RE: STP access port start-up delay or intialization to

Mike,

This is the autoverify output:

! "show spanning-tree root" on SW1 should look like (Root ID will differ):

                                        Root Hello Max Fwd
Vlan Root ID Cost Time Age Dly Root Port
VLAN0001 1 0013.806d.d180 0 2 20 16
VLAN0100 100 0013.806d.d180 0 2 20 16
VLAN0145 145 0013.806d.d180 0 2 20 16

(My output is below, thought I would mention this since it's not obvious via
email)
show spanning-tree root

                                        Root Hello Max Fwd
Vlan Root ID Cost Time Age Dly Root Port
---------------- -------------------- --------- ----- --- --- ------------
VLAN0001 1 0016.4736.ef80 0 2 20 6
VLAN0013 13 0016.4736.ef80 0 2 20 6
VLAN0100 100 0016.4736.ef80 0 2 20 6
VLAN0145 145 0016.4736.ef80 0 2 20 6

You can't see from here, but I was marked incorrect for using a forward-time
of 6. My sixes have a red line through them.

-ryan

From: Mike Leske [mailto:mike.leske_at_googlemail.com]
Sent: Saturday, May 09, 2009 4:09 PM
To: Ryan West
Cc: Anbu; Cisco certification
Subject: Re: STP access port start-up delay or intialization to forwarding
delay

Hi Ryan,

why not going with:

spanning-tree vlan x forward-time 6
20 + 6 + 6 = 32

Mike

2009/5/9 Ryan West <rwest_at_zyedge.com<mailto:rwest_at_zyedge.com>>
Anbu,

Thanks for the replay, I understand those phases on paper. What I'm trying
to
figure out when this actually happens and what type of wording in a question
might key me to take into account. For example, the ASET lab asks this:

Configure switch 1 as the STP root and set the following parameters:

* Root priority of zero (0)

* An access port start-up delay, due to Spanning Tree, of 32 seconds.

Which in this case means set the forward-time to 16 seconds and priority of
associated VLANs to 0. What I'm trying to figure out is when I need to
account for blocking as well.

-ryan

From: Anbu [mailto:ksanpu_at_gmail.com<mailto:ksanpu_at_gmail.com>]
Sent: Saturday, May 09, 2009 3:29 PM
To: Ryan West
Cc: Cisco certification
Subject: Re: STP access port start-up delay or intialization to forwarding
delay

From blocking to listening - 20 Sec
          Listening to Learning - 15 sec
          Learning to Forwarding - 15 sec

So total 50 sec.
On Sat, May 9, 2009 at 7:33 PM, Ryan West
<rwest_at_zyedge.com<mailto:rwest_at_zyedge.com><mailto:rwest_at_zyedge.com<mailto:rwe
st_at_zyedge.com>>> wrote:
Hello,

I was going through some of the ASET exams and I was wondering if someone
might have some insight on key word detection for an STP question. What
wording would key you into accounting for blocking time when taking a port
from <state described in question> to forwarding?

Thanks,

-ryan

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Received on Sat May 09 2009 - 16:13:07 ART