Re: ospf default route

yes a misconception cleared , thanks

if the line protocol is down , the route is removed the routing table ..

On Tue, Apr 16, 2013 at 9:55 AM, _ _ <krzysiek.zalewski_at_gmail.com> wrote:

> From my lab test:
> - OSPF check only "sh ip ro 54.1.1.0 255.255.255.0"
> If route is in RIB advertise default if not, stop advertise
> - I see that you have keyword "always"
> With this keyword or without it works the same as above
> - Directly connected route could be down (link problem or
> intentionally shutdown)
> then will disappear from RIB
>
> On 4/15/13, Imran Ali <immrccie_at_gmail.com> wrote:
> > Hi ,
> >
> > based on follwoing config , intent is to track the route and originate a
> > default route .
> >
> >
> > router ospf 1
> > default-information originate always route-map TRACK_LINK_TO_BB1
> > !
> > ip prefix-list LINK_TO_BB1 seq 5 permit 54.1.1.0/24
> > !
> > route-map TRACK_LINK_TO_BB1 permit 10
> > match ip address prefix-list LINK_TO_BB1
> >
> >
> >
> > quesiton : 54.1.1.0/24 is FR subnet . how does ospf track this .
> >
> > it is a connected route that never disappears from routing table
> > regardless of layer 2 status .
> >
> > how ospf process determines this route is active ? does it checks the
> > layer two status ? or does it check if route is availble in routing
> > table ? in later case the route is always available as connected route
> > .............
> >
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> --
> Krzysiek

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Received on Tue Apr 16 2013 - 10:04:55 ART