From: Edward Monk (emonk@xxxxxxx)
Date: Wed Aug 28 2002 - 21:55:45 GMT-3
Jon,
There is one thing to be aware of when using bgp always-compare-med it
is recommended that you enable it over the entire AS otherwise you could
end up with routing loops.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Nick Shah
Sent: Wednesday, August 28, 2002 5:36 PM
To: Jon O'Nan; ccielab@groupstudy.com
Subject: Re: deterministic med
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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