Thanks for that link Glen,
It looks now like its me against the world.
In the UK I would call K5 the nominator of this part
of the equation and "reliability + k4" would be the
denominator.
If the nominator = 0 then the expression k5/(rel + k4)
will be 0. As a result when multiplying by anything on
the left will result in 0.
I'm wondering if there is a difference in algebraic
notation batween USA and UK or if I need to go back to
school ?
Regards,
Phil.
--- Glenn Johnson <[EMAIL PROTECTED]> wrote: >
http://www.cisco.com/warp/public/103/eigrp1.html
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of
> Phil Barker
> Sent: Monday, January 15, 2001 11:59 AM
> To: cisco GroupStudy
> Subject: CertificationZone White Paper EIGRP ?
>
>
>
> I'm having trouble with the equation referenced on
> page 5 (A4) concerning the metric calculation.
> Ref Don Dettmore.
>
> If this equation is correct as it stands and
> K2=K4=K5=0
> Then the Right Side of the equation will be 0, which
> when multiplied by whatever on the left side will
> equal 0. i.e metric = 0. I'm guessing a little that
> these two sides should be added together not
> multiplied ? Can anyone verify this ?
>
> I've cross checked this with Ivan Pepelnjak' book on
> EIGRP. Chapter 1, Page 10 "Computing a Composite
> Metric" appears to verify that the White Paper is
> CORRECT. They both suggest that if K5 = 0 then the
> Composite Metric = 0 ???
>
> Ivan also suggests that if all K-Values are set to
> zero then the composite metric is always 1 ?
>
> Wether or not you add or multiply both sides
> together
> the composite metric will = 0.
>
> Anyway, there is also a typo below 108 should read
> 10^8
>
>
>
> >>SNIP
> This differs from the bandwidth usage in OSPF, in
> which route cost, by default, derives from the sum
> of
> interface costs along the path. OSPF interface cost
> defaults to 108/interfaceBandwidth, where
> interfaceBandwidth is 1544 or the value of the
> interface bandwidth commands (with a value in
> kilobits).
>
>
> >>END SNIP
>
>
> Any thoughts ?
>
> Phil.
>
>
>
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