Tuning STP timers : IPexpert versus IE

From: wim.depauw@getronics.com
Date: Wed Jan 09 2008 - 17:08:33 ARST

Hi,

When you get the following question :

- Configre your switch so that the hosts come online in 34 sec

I would configure it with the following command

- spanning-tree vlan X forward-time 17 sec

I did a test with this command and it seems to work , but in the ipexpert v9 lab 40 they configure it like this :

spanning-tree vlan X forward-time 7 sec , I presume they use also the max-age timer so then the sum will be 34 sec .

BUT

for a normal access-port with portfast configured you will not send any BPDU so you shouldn't count the max-age timer.

I saw an example in the IE workbook and they configure it on my way

 I was wondering if the guru's don't come the same solution how would the would-like-to-be CCIE's find the correct solution :-))

Any opinions ??

PS : A second question , do I need to calculate in this time also the hello time or is this not necessary ?

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