[nsp] OSPF NSSA

[John Pang]

Hi Oliver,

Thanks alot for the explanation and advice!

/me back to exploring in the lab

Best regards,

--- "Oliver Boehmer (oboehmer)" <oboehmer at cisco.com>
wrote:
> > 
> > Thanks alot for your advice and info.
> > 
> > I tried out Mustafa's method of putting R4's
> loopback
> > into Area 1 and R1 is now able to see 2 paths to
> R4.
> > :)
> 
> Ack. For your topology this is the best solution (I
> forgot to mention it
> in my previous mail).
>  
> > Just curious but is putting the loopback into an
> Area
> > a standard procedure? Is this behaviour standard
> for
> > OSPF or is it due to the way Cisco IOSes operate?
> 
> It is standard practice, and also best practice for
> any connected
> interface for this matter. You can always add a
> "passive-interface"
> statement if you don't want any neighbor
> relationships established over
> the interface.  
> 
> > Previously I used to do redistribute connected to
> > inject the loopback IP address into OSPF. How is
> this
> > different from manually specifying the loopback IP
> > address as a member of the area?
> 
> As Andrew already mentioned: this prevents external
> LSAs from being
> generated. So depending on your topology this might
> or might not make a
> difference. 
> 
> 	oli


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