Re: Distribute-list

My bad :)

Nice link!

Regards
Roy

2009/7/12 Bryan Bartik <bbartik_at_ipexpert.com>

> Here is in example. Using "out ospf" under EIGRP filter routes from OSPF
> into EIGRP. The syntax is not very intuitive.
>
> http://ccietobe.blogspot.com/2008/11/redistribution-filtering-with.html
>
>
> On Sun, Jul 12, 2009 at 11:27 AM, Roy Waterman <roy.waterman_at_gmail.com>wrote:
>
>> Malik
>> The distribute list is under eigrp 100 and it is applied OUTBOUND into
>> ospf
>> 1
>>
>> Example B:
>> router eigrp 100
>> redistribute ospf 1 metric 1 1 1 1 1
>> distribute-list 5 out ospf 1
>> !
>> access-list 5 permit 10.10.10.0
>>
>> Now, as far as I am aware, the above says:
>>
>> permit only 10.10.10.10 to go into ospf 1, from eigrp 100.
>> However, OSPF needs to have:
>>
>> router ospf 1
>> redistribute eigrp 100 subnet ...
>>
>> in order for OSPF to KNOW that it needs to redistribute eigrp 100 routes
>> in,
>> namely the 10.10.10.10.
>> EIGRP is saying to OSPF..ok you want to redistribute? Here Ill just give
>> you
>> 10.10.10.10.
>>
>> G2, test out these scenarios that you mentioned, & then you will
>> understand
>> how things work.
>>
>> Regards
>> Roy
>>
>>
>>
>> What the above means is, only permit
>>
>> 2009/7/12 S Malik <ccie.09_at_gmail.com>
>>
>> > distribute-list 5 out F1/0 means permit outgoing routes on interface
>> F1/0
>> > permitted by ACL5.
>> >
>> > distribute-list 5 out ospf 1 Means permit routes referenced in ACL5
>> which
>> > are sourced from OSPF1.
>> >
>> >
>> >
>> >
>> >
>> > On Sat, Jul 11, 2009 at 4:03 PM, G2 <farawayguy_at_gmail.com> wrote:
>> >
>> > > I guess my question was not very clear. Let me try to rephrase it.
>> > >
>> > > I am looking for some clarification on the differences between using a
>> > > distribute with the following two syntaxes:
>> > >
>> > > Example A:
>> > > router eigrp 100
>> > > redistribute ospf 1 metric 1 1 1 1 1
>> > > distribute-list 5 out F1/0
>> > > !
>> > > access-list 5 permit 10.10.10.0
>> > > !
>> > >
>> > > VERSUS
>> > >
>> > > Example B:
>> > > router eigrp 100
>> > > redistribute ospf 1 metric 1 1 1 1 1
>> > > distribute-list 5 out ospf 1
>> > > !
>> > > access-list 5 permit 10.10.10.0
>> > > !
>> > >
>> > >
>> > >
>> > > Any good documentation would be great.
>> > >
>> > > Thanks,
>> > >
>> > >
>> > >
>> > > On Jul 11, 2009, at 8:42 PM, Darby Weaver wrote:
>> > >
>> > > > It's a question on whether you want to permit/allow traffic at the
>> > > > interface level or at the process level. It becomes a question of
>> > > > granularity and/or where one wants to influence traffic. Let's find
>> > > > some freebie examples.
>> > > >
>> > > > And note that if used at the process level - consider the gateway
>> > > > option to filter updates from a certain entry point.
>> > > >
>> > > > Here's a step-by-step example on using a distribute-list under a
>> > > > process versus an intrerface.
>> > > >
>> > > >
>> > >
>> >
>> http://www.petri.co.il/how-to-use-a-distribute-list-to-filter-out-routing-updates-in-cisco-ios.htm
>> > > >
>> > > > This example may offer a little more insight too, but read carefully
>> > > > as the material is a bit dated:
>> > > >
>> > > >
>> > >
>> >
>> http://books.google.com/books?id=oBWU-q9Ovg8C&pg=PA159&lpg=PA159&dq=distribute-list+cisco&source=bl&ots=BB3j3ez_pU&sig=_Sipi1rVIcWthp6qZNyQs_k1nB8&hl=en&ei=_stYSuHGLJT7tgex6PndCg&sa=X&oi=book_result&ct=result&resnum=10
>> > > >
>> > > > Some things to keep in mind:
>> > > >
>> > > >
>> > > > http://www.911networks.com/index.php/Cisco/RedistDistLists
>> > > >
>> > > >
>> > > > On Sat, Jul 11, 2009 at 9:54 AM, G2 <farawayguy_at_gmail.com> wrote:
>> > > > Does anyone have any good documentation or explanation on
>> distribute-
>> > > > list being used via routing process vs the physical interface?
>> > > >
>> > > > Thanks,
>> > > > Gary
>> > > >
>> > > >
>> > > > Blogs and organic groups at http://www.ccie.net
>> > > >
>> > > >
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>> >
>> >
>> >
>> >
>> >
>>
>>
>> --
>> Regards
>> Roy
>>
>>
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>>
>
>
> --
> Bryan Bartik
> CCIE #23707 (R&S), CCNP
> Sr. Support Engineer - IPexpert, Inc.
> URL: http://www.IPexpert.com
>

-- 
Regards
Roy
Blogs and organic groups at http://www.ccie.net