From: Sean C. (Upp_and_Upp@hotmail.com)
Date: Sat Jun 24 2006 - 18:37:11 ART
It's all in the interpretation. ;-)
But you're getting it. It took me awhile to wrap my head around this one
when it was originally posted.
----- Original Message -----
From: "Koen Zeilstra" <koen@koenzeilstra.com>
To: "Sean C." <Upp_and_Upp@hotmail.com>
Cc: <ccielab@groupstudy.com>
Sent: Saturday, June 24, 2006 9:22 AM
Subject: Re: spanning-tree forward-delay interpretation
From reading through the links you supplied I can conclude the following
two options:
to set the initial time to get a port from blocking into forwarding at
less then 16 seconds use:
spanning-tree forward-time 7 (2 x 7 = 14)
To set the time to get a port from blocking into forwarding after
reconvergence less then 16 seconds use:
spanning-tree forward-time 4
spanning-tree max-age 6
2 x 4 + 6 = 14.
-----------------------
Teamwork is essential -- it allows you to blame someone else.
On Sat, 24 Jun 2006, Sean C. wrote:
| Hi Koen,
|
| Your question is a little differently worded (which makes all the
| difference) than similar questions that have been posted on GS. Your
| question asks more on how to adjust listening AND learning to 5 seconds.
In
| this case, your first answer: spanning-tree vlan 10 forward-time 5, would
be
| correct. Adjusting the forwarding time will adjust BOTH listening and
| learning states, independently, to 5 seconds.
|
| In the past, the question was how to adjust from blocking to forwarding
| state. This question has had some vigorous discussions in the past
| (including my 2 cents). Concerning your question vs. the questions posed
| earlier, in your case, this wouldn't be possible since forward-time has a
| minimum value of 4 seconds. Since you have to use the forward-time value
| for both listening and learning, you couldn't get a time of 5 seconds
since
| 2x4=8. But, I wanted to bring up these past posts to show that your
| question is a little different than what I have seen before.
|
| http://www.groupstudy.com/archives/ccielab/200504/threads.html#01150
| http://www.groupstudy.com/archives/ccielab/200504/msg01150.html
| http://www.groupstudy.com/archives/ccielab/200510/msg01570.html
|
| HTH,
| Sean
|
| ----- Original Message -----
| From: "Koen Zeilstra" <koen@koenzeilstra.com>
| To: <ccielab@groupstudy.com>
| Sent: Saturday, June 24, 2006 6:08 AM
| Subject: spanning-tree forward-delay interpretation
|
|
| Hi Group,
|
| If the question would list to make sure that once a device is connected to
| a switch port in say vlan 10, the time spent for listening and learning
| for topo changes gets shortend to 5 seconds, what would be the most
| appropriate answer and why?
|
|
| option A
|
| spanning-tree vlan 10 forward-time 5
|
|
| option B
|
| spanning-tree vlan 10 forward-time 4
| spanning-tree vlan 10 hello-time 1
|
| thanks in advance,
|
| Koen
|
|
| -----------------------
| (1) Everything depends.
| (2) Nothing is always.
| (3) Everything is sometimes.
|
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