RE: EIGRP metrics on Doc CD

From: Jack Router <pan.router_at_gmail.com>
Date: Thu, 27 May 2010 16:58:43 -0400

Ok, but what is then the value of this section of the formula if K3=1 and
K5=0 ?

 

(K3*Delay)*(K5/(Reliability + K4)

 

Will then delay be considered or not and why ?

 

 

From: shiran guez [mailto:shiranp3_at_gmail.com]
Sent: 27-May-10 15:22
To: Jack Router
Cc: ccielab_at_groupstudy.com
Subject: Re: EIGRP metrics on Doc CD

 

 EIGRP Metric = 256*((K1*Bw) + (K2*Bw)/(256-Load) +
(K3*Delay)*(K5/(Reliability + K4)))

I painted all the parenthesis so you can count again and see if somthing is
missing? (looks ok to me (:-))

 

 

On Thu, May 27, 2010 at 7:41 PM, Jack Router <pan.router_at_gmail.com> wrote:

Full formula on DOC CD contains 6 left parenthesis and 7 right parenthesis,
so obviously it is wrong.

From: shiran guez [mailto:shiranp3_at_gmail.com]
Sent: 27-May-10 12:04
To: Jack Router
Cc: ccielab_at_groupstudy.com
Subject: Re: EIGRP metrics on Doc CD

The formula is correct, The 0 or 1 mean will be calculated in the formula or
will not be calculated all the 0 values will be ignored from calculations
and not actually calculate 0*K(x).

if K1=K3=1 mean that only

EIGRP Metric = 256*((K1*Bw) + (K3*Delay)) = 256 *(BW+Delay)

On Thu, May 27, 2010 at 6:52 PM, Jack Router <pan.router_at_gmail.com> wrote:

Hello,

Is this formula for EIGRP metrics correct? I found it while on Doc CD, link
below.

EIGRP Metric = 256*((K1*Bw) + (K2*Bw)/(256-Load) +
(K3*Delay)*(K5/(Reliability + K4)))

I think it is wrong because:
a) assuming defaults: K1=K3=1 and K2=K4=K5=0, only bandwidth will be
considered.
b) number of left and right parenthesis does not match

Can someone point me to correct formula, preferably accessible from DOC CD
main page. I just do not feel like memorizing that.

http://www.cisco.com/en/US/docs/ios/iproute_eigrp/configuration/guide/ire_cf
<http://www.cisco.com/en/US/docs/ios/iproute_eigrp/configuration/guide/ire_c

f%0d%0ag_eigrp_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp106008

5>
g_eigrp_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1060085

Thanks,

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Received on Thu May 27 2010 - 16:58:43 ART

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