[j-nsp] Problems with OSPF stub area (Juniper and Cisco)

[Avram Dorfman]

Hey Matti,

I tried this config between two junipers, and at first the /25 did not 
show up either, but it shouldn't have - there were no more specific 
active routes from the range to coalesce.

Then I added a 193.167.206.16/30 hanging off of the "cisco" in your 
scenario, and both it and the /25 discard route showed up on both 
routers.

Do you have such a subordinate route actually in your area?

(As a side note, I don't see how you got your ATM interface to come up 
without having specified the atm-options vpi 0 max-vcs statement, or 
did you just omit it from your email?)

-Avram

On Tuesday, November 5, 2002, at 02:06  AM, Matti Saarinen wrote:

>
> Hi,
>
> I'm having problems with configuring an OSPF stub area where ABR is
> Juniper (JUNOS 5.4.R2.4) and inside the area there is a Cisco router.
> The routers are connected to each other over an ATM PVC.
>
>
> Currently, I have the following configuration in Juniper:
>
>
> interfaces {
>     at-0/0/0 {
>         unit 206 {
>             encapsulation atm-snap;
>             vci 0.206;
>             inverse-arp;
>             family inet {
>                 rpf-check;
>                 no-redirects;
>                 address 193.166.187.205/30;
>             }
>         }
>     }
> }
>
> protocols {
>     ospf {
>         area 193.167.206.0 {
>             stub default-metric 10 no-summaries;
>             area-range 193.167.206.0/25;
>             area-range 193.166.187.204/30;
>             interface at-0/0/0.206;
>         }
>     }
> }
>
>
> I've no access to the Cisco router on the other end of the link. Yet,
> I think its configuration is more or less in order because when I had
> a Cisco router in place of the Juniper there were no problems. In
> Cisco, the following configuration did work:
>
>
> interface ATM8/0/0.6 point-to-point
>  ip address 193.166.187.205 255.255.255.252
>  ip verify unicast reverse-path
>  no ip directed-broadcast
>  ip pim sparse-dense-mode
>  ip ospf network broadcast
>  atm pvc 206 0 206 aal5snap inarp
>  no atm enable-ilmi-trap
> router ospf 1739
>  area 193.167.206.0 stub no-summary
>  area 193.167.206.0 range 193.167.206.0 255.255.255.128
>  network 193.166.187.204 0.0.0.3 area 193.167.206.0
>  network 193.167.206.0 0.0.0.127 area 193.167.206.0
>
>
> While looking through the ospf trace in Juniper I don't see anything
> about the network 193.167.206.0. Only the /30 in p2p link shows up.
> The adjacency between Juniper and Cisco becomes full and in the area
> database I can see the routes. Still, they never appear in the
> forwarding table.
>
> So, if anyone can give me any hints what to do or what I do wrong,
> I'll appreciate it.
>
> Cheers,
>
>
> -- 
> Matti Saarinen, Tampere University of Technology / Network 
> Administration
> Phone:	+358 3 3115 3337 # Address:	P.O. Box 692
> Fax:	+358 3 3115 2172 #		FIN-33101 Tampere
> Email:	mjs@cc.tut.fi	 #		Finland
>
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