Task 4.10 -- RIPv2 filtering with Prefix Lists

khabib · July 2008

Hi,

I don't quite understand the solution for second bullet. This is what the Solution Guide says:

* on R5, under rip process: distribute-list prefix PERMIT_ALL gateway NOT_FROM_R4 in

* the way I had attempted to solve this was by correctly creating NOT_FROM_R4 prefix list but obviously that didn't achieve the purpose by itself. What is the functionality of the "gateway" in this distribute list.

* why doesn't just applying the distribute list in the following manner work? : Rack1R5(config-router)# distribute-list prefix NOT_FROM_R4 in

thanks

Brian McGahan · July 2008

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With just the single prefix-list how can you control who's you're
receiving it from? The "gateway" portion matches the update source of
the prefix as well as the route itself.

HTH,

Brian McGahan, CCIE #8593 (R&S/SP/Security)

[email protected]

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khabib wrote:

Hi,

I don't quite understand the solution for second bullet. This is
what the Solution Guide says:

* on R5, under rip process: distribute-list prefix PERMIT_ALL
gateway NOT_FROM_R4 in

* the way I had attempted to solve this was by correctly creating
NOT_FROM_R4 prefix list but obviously that didn't achieve the purpose
by itself. What is the functionality of the "gateway" in this
distribute list.

* why doesn't just applying the distribute list in the following
manner work? : Rack1R5(config-router)# distribute-list prefix
NOT_FROM_R4 in

thanks

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Task 4.10 -- RIPv2 filtering with Prefix Lists

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