Re: Distribute-list

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