[j-nsp] OSPF Export policy question

[Rafal Szarecki (WA/EPO)]

I not remember JUNOS version when this wos intriduced but in 7.3:

"OSPF import policy allows users to define policy to prevent adding OSPF routes to the routing table. This filtering happens when OSPF installs the route in the routing table. You can filter the routes, but not LSA flooding. The import policy can filter on any attribute of the OSPF route.

To filter OSPF routes from being added to the routing table, include the import statement:

[edit protocols (ospf | ospf3)]

import [ policy-names ]; "

http://www.juniper.net/techpubs/software/junos/junos73/swconfig73-routing/html/ospf-config35.html#1044743
http://www.juniper.net/techpubs/software/junos/junos73/swconfig73-routing/html/ospf-summary18.html#1269569

Rafa³ Szarecki JNCIE

skype me <callto://Rafal_Szarecki/> 



> -----Original Message-----
> From: Sinan Ilkiz [mailto:sinan.ilkiz at borusantelekom.com]
> Sent: Monday, October 03, 2005 4:47 PM
> To: Rafal Szarecki (WA/EPO)
> Subject: RE: [j-nsp] OSPF Export policy question
> 
> 
> 
> You are clearly rigth about LSDB. Perhaps someday JunOS will 
> be able to
> do that.
> 
> Thanks.
> 
> 
> 
> -----Original Message-----
> From: Rafal Szarecki (WA/EPO) [mailto:rafal.szarecki at ericsson.com] 
> Sent: Monday, October 03, 2005 5:18 PM
> To: Sinan Ilkiz
> Subject: RE: [j-nsp] OSPF Export policy question
> 
> However LSDB has to be equal on all routers, in moder JUNOS 
> if should be
> possible what routes will be imported from LSDB to RIB and 
> then to FIB.
> 
> Rafal
> 
> > -----Original Message-----
> > From: juniper-nsp-bounces at puck.nether.net
> > [mailto:juniper-nsp-bounces at puck.nether.net]On Behalf Of Sinan Ilkiz
> > Sent: Monday, October 03, 2005 4:10 PM
> > To: Sabri Berisha
> > Cc: juniper-nsp at puck.nether.net
> > Subject: RE: [j-nsp] OSPF Export policy question
> > 
> > 
> > 
> > Ok Sabri, you are RFC wise rigth. But this is just a test 
> scenario :-)
> > 
> > I think what i want is impossible due to the multicast 
> nature of OSPF.
> > 
> > Thanks anyway. I get what i need :-)
> >  
> > 
> > -----Original Message-----
> > From: Sabri Berisha [mailto:sabri at cluecentral.net]
> > Sent: Monday, October 03, 2005 2:47 PM
> > To: Sinan Ilkiz
> > Cc: juniper-nsp at puck.nether.net
> > Subject: Re: [j-nsp] OSPF Export policy question
> > 
> > On Mon, Oct 03, 2005 at 02:32:07PM +0300, Sinan Ilkiz wrote:
> > 
> > Hi Sinan,
> > 
> > > I am trying to implement an OSPF export policy with the "neighbor"
> > > statement. It seems that it does not have any effect on the 
> > > distribution of routes. Configuration is as follows;
> > >  
> > > IMO, neighbor router should not get any route updates with this
> > policy.
> > > But M7i does not bother "to neighbor 1.2.3.4" statement and 
> > > distributes its routes. Any thoughts or comments?
> > 
> > OSPF requires all routers in an area to have the same link-state 
> > database. This prohibits you from creating 
> policy-statements where you
> 
> > prohibit -some- neighbors in an area from receiving certain LSA's.
> > 
> > --
> > Sabri
> > 
> > please do not throw salami pizza away
> > 
> > 
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> sisteminizden siliniz. BORUSAN TELEKOM bu mesajin icerigi ve 
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