SP Topology - Two Inter-Switch Ports Enough?

Hi All,

I'm putting together my SP topology and I'm torn between a full Dynamips approach or carrying forward with my hybrid Dynamips/c3560 approach.  I see that both the Dynamips and the physical topologies include three inter-switch links.  Due to switchport limitations, I would be able to have two inter-switch connections.  In glancing through the Vol II labs, it doesn't appear as though this would ever be a problem - I don't see a case where all three are ever used simultaneously.  But early on starting out with R&S things looked a lot simpler than they turned out to be.  Thoughts anyone?

Thanks much,

Scott

 

Comments

  • Two links is more than enough ;)

    As far as I remember IE's SP labs even one link would do a job.

    Cheers,

    Seba

  • <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">






    Layer 2 switching is not a large focus of the SP exam, so you should be
    just fine with 2 inter-switch links.



    Good luck in your preparation!



    Brian McGahan, CCIE #8593 (R&S/SP/Security)

    [email protected]

     

    Internetwork Expert, Inc.

    http://www.InternetworkExpert.com

    Toll Free: 877-224-8987 x 705

    Outside US: 775-826-4344 x 705

    Online Community: http://www.IEOC.com

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    svermill wrote:

    Hi All,

    I'm putting together my SP topology and I'm torn between a full
    Dynamips approach or carrying forward with my hybrid Dynamips/c3560
    approach.  I see that both the Dynamips and the physical topologies
    include three inter-switch links.  Due to switchport limitations, I
    would be able to have two inter-switch connections.  In glancing
    through the Vol II labs, it doesn't appear as though this would ever be
    a problem - I don't see a case where all three are ever used
    simultaneously.  But early on starting out with R&S things looked a
    lot simpler than they turned out to be.  Thoughts anyone?

    Thanks much,

    Scott

     







    Internetwork Expert - The Industry Leader in CCIE Preparation

    http://www.internetworkexpert.com



    Subscription information may be found at:

    http://www.ieoc.com/forums/ForumSubscriptions.aspx

  • Thanks much for the insight gents!  Now I just have to decide if I want to re-cable my R&S lab for the SP topology or just go with the 16-ESW approach...




    From:
    Brian McGahan <[email protected]>
    To: [email protected]
    Sent: Wednesday, January 7, 2009 7:50:17 AM
    Subject: Re: [CCIE SP] SP Topology - Two Inter-Switch Ports Enough?



    Layer 2 switching is not a large focus of the SP exam, so you should be just fine with 2 inter-switch links.

    Good luck in your preparation!


    Brian McGahan, CCIE #8593 (R&S/SP/Security)
    [email protected]
     
    Internetwork Expert, Inc.
    http://www.InternetworkExpert.com
    Toll Free: <?XML:NAMESPACE PREFIX = SKYPE /> 877-224-8987  x 705
    Outside US:  775-826-4344  x 705
    Online Community: http://www.IEOC.com
    CCIE Blog: http://blog.internetworkexpert.com


    svermill wrote:

    Hi All,

    I'm putting together my SP topology and I'm torn between a full Dynamips approach or carrying forward with my hybrid Dynamips/c3560 approach.  I see that both the Dynamips and the physical topologies include three inter-switch links.  Due to switchport limitations, I would be able to have two inter-switch connections.  In glancing through the Vol II labs, it doesn't appear as though this would ever be a problem - I don't see a case where all three are ever used simultaneously.  But early on starting out with R&S things looked a lot simpler than they turned out to be.  Thoughts anyone?

    Thanks much,

    Scott

     


    Internetwork Expert - The Industry Leader in CCIE Preparation
    http://www.internetworkexpert.com

    Subscription information may be found at:
    http://www.ieoc.com/forums/ForumSubscriptions.aspx



    Internetwork Expert - The Industry Leader in CCIE Preparation
    http://www.internetworkexpert.com

    Subscription information may be found at:
    http://www.ieoc.com/forums/ForumSubscriptions.aspx
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