[c-nsp] OSPF Problem

[Philippe Strauss]

On Thu, Apr 26, 2007 at 03:24:53PM -0400, Paul Stewart wrote:
> Hi folks...
> 
> I'm trying to bring up a pair of new OSPF connections and can't figure this
> out.. we do these connections all the time so scratching my head....
> 
> Cisco 1811 at customer site connected via 2 ethernet connections (bridged
> DSL) back to 6500 switches here (each VLAN goes to a switch).  This is a
> pretty typical setup for us, except this one doesn't work for some
> reason....
> 
> 1811 Config:
> 
> interface FastEthernet0
>  description VLAN205
>  ip address xx.xx.xx.26 255.255.255.248
>  speed 100
>  full-duplex
> !
> interface FastEthernet1
>  description VLAN206
>  ip address xx.xx.xx.162 255.255.255.248
>  speed 100
>  full-duplex
> 
> interface Loopback0
>  description OSPF Loopback
>  ip address xxx.xxx.xxx.5 255.255.255.255
> 
> 
> router ospf 1
>  router-id xx.xx.xx.5
>  log-adjacency-changes
>  redistribute connected subnets
>  network xx.xx.xx.24 0.0.0.7 area 0
>  network xx.xx.xx.160 0.0.0.7 area 0
> 
> 
> 6500 Configs:
> 
> interface Vlan205
>  description xxxxxxxxxxxxxxx
>  ip address xx.xx.xx.25 255.255.255.248
> 
> router ospf 1
>  router-id xx.xx.xx.161
>  log-adjacency-changes
>  redistribute connected subnets
>  redistribute static subnets
>  network xx.xx.xx.24 0.0.0.7 area 0
> 
> 
> -----------
> 
> interface Vlan206
>  description xxxxxxxxxxxxxxxxxx
>  ip address xx.xx.xx.161 255.255.255.248
> 
> router ospf 1
>  log-adjacency-changes
>  redistribute connected subnets
>  redistribute static subnets
>  network xx.xx.xx.160 0.0.0.7 area 0
> 
> 
> 
> There is no problem pinging across both interfaces etc..... but OSPF will
> not come up at all....

multicast filtered out by the DSL modems?
Have you tried to bring up OSPF adjacencies with "neighbor" statements?

regards.

-- 
Philippe Strauss
av. de Beaulieu 25
1004 Lausanne
http://philou.ch