RE: OSPF Totally Stubby Area

From: Jim Newton (jnewton@xxxxxxxxxxxxxxx)
Date: Wed Feb 06 2002 - 00:57:29 GMT-3


   
What about nssa no-summary?

I haven't done much testing in the lab, but in two installations where I
have run this, it seems to operate as a totally stubby. I have used this
where the remote router needs to redistribute a static route (hence it must
be an asbr) but you just want to inject a default route into the area.

Like I said I haven't done too much testing, but it seems to work just fine.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of John
Neiberger
Sent: Tuesday, February 05, 2002 9:48 PM
To: Greg Sporton; ccielab@groupstudy.com
Subject: Re: OSPF Totally Stubby Area

An NSSA is a Not So Stubby Area, not a Totally Stubby Area. To
configure these as Totally Stubby Areas, you would not use the
nssa keyword.

A totally stubby area suppresses Type 3/4/5 LSAs. An NSSA
suppresses those same LSAs, yet allows the propagation of Type
7 LSAs which are converted to Type 5 LSAs by the ABR.

So, to configure area 1 as totally stubby:

router ospf 1
 area 1 stub no-summary



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