RE: OSPF route selection

From: Volkov, Dmitry (Dmitry.Volkov@allstream.com)
Date: Tue May 11 2004 - 16:25:32 GMT-3


> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Howard C. Berkowitz
> Sent: May 11, 2004 3:15 PM
> To: ccielab@groupstudy.com
> Subject: Re: OSPF route selection
>
> The OSPF working group official page is
> http://www.ietf.org/html.charters/ospf-charter.html
>
> This will give you the current standard:
> http://www.ietf.org/rfc/rfc2328.txt Other documents will give you
> some special cases.
>
> The basic rule:
> Always prefer intra-area over inter-area over external 1
> over external 2.
> Within a category, take the longest match.
> To break ties with equal match length, use route cost.
> If there are still ties, load-share up to the configured limit of
> parallel routes.

I'm wondering If there are let say 5 of equal cost routes within
category.
Which 4 (by default) will be taken into RT ?

Thanks
Dmitry

 
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