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

This Is The DefaultI've removed the spanning-tree vlan 1 forward-time 6

00:12:16: setting bridge id (which=3) prio 32769 prio cfg 32768 sysid 1 (on)
id
8001.000f.f7be.7400
00:12:16: set portid: VLAN0001 Fa1/0/12: new port id 800E
00:12:16: STP: VLAN0001 Fa1/0/12 -> listening
00:12:18: %LINK-3-UPDOWN: Interface FastEthernet1/0/12, changed state to up
00:12:19: %LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet1/0/12, ch
anged state to up
00:12:31: STP: VLAN0001 Fa1/0/12 -> learning
00:12:46: STP: VLAN0001 Fa1/0/12 -> forwarding

Exactly 30 Seconds.

Switch#show spanning-tree

VLAN0001
  Spanning tree enabled protocol ieee
  Root ID Priority 32769
             Address 000f.f7be.7400
             This bridge is the root
             Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

  Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
             Address 000f.f7be.7400
             Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
             Aging Time 300

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------

Fa1/0/12 Desg FWD 19 128.14 P2p

On Sat, May 9, 2009 at 11:37 PM, WW)W WWWW W <eshedalonie_at_gmail.com>
wrote:

> ! Exactly 12 Seconds !I've Checkd that out With Ping from the computer to
> the switch.
>
>
> On Sat, May 9, 2009 at 11:32 PM, WW)W WWWW W <eshedalonie_at_gmail.com>
wrote:
>
>> This is My Output
>> Show Run | i span
>> spanning-tree mode pvst
>> spanning-tree extend system-id
>> spanning-tree vlan 1 forward-time 6
>>
>> Switch#show run int f1/0/12
>> Building configuration...
>>
>> Current configuration : 36 bytes
>> !
>> interface FastEthernet1/0/12
>> end
>>
>> Switch#debug spanning-tree events
>> Spanning Tree event debugging is on
>> Switch#
>>
>> 00:04:18: setting bridge id (which=3) prio 32769 prio cfg 32768 sysid 1
>> (on) id
>> 8001.000f.f7be.7400
>> 00:04:18: set portid: VLAN0001 Fa1/0/12: new port id 800E
>> 00:04:18: STP: VLAN0001 Fa1/0/12 -> listening
>> 00:04:20: %LINK-3-UPDOWN: Interface FastEthernet1/0/12, changed state to
>> up
>> 00:04:21: %LINEPROTO-5-UPDOWN: Line protocol on Interface
>> FastEthernet1/0/12, ch
>> anged state to up
>> 00:04:24: STP: VLAN0001 Fa1/0/12 -> learning
>> 00:04:30: STP: VLAN0001 Fa1/0/12 -> forwarding
>>
>> So From Blocking to Listening - 0 Time
>> Listening to Learning - 6
>> Learning to Forward - 6
>>
>> VLAN0001
>> Spanning tree enabled protocol ieee
>> Root ID Priority 32769
>> Address 000f.f7be.7400
>> This bridge is the root
>> Hello Time 2 sec Max Age 20 sec Forward Delay 6 sec
>>
>> Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
>> Address 000f.f7be.7400
>> Hello Time 2 sec Max Age 20 sec Forward Delay 6 sec
>> Aging Time 300
>>
>> Interface Role Sts Cost Prio.Nbr Type
>> ------------------- ---- --- --------- --------
>> --------------------------------
>>
>> Fa1/0/12 Desg FWD 19 128.14 P2p
>>
>>
>> On Sat, May 9, 2009 at 11:13 PM, Ryan West <rwest_at_zyedge.com> wrote:
>>
>>> 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
>>>
>>>
>>> Blogs and organic groups at http://www.ccie.net
>>>
>>> _______________________________________________________________________
>>> Subscription information may be found at:
>>> http://www.groupstudy.com/list/CCIELab.html
>>>
>>>
>>> Blogs and organic groups at http://www.ccie.net
>>>
>>> _______________________________________________________________________
>>> Subscription information may be found at:
>>> http://www.groupstudy.com/list/CCIELab.html
>>>
>>>
>>> Blogs and organic groups at http://www.ccie.net
>>>
>>> _______________________________________________________________________
>>> Subscription information may be found at:
>>> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Sat May 09 2009 - 23:39:50 ART