RE: change ospf distance to manipulate route selection

From: Eric Dobyns (eric_dobyns@yahoo.com)
Date: Thu Jul 26 2007 - 22:14:39 ART


Use the 'max-metric router-lsa' command on the router you don't want used.
It will make the other two routers think its ospf routes look absolutely
horrible.

Also, personally, I never let them pick the DR/BDR on their own. Same with
STP's root. I want to know where it is and I want to pick it.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Serhat Aslan
Sent: Thursday, July 26, 2007 10:12 AM
To: nicky noname
Cc: ccielab@groupstudy.com
Subject: Re: change ospf distance to manipulate route selection

Hi Nicky,

 info: both of them are in the same area, so they have use same database
table.

* Distance command can manipulate only local route selection this means it
can effect only its routing table. On the otherhand within the same are if
you want to effect the routing process for overall routing domain you have
to manipulate this area-database table. Because, routers take the best route
with processing this database table.

Serhat Aslan

----------

On 7/26/07, nicky noname <cisco2study@gmail.com> wrote:
>
> Hello,
>
> This is my first reluctant post, as I have been content to search the
> archives previously. On this occasion I didn't find the answer.
>
>
> some clarity would be gratefully appreciated.
>
> I have a frame relay ospf multipoint network with router A, B and C ( full
> mesh).
>
> Router B and C are also connected to a common LAN segment
>
> By configuring Router A, without the use of the cost command or the
> bandwidth command, traffic should flow via router B.
>
> The Frame relay network and the LAN are in the same area.
>
> I am trying to use the distance command to change the routes advertised
> from
> router C, but it seems that Router C is doing all the advertising for this
> LAN segment. Is this the case because Router C is the DR for the LAN, so
> it
> will be the advertising router for the LAN for routes advertised to router
>
> Without sounding to confusing. I think I cannot differenciate between the
> LAN advertisement from router B or C( using the distance command), because
> the advertising router is always router C ( the DR for the LAN segment).
> Would this be right?
>
> nick
>
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