From: James Ventre (messageboard@ventrefamily.com)
Date: Mon May 29 2006 - 18:00:03 ART
The (Minimum) MTU is not considered in metric calculation. Minimum MTU
is carried in advertisements though.
James
CCIEin2006 wrote:
Fair enough..but I cannot tell where MTU plugs into the equation...
On 5/29/06, James Ventre <messageboard@ventrefamily.com> wrote:
>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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