From: Angelo De Guzman (ghie_pogi@xxxxxxxxx)
Date: Thu Aug 29 2002 - 00:12:26 GMT-3
Hi Nick,
Do you mean this is wrong? 8-)
By default, BGP compares the MED attributes of routes
coming from neighbors in the same external AS
I got this from this link.
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ics/icsbgp4.htm#xtocid2043926
Thanks,
Angelo
--- Nick Shah <nshah@connect.com.au> wrote:
> Jon
>
> I hope you have already read this paper..
> http://www.cisco.com/warp/customer/459/bgp-med.html
>
> regardless of that. I will list down the effect of
> these 2 commands.
>
> * By default (with none of these commands entered)
> MED is NOT compared when
> selecting the best path.
> * Turning on bgp deterministic-med, turns on the
> feature to compare MED,
> however it only compares MED, if prefix is received
> from same neighbor and
> the best man wins
> * Turning on bgp always-compare-med, starts
> comparing 'same prefix' recd.
> from 'different neighbors' and the best man wins
> * Turning on both of them may really not be
> required, but it basically
> compares if prefixes are recd. in groups of AS's
> (say same prefix from AS
> 200, via 2 neighbors, and same prefix from AS 100
> via 1 neighbor).
>
> rgds
> Nick
> ----- Original Message -----
> From: "Jon O'Nan" <jononan@columbus.rr.com>
> To: <ccielab@groupstudy.com>
> Sent: Thursday, August 29, 2002 8:58 AM
> Subject: deterministic med
>
>
> > Am I correct that:
> >
> > bgp deterministic med - compares med within AS
> >
> > VS.
> >
> > bgp always-compare-med - compares med from another
> AS
> >
> >
> > Thanks
> > Jon
> >
>
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