From: McCallum, Robert (Robert.McCallum@xxxxxxxxxxxxxxxxxx)
Date: Wed Mar 20 2002 - 14:11:47 GMT-3
I think you might find that the 0 is off and the 1 is on. Its like a switch no
t a decimal number.
-----Original Message-----
From: Rising, Danny [mailto:danny.rising@wachovia.com]
Sent: 20 March 2002 16:39
To: 'ccielab@groupstudy.com'
Subject: CCIE Question regarding metrics and K values
> These facts are given...
>
> To determine EIGRP metric the following formula is used.
>
> metric = [K1 * bandwidth + (K2 * bandwidth) / (256 - load) + K3 * delay] *
> [K5 / (reliability + K4)]
>
> Default values are as follows...
>
> K1 = 1
> K2 = 0
> K3 = 1
> K4 = 0
> K5 = 0
>
> Capmark uses
>
> K1 = 0
> K2 = 1
> K3 = 1
> K4 = 1
> K5 = 0
> K6= 0
>
> In both cases, K5 is equal to 0. 0 divided by anything is zero and 0
> multiplied by anything is zero. So regardless of other values, if K5=0
> then metric=0. Cisco says this in the white paper on EIGRP
>
> For default behavior, you can simplify the formula as follows:
>
> metric = bandwidth + delay
>
> Combine this formula with the scaling factors and you have:
>
> [(10^7/min bandwidth) + sum of delays] * 256
>
> Just how in the heck do they get metric = BW + Delay if the "reliability
> modifier" is always 0?
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:57:14 GMT-3