Re: Ospf lsa filtering command.

Thanks a lot! Will sit on it in some time. :)

On Wed, Jun 3, 2009 at 12:35 AM, ALL From_NJ <all.from.nj_at_gmail.com> wrote:

> Here is the doc cd in which it describes when you might use this command
> (watch the ugly word wrap)
>
>
>
http://www.cisco.com/en/US/docs/ios/iproute/configuration/guide/irp_ospf_cfg_
ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1054763
>
> From this link:
>
> You can block OSPF flooding of LSAs two ways, depending on the type of
> networks:
>
> On broadcast, nonbroadcast, and point-to-point networks, you can block
> flooding over specified OSPF interfaces.
>
> On point-to-multipoint networks, you can block flooding to a specified
> neighbor.
>
> So the command you would use would depend on the interface type and what
> you are trying to do.
>
> I saw a caveat related to testing this feature, and this was that I
> sometimes needed to manually clear the OSPF process on the spoke router,
> even if the router had bounced the neigh relationship itself, it still
would
> required a clear from me.
>
> Seems to me this is a command to use for your spokes where they have only
> one path. I note of caution for this ... if using this towards your
spokes,
> this command also blocks a default route LSA that you may be using for a
> default route. HTH,
>
> Andrew Lee Lissitz
>
>
>
> On Tue, Jun 2, 2009 at 2:15 PM, Andy Hogard <andyhogard_at_gmail.com> wrote:
>
>> Also, it works under the network type of "point-to-multipoint
>> non-broadcast"
>> as it requires the neighbor command as well!
>>
>> :)
>>
>> On Tue, Jun 2, 2009 at 11:39 PM, Andy Hogard <andyhogard_at_gmail.com>
>> wrote:
>>
>> > Arg!!
>> >
>> > "R2#conf t
>> > Enter configuration commands, one per line. End with CNTL/Z.
>> > R2(config)#router ospf 1
>> > R2(config-router)#neighbor 131.1.23.3 database-filter all out
>> > OSPF: Neighbor command is allowed only on NBMA and point-to-multipoint
>> > networks
>> > R2(config-router)#"
>> >
>> > Got it!! :D
>> >
>> > On Tue, Jun 2, 2009 at 11:30 PM, Andy Hogard <andyhogard_at_gmail.com>
>> wrote:
>> >
>> >> Hi,
>> >>
>> >>
>> >> Was wondering ..with what ospf network types does, "neighbor 131.1.23.3
>> >> database-filter all out" command work?! Are there any caveats to watch
>> out
>> >> for, eh?
>> >>
>> >>
>> >> Greets,
>> >> Andy H.
>> >>
>> >> --
>> >> My Blog URL: http://ccielog.blogspot.com/
>> >>
>> >
>> >
>> >
>> > --
>> > My Blog URL: http://ccielog.blogspot.com/
>> >
>>
>>
>>
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>
>
> --
> Andrew Lee Lissitz
> all.from.nj_at_gmail.com
>

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