RE: EIGRP metric (just to be sure)

From: Danny.Andaluz@triaton-na.com
Date: Wed May 28 2003 - 18:36:41 GMT-3


Thanks, Brian. I've gotten many replies to this post and I got it now. I will not forget this. :-)

Danny

-----Original Message-----
From: Brian McGahan [mailto:brian@cyscoexpert.com]
Sent: Wednesday, May 28, 2003 5:32 PM
To: Andaluz, Danilo, Triaton/NA; ccielab@groupstudy.com
Subject: RE: EIGRP metric (just to be sure)

Danny,
        
        Bandwidth, load, delay, and reliability make up the composite metric. By default, only bandwidth and delay are taken into account. In order to consider load or reliability, you must weight those corresponding K values with the 'metric weights' command under the EIGRP process.

The calculation is as follows:

metric = [k1 * bandwidth + (k2 * bandwidth)/(256 - load) + k3 * delay]

If k5 does not equal zero, an additional operation is performed:

metric = metric * [k5/(reliability + k4)]

For more detail see:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/
fiprrp_r/1rfeigrp.htm#1023638

HTH

Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@cyscoexpert.com

CyscoExpert Corporation
Internetwork Consulting & Training
Toll Free: 866.CyscoXP
Fax: 847.674.2625

> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Danny.Andaluz@triaton-na.com
> Sent: Wednesday, May 28, 2003 1:41 PM
> To: ccielab@groupstudy.com
> Subject: EIGRP metric (just to be sure)
>
> Hello, Group. Is the below correct with regards to how eigrp picks a
best
> route? Does it do it like the below or does each value get taken into
> account for the composite metric?
>
> BW
> Delay (in case of tie with BW) ?
> relia (in case of tie with delay) ?
> load (in case of tie with relia) ?
> MTU (in case of tie with load) ?
>
> Thanks,
> Danny



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