[j-nsp] routing instances - ospf - summarization

[Alex Arseniev]

To export a summarized route, having at least 1 more-specific contributing 
route is necessary and sufficient.
I.e. if You have 10.10.10.1/32 as Type-1 in OSPF area X, then creating a 
Type-3 summary (to announce from area X to any other area including 0) is 
easy:

set routing-instances RIX protocols ospf area X range 10.10.0.0/16

Of course, if You have disparate address blocks in RI1 and RI2, then You 
cannot export Type-3 all-RI2-prefixes-summary from RI1  if a more specific 
does not exist in RI1.

And external/Type5|7 OSPF routes can be only summarized on ASBR (the place 
where Type-5|7 are created in 1st place).
HTH
Thanks
Alex

----- Original Message ----- 
From: "n f" <pkc_mls at yahoo.fr>
To: <juniper-nsp at puck.nether.net>
Sent: Wednesday, June 05, 2013 6:57 AM
Subject: [j-nsp] routing instances - ospf - summarization


> Hi all,
>
>
> I'm running junos 11.4 on a cluster of srx devices.
>
>
> I'm using two virtual instances, one for my internal networks and 
> internet, and another one for a private network.
>
>
> OSPF is configured on routing instance1 (RI1) and routing instance 2 
> (RI2).
>
> I can export between routing instances, but I'd like to know if it was 
> possible to export via ospf from RI2 to other physical routers
> a single route that summarizes all the local routes I have. (like 
> 10.10.0.0/16, as all the routes I receive via ospf on RI2 from RI1
>
> are included within this subnet).
>
>
> Does anyone know if it is possible to do so ? (maybe OSPF doesn't allow 
> that at all).
>
>
> thanks
>
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