From: Brian McGahan (brian@cyscoexpert.com)
Date: Wed May 28 2003 - 18:32:04 GMT-3
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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