Re: Mind Games - MST

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
>> 
>> 
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> 
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