[c-nsp] Strange behavior OSPF Default route

omar parihuana omar.parihuana at gmail.com
Fri Apr 27 19:41:21 EDT 2007


Thanks Harlod,

I found a L3 Switch Extreme Networks advertising the default route.

Thanks again!.

Rgds.


On 4/27/07, Harold Ritter (hritter) <hritter at cisco.com> wrote:
>
> Omar,
>
> This default route is most probably generated by some other device. Can
> you do a "show ip ospf da ext 0.0.0.0" and check the advertising router.
> It is probably different then the RID of the Central router.
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of omar parihuana
> Sent: Friday, April 27, 2007 5:55 PM
> To: nsp
> Subject: [c-nsp] Strange behavior OSPF Default route
>
> Hi Folks,
>
> I've figure out a strange behavior with OSPF Default route generation.
> I have static routes then I redistributed into OSPF, but Default Route
> also is redistributed!!!!, So far I know that the default route
> generation is accomplished with default-information originate command.
> Why default route is redistributed??? maybe some bug? I copy confs:
>
> Central Router:
>
> !
> router ospf 1
> log-adjacency-changes
> redistribute static
> network 172.16.1.0 0.0.0.255 area 0
> network x.x.x.96 0.0.0.31 area 0
> !
> ip route 0.0.0.0 0.0.0.0 x.x.x.97
> !
>
> Remote Router:
>
> !
> router ospf 1
> log-adjacency-changes
> network 172.16.1.0 0.0.0.255 area 0
> !
>
> Remote#sh ip route | inc \*
>       ia - IS-IS inter area, * - candidate default, U - per-user static
> route
> O*E1 0.0.0.0/0 [110/21] via 172.16.1.53, 11:39:10, Serial0/0:0
>
> The IOS used in Central site is: slot0:c7200-jo3s-mz.122-12.bin
>
> Rgds.
>
> --
> Omar E.P.T
> -----------------
> Certified Networking Professionals make better Connections!
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>



-- 
Omar E.P.T
-----------------
Certified Networking Professionals make better Connections!


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