From: Peter van Oene (pvo@usermail.com)
Date: Thu Nov 27 2003 - 11:49:38 GMT-3
At 06:58 AM 11/27/2003, jfaure@sztele.com wrote:
>Hi group:
>
>We are working tuning time-convergence and stability issues on an ospf area
>that will have about 150 routers: I know this isn't a good design, somebody
>can tell "break the environment in different areas", but the case is that
>we can't do it because some traffic enginering MPLS issues don't work
>properly if you have ospf multiarea as IGP.
>
>As we need to maintain OSPF (another altervative could be to migrate to
>ISIS), i'd highly apreciate some sugestions and recommendations about
>tuning OSPF in a such environment, specially if you have direct experience
>in this type of problem.
I don't see where an ISIS migration would necessarily help. If you have
decent routers, and stable links, you should have a fairly stable OSPF
network. If it is convergence that you'd like to optimize, then obviously
some timers could be tweaked. NANOG can be a good source for some tips there.
However, multi-area wise, assuming you are really doing TE (don't see that
much of it out there myself), I believe Cisco now have some drafts to do a
rev of inter-area TE via OSPF? I'd have to look up the specifics of what
and how, but solutions should be out there soon. I've had good luck TE'ing
over area 0, and not in my spoke areas where usually the topology wasn't
meshy enough to demand it.
Just some thoughts.
pete
>Regards
>
>Juan Faure Ferrer
>email: jfaure@sztele.com
>
>Lmnea de Negocio de Telematica y CC
>Ingeniero de Integracisn de Redes y Sistemas
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