[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 ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
Re: [j-nsp] routing instances - ospf - summarization
05.06.2013 09:57, n f wrote: 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 This is rather about protocol-independent policies, not OSPF. You can use a static route like this: set routing-instances RI2 routing-options static route 10.10/16 next-table RI1.inet.0; But in one direction only, so you can't add a static route in the backward direction as JUNOS will reject to commit claiming a possible RI1-RI2 loop. Depending on your needs, you can have a static default from the internal RI to external RI (or master instance) and exported local/OSPF routes from the internal RI's to external/master RI for the backward connectivity. -- Pavel ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
Re: [j-nsp] routing instances - ospf - summarization
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_...@yahoo.fr To: juniper-nsp@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 ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
Re: [j-nsp] routing instances - ospf - summarization
Hi Pavel, This would be the best option, as I can also import the static route to OSPF. Regarding the loop, I'll check if I can keep the import from ospf RI2 to RI1, as I can't summarize the routes I'll learn from RI2 neighbor routers. thanks. - Mail original - De : Pavel Lunin plu...@senetsy.ru À : juniper-nsp@puck.nether.net Cc : Envoyé le : Mercredi 5 juin 2013 16h29 Objet : Re: [j-nsp] routing instances - ospf - summarization 05.06.2013 09:57, n f wrote: 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 This is rather about protocol-independent policies, not OSPF. You can use a static route like this: set routing-instances RI2 routing-options static route 10.10/16 next-table RI1.inet.0; But in one direction only, so you can't add a static route in the backward direction as JUNOS will reject to commit claiming a possible RI1-RI2 loop. Depending on your needs, you can have a static default from the internal RI to external RI (or master instance) and exported local/OSPF routes from the internal RI's to external/master RI for the backward connectivity. -- Pavel ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
