[j-nsp] Dynamic generation of interface IPs of OSPF neighbo(u)rs ?

Thedin Guruge thedin at gmail.com
Fri Jan 28 13:21:59 EST 2011


yeah or even assign the protocol active interfaces to an interface group
which then can be associated with a firewall filter applied to the loopback
interface.

On Sat, Jan 29, 2011 at 6:49 AM, Jensen Tyler <JTyler at fiberutilities.com>wrote:

> You could filter by configured interface and IP Space you own( or use in
> your core). Not what you are looking for but easy to do.
>
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:
> juniper-nsp-bounces at puck.nether.net] On Behalf Of David Ball
> Sent: Friday, January 28, 2011 11:37 AM
> To: Juniper-Nsp
> Subject: [j-nsp] Dynamic generation of interface IPs of OSPF neighbo(u)rs ?
>
>  Brain stuck in Friday mode.  I've created a prefix-list using apply-path
> which looks at 'protocols bgp group <*> neighbor <*>' to get a list of my
> BGP neighbour IPs.  Works fine.  Now I'm trying to think of a way to do the
> same with OSPF neighbor IPs (and perhaps even LDP, RSVP, etc).  Not quite
> as
> easy since they're not all listed together in 1 spot anywhere, so I'm
> trying
> to figure out how or if it's possible to dynamically generate such a list.
> What I'm trying to create is a firewall filter for lo0 which only allows
> appropriate traffic to the RE, such that if one of our operators adds a new
> OSPF interface, they won't have to remember to update the firewall filter.
> As stated above, the stanza to allow BGP was easy, but I can't think of a
> way for the other protocols.  Trying to avoid manually maintaining a
> prefix-list which contains all of said IPs.  Is commit scripts my only path
> to glory ?
>
> David
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