Loop Free Redistribution

From: Sam.MicroGate@xxxxxxxxxxxxxx
Date: Wed Apr 03 2002 - 13:16:36 GMT-3


   
Hello

Can you please look at the following config and let me know if this OK when
redistributing between routing protocols? If I have a router with 3 routing
protocols as follows:

Protocol 1: networks a, b and c plus the connected interface X.
Protocol 2: networks d, e and f plus the connected interface Y.
Protocol 3: networks g, h and i plus the connected interface Z.

When distribute between these routing protocol, I would do the following:

router protocol 1
redistribute protocol 2 route-map filter_abc
redistribute protocol 3 route-map filter_abc
redistribute connected route-map permit_interfaceYZ
default-metric whatever

router protocol 2
redistribute protocol 1 route-map filter_def
redistribute protocol 3 route-map filter_def
redistribute connected route-map permit_interfaceXZ
default-metric whatever

router protocol 3
redistribute protocol 2 route-map filter_ghi
redistribute protocol 1 route-map filter_ghi
redistribute connected route-map permit_interfaceXY
default-metric whatever

After finishing this step, I have to take care of the FLSM/VLSM issue by
using summarization or whatever. Is there any chance that a routing loop
happen in this network?

Elsayed



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