From: Howard C. Berkowitz (hcb@gettcomm.com)
Date: Thu Nov 27 2003 - 13:05:58 GMT-3
At 12:58 PM +0100 11/27/03, 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
There just really aren't any simple issues. Going through a few
years of archives of the IETF OSPF Working Group would be a good
start, or getting a consultant that has done such things. You
mention stability and convergence time as issues, but unfortunately
tuning for one tends to create a problem in the other. Finding the
right balance is an art.
Nevertheless, 150 routers shouldn't be that bad unless you have a
large numbero of unstable routes, or routers with underpowered CPUs.
2500s would be problematic, but 3600s or better should have little
problem.
>
>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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