, 7 would be correct.  Max age of 20 + 2x forward delay of 7 

------Original Message------
From: jmangawang
Sender: [email protected]
To: CCIE OSL
Subject: [OSL | CCIE_RS] MST and RSTP forward-time question
Sent: Jul 5, 2009 11:06 AM

Regarding RSTP timers, if I'm given a directive to make sure a port
comes online in 34 seconds, do I set the "spanning-tree forward-time
#" to 14?  Or to 7?  I know for plain old STP (PVST+), I'd use 7 (7
for listening, another 7 for learning).  But for RSTP, since it
doesn't technically have a listening state anymore, do I still have to
consider it in the calculation?

PG in practice lab Vol 3, Lab 10, Task 1.4 said to set it to 7.  I
just want to make sure I do it the right way.


Regards,

Joe Astorino 
CCIE #24347 (R&S)
Sr. Support Engineer – IPexpert, Inc.
URL: http://www.IPexpert.com
 

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