RE: BGP default route

Hello Andrew,

From what I understand all emails are archived. Peruse them at your own liking and feel free to research previous questions that may be similar to the one you are asking. You can also think about what OSPF area-related commands can generate a default route. You are right in seeing that OSPF has tighter restraints than the other IGPs. Also, whenever you see a mention or have a requirement that includes the default route, take care in that the default route is rarely ever treated like a normal route....regardless the routing protocol.

HTH,
Andre

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of ALL From_NJ
Sent: Thursday, April 14, 2011 11:40 PM
To: Joseph L. Brunner
Cc: Routing Freak; Cisco certification
Subject: Re: BGP default route

Hey team,

I deleted an email by accident, so I missed a few suggestions made to this
email thread. Sorry about this.

I am labbing this topic, and I am not sure I fully understand the scenario.
Or at least, what I mean to say is, that I am not coming up with the results
I thought I would. I thought perhaps there was some secret sauce around
this topic and this bgp redistribute-internal command.

Here is what I have in my lab:
.
-- 2 routers (R6 and R4) running RIP and R6 has a default route advertised
in RIP. R4 learns this route. I also tried this with a static default
route on R4 ... same results.
.
-- On R4, I advertise this RIP default route in BGP via the command
"network 0.0.0.0".
.
-- R4 and R3 also run BGP, and R3 receives the default route that was added
to R4 via BGP. R3 shows this as a BGP route and uses it just fine.
.
So far so good.
.
-- R3 runs OSPF with R2 and R1.
.
-- R2 and R1 cannot see this BGP default route since I cannot add it to OSPF
with only the redistribute bgp command on R3; default routes are not
included in this redistribute bgp command.
.
-- Even with the command "bgp redistribute-internal", I am not able to add
this bgp default route to OSPF
.
Per the docs, the bgp redistribute-internal is for only iBGP routes and not
for any default routes. Any thoughts?

*** So how to get a default route from within BGP, into OSPF? To me, it
appears only the default-information command will do this.

Any other suggestions for lab testing? I am eager to learn from you all!!!

Have a good night.

Andrew

.
On Wed, Apr 13, 2011 at 5:09 PM, Joseph L. Brunner
<joe_at_affirmedsystems.com>wrote:

> You must have missed "bgp redistribute-internal" on final jeopardy a few
> weeks ago.
>
> Or in everyone of Wendell Odom's CCNA books since 1999!
>
> LOL
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Routing Freak
> Sent: Wednesday, April 13, 2011 3:18 PM
> To: Cisco certification
> Subject: BGP default route
>
> How to redistribute a default route from BGP to IGP
>
> and
>
>
> How to redistribute default route from IGP to BGP
>
> Can someone tell me how to do that??
>
>
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-- 
Andrew Lee Lissitz
all.from.nj_at_gmail.com
Blogs and organic groups at http://www.ccie.net