From: Calton, Doug (Doug.Calton@getronics.com)
Date: Wed Jun 16 2004 - 22:40:10 GMT-3
A lot of the practice labs I have used include redistribution with
specifications for being loop free and using optimal paths. As I work
on these labs, it seems to me that "optimal" is VERY subjective,
particularly in some of the nastier labs with a bazillion overlapping
and alternate connections between routers. E.g., with loopback I/Fs,
the optimal path to them will depend on just where you are coming from
in the network, so what I remotely view as an optimal path to the loop
may not agree with what the host router itself sees as the optimal path,
leading to disjoint paths or even feeback/loops.
I guess I have come to the conclusion that optimization can occur only
within the IGP domain, if anywhere. Once you begin redistributing, all
you can do is rough things in a reasonable fashion, and there is no
clear "right" answer.
Any thoughts on how solutions are evaluated based on this, or other
thoughts?
Doug Calton
Program Manager
AN/TSP
Tel: 513-774-8333
FAX: 978-625-1026
Mobile: 513-253-8484
doug.calton@getronics.com
www.getronics.com/us
This archive was generated by hypermail 2.1.4 : Sat Jul 03 2004 - 19:40:42 GMT-3