All routers must agree on stub status. But a standard stub area only filters external routes. All other inter-area routes still make it in. I believe that totally stubby areas are a Cisco proprietary implementation. However, only the ABR attaching to area 0 needs the 'area stub no-summary' command. All others just need the 'area stub' command. So you might get away with a totally stubby area even though you aren't purely Cisco. Incidentally, I have no idea who is implementing those "stud areas" but it sure sounds interesting.
Debbie Westall wrote: > > Greetings, > > I have the following scenario: > > area 0 (backbone) > | > | > | > area 20 (stub network) (these are RiverStone MLSs) > | > | > uBR routers (static routing) > > I would like to set up OSPF between the Riverstones and the > Cisco uBRs. We thought to set up the uBRs as stub networks > also, but we are seeing the full OSPF routing table on the uBRs > (which are already running high utilization). We would only > like to see the default route on the uBRs. So would we need to > set these up as NSSA or Totally stubby? Or should we create a > "new" area and make that a stub of the existing area 20? We > have experimented with filtering and we are able to filter out > everything but the default, but I don't think we should have to > do that either. > > Right now our lab equipment is in the process of being moved to > our new building so I can't program this up right now to test. > > Thanks for the assist!!! > > Debbie Westall > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34412&t=34375 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
