Re: Root Bridge

Hey Joe

Vlan 3 is only L2. no SVI created.
This suprised me...

On Tue, Apr 12, 2011 at 12:50 AM, Joseph L. Brunner <joe_at_affirmedsystems.com
> wrote:

> This forum is for CCIE Lab candidates who have already passed written exam.
>
> I seriously suggest you go back and review the theory of spanning-tree a
> little more. The fact you are unsure of this reveals key gaps in your
> knowledge that will cause you to have issues on the lab.
>
> In short to answer your question, Was Vlan 3 created in SWA's database?
>
> SWA#Show vlan
>
> -Joe
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Tony claros
> Sent: Monday, April 11, 2011 5:32 PM
> To: Cisco certification
> Subject: Root Bridge
>
> Hi
>
> Switch A being Server and got Spanning-tree priority 0 Switch B is client
> There is dot1q trunk between Switch A and Switch B
>
>
> Why do switch B indicates Root bridge for: VLAN0003
>
> SWA# sh spanning-tree sum
> Switch is in pvst mode
> Root bridge for: VLAN0009, VLAN0010, VLAN0020, VLAN0030, VLAN0040-VLAN0041
> Extended system ID is enabled
> Portfast Default is enabled
> PortFast BPDU Guard Default is disabled Portfast BPDU Filter Default is
> enabled
> Loopguard Default is disabled
> EtherChannel misconfig guard is enabled
> UplinkFast is disabled
> BackboneFast is disabled
> Configured Pathcost method used is short
> Name Blocking Listening Learning Forwarding STP Active
> ---------------------- -------- --------- -------- ---------- ----------
> VLAN0009 0 0 0 6 6
> VLAN0010 0 0 0 6 6
> VLAN0020 0 0 0 6 6
> VLAN0030 0 0 0 1 1
> VLAN0040 0 0 0 6 6
> VLAN0041 0 0 0 6 6
> ---------------------- -------- --------- -------- ---------- ----------
> 6 vlans 0 0 0 31 31
>
>
>
> *********************************************************
>
> SWB# sh spanning-tree sum
> Switch is in pvst mode
> Root bridge for: VLAN0003
> Extended system ID is enabled
> Portfast Default is enabled
> PortFast BPDU Guard Default is disabled Portfast BPDU Filter Default is
> enabled
> Loopguard Default is disabled
> EtherChannel misconfig guard is enabled
> UplinkFast is disabled
> BackboneFast is disabled
> Configured Pathcost method used is short
> Name Blocking Listening Learning Forwarding STP Active
> ---------------------- -------- --------- -------- ---------- ----------
> VLAN0003 1 0 0 0 1
> VLAN0009 1 0 0 5 6
> VLAN0010 1 0 0 5 6
> VLAN0020 1 0 0 5 6
> VLAN0030 1 0 0 5 6
> VLAN0040 1 0 0 5 6
> ---------------------- -------- --------- -------- ---------- ----------
> 6 vlans 6 0 0 25 31
>
>
> **********************************************
>
>
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Received on Tue Apr 12 2011 - 00:59:48 ART