Re: Mind Games - MST

From: Tony Singh <mothafungla_at_gmail.com>
Date: Tue, 16 Oct 2012 22:32:32 +0100

think the confusion is in the question (agree)

Use the port-priority command on 3560-1 to alter the path that traffic
takes on switches 3560-2, 3560-3, *ok here because we have direct links use
port priority on cat1*

and 3560-4 using interface cost. *confusion is with the* "*and" keyword -
because no direct link to cat1 from cat4 use cost to **manipulate*

Ensure 3560-1 is the root switch for all instances. *use lowest priority on
cat1 for instances 0,1 & 2*

*will try to lab it mate, as this is an empty promise!*

Tony

On 16 October 2012 20:47, Tony Singh <mothafungla_at_gmail.com> wrote:

> Agree
>
> --
> BR
>
> Sent from my iPhone on 3
>
> On 16 Oct 2012, at 17:25, Mohammad Khalil <eng_mssk_at_hotmail.com> wrote:
>
> > You will create two instances 1 and 2
> > The other will be in the default instance 0
> >
> >> Date: Tue, 16 Oct 2012 10:59:47 -0500
> >> Subject: Mind Games - MST
> >> From: marco207p_at_gmail.com
> >> To: ccielab_at_groupstudy.com
> >>
> >> All,
> >>
> >>
> >> I really hate questions like this, hence the reason I have problems with
> >> the CCIE lab.
> >> Help me understand this supposedly easy question.
> >>
> >> s1 =====19/20===== s2
> >> || ||
> >> || ||
> >> 21/22 21/22
> >> || ||
> >> || ||
> >> s3=====19/20======s4
> >>
> >>
> >> *Task 7.1*
> >>
> >> Due to large number of VLANS that exist within the current network, the
> >> decision has been taken to migrate from 802.1 W spanning tree to 802.1S
> >> across all switches. Configure 802.1S spanning tree configuration with
> *3
> >> instances* as follows:
> >>
> >> Region Name: CCIE
> >> Revision: 10
> >> *Instance 3* -- All other VLANs
> >> Instance 1 -- VLAN 10 and 12
> >> Instance 2 -- VLAN 11 and 13
> >>
> >> My Question ???? :
> >> Do you create;
> >> instance 1
> >> instance 2
> >> instance 3
> >>
> >>
> >> *Task 7.2*
> >> With 3560-1 as the core connected switch using 802.1S spanning-tree,
> >> perform *traffic balancing* so that all traffic for VLANs contained in
> >> Instance 1 is sent out of ports fa0/19 and fa0/20, Instance 2 is sent
> out
> >> of portFa0/21 and Fa0/22, and *Instance 0 must not be load balanced*.
> >>
> >> Use the port-priority command on 3560-1 to alter the path that traffic
> >> takes on switches 3560-2, 3560-3, and 3560-4 using interface cost.
> >> Ensure 3560-1 is the root switch for all instances.
> >>
> >> My Question ???? :
> >> Based on Task 7.1, the first part of this task 7.2 would lead you into
> >> only creating instance 2, & instance 1 and leaving instance 0 as the
> >> All-other-VLANs? I would understand that if the put that CIST must be
> >> compatible, this would require me to use instance 0 for all the other
> >> VLANs, but this is not stated in the question so I'm again overreading,
> not
> >> reading enough or something.
> >>
> >> The second part of this task is confusing: What does this want you to
> do.
> >> "apply port-priority only on Sw1, and using Cost on SW2-SW3-SW4"
> >>
> >>
> >>
> >>
> >> Sorry, but I really hate the type of language or lack thereof Cisco
> uses on
> >> the CCIE LAB.
> >>
> >> Thanks,
> >> JS
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net
> >>
> >> _______________________________________________________________________
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> >
> >
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> >
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Received on Tue Oct 16 2012 - 22:32:32 ART

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