[c-nsp] OSPF router gets separated from a broadcast domain

[Gabor Ivanszky]

Peter Rathlev wrote:
>
>> That makes sense. But our experience in a real life scenario is that the 
>> partitioning of  "OSPF speaking transport network" creates the blackhole 
>> as well. I will try to build this in the lab. May the root cause of the 
>> blackhole wasn't the network separation, but something else...
>
> If you only use these networks as OSPF transport networks, it's not a
> big problem if they're black holed. Since they're not destinations,
> neither clients nor servers ever see them in anything but a trace.
>
But not only the transport network itself get blackholed, but all the 
networks which are reachable through it.