[j-nsp] Junos ospf question

R S dim0sal at hotmail.com
Wed Sep 25 04:09:47 EDT 2013


I understood the same and I need to be able to drop network announcement in a very granular way...


> Subject: Re: [j-nsp] Junos ospf question
> From: p1 at westerlund.se
> Date: Wed, 25 Sep 2013 09:59:43 +0200
> CC: ipv6freely at gmail.com; juniper-nsp at puck.nether.net
> To: dim0sal at hotmail.com
> 
> I don't think overload-mode is what you want.
> 
> I used it once before I realized the consequences. It will, as i says in the docs, put itself into the mode "I cannot really be used for transit traffic any more, only send me traffic for my directly attached networks".
> 
> This is an OSPF setting (in this context), so OSPF will only advertise directly attached networks that have an interface participating in OSPF, actively or passively.
> 
> Non-native OSPF routes, such as static routes announced via OSPF (normally LSA type 5, external) will be immediately dropped from OSPF announcements while in overload-mode!
> 
> Caught me by surprise, that way I lost the only way to those networks ……
> 
> /Per
> 
> 
> 25 sep 2013 kl. 09:44 skrev R S <dim0sal at hotmail.com>:
> 
> > Yes but I do not want that the entire device do not partecipate to the routing OSPF domain, just for few networks...
> > 
> > Do you have an example of that ?
> > 
> > Date: Tue, 24 Sep 2013 09:33:40 -0700
> > Subject: Re: [j-nsp] Junos ospf question
> > From: ipv6freely at gmail.com
> > To: dim0sal at hotmail.com
> > CC: juniper-nsp at puck.nether.net
> > 
> > http://www.juniper.net/techpubs/en_US/junos11.4/topics/topic-map/ospf-overload-mode.html
> > 
> > 
> > 
> > On Tue, Sep 24, 2013 at 8:04 AM, R S <dim0sal at hotmail.com> wrote:
> > 
> > 
> > 
> > 
> > 
> > Hi
> > 
> > 
> > 
> > I s there a
> > 
> > way with Junos to manipolate OSPF metric to mark as unreachable a network received
> > 
> > through a particular path ?
> > 
> > 
> > 
> > I was told
> > 
> > that with Screenos was possible, but I’m wondering if it is true or not ?
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > Any
> > 
> > experience ? feedback ?
> > 
> > 
> > 
> > 
> > 
> > Regards
> > 
> > 
> > 
> > _______________________________________________
> > 
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> > 
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> > 
> > 
> > 
> > -- 
> > Chris Jones
> > JNCIE-ENT #272
> > CCIE# 25655 (R&S)
> > 		 	   		  
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