IGP metrics on WAN links

Fri Jul 19 18:25:16 UTC 2002

Think most ISPs use actual fiber miles (with an arithmetic factor to get to
a certain range of course) as the means for the value of IGP metrics... of
course there are always some "twinking" done regularly to give higher
priorities to the higher bandwidth, link condition etc.

Sush

----- Original Message -----
From: "Tom Holbrook" <tomhol at corp.earthlink.net>
To: <nanog at merit.edu>
Sent: Friday, July 19, 2002 12:27 PM
Subject: IGP metrics on WAN links

>
> Just curious as to what people are using for metrics in their IGP and what
> their reasons are; bandwidth? geographical distance? latency? etc...
>
> Thanks
> -Tom
>
> __________________
> Tom Holbrook
> Sr. Network Engineer
> Atlanta
> Earthlink
>