Re: EIGRP K-values

From: James Ventre (messageboard@ventrefamily.com)
Date: Mon May 29 2006 - 17:14:37 ART


>Thanks but this does not really tell you that K2 is the metric for load

Yes, it does. But it requires you to look at the equation and understand
it, rather than just memorizing tidbits. Look at the snippit surrounding
K2.

(K2 * Bandwidth)/(256-load)

If K2 is 0 ..... then outcome of that equation will always be ZERO (in
fractions .... zero over anything is always zero), which means that the
load value is never considered. A Non-Zero value means the outcome will
not be NON-ZERO, thus making a difference.

James

CCIEin2006 wrote:

  Thanks but this does not really tell you that K2 is the metric for
  load. I need something like this: K1 - Bandwidth
  K2 - LoadK3 - DelayK4 - ReliabilityK5 - MTU I'm not sure if the above
  values are correct but I would like to have something along those
  lines.
  On 5/29/06, James Ventre <messageboard@ventrefamily.com> wrote:

    Set K2 to 1 if you want it to consider load.
    http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a008009405c.shtml#rise

    Metric = [K1 * Bandwidth + (K2 * Bandwidth)/(256-load) +
    K3*Delay] *
    [K5/(reliability + K4)]

    The default constant values are K1 = K3 = 1 and K2 = K4 = K5 = 0.

    James

    CCIEin2006 wrote:
> Hello,
>
> Is there a quick command to find out what eigrp K-values
    pertain to the
> different metrics i.e. bandwidth delay reliability load MTU?
>
> Or is this on the documentation CD? I can't find it.
>
> I would like to have a quick reference so that if asked on the
    exam to
> include load and mtu in the EIGRP calculation I would know
    which K-values to
> tweak.
>
> Thanks!
>
>
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