Westermo RedFox Series - Manual (Page 608)

Westermo OS Management Guide
Version 4.17.0-0
Area 0.0.0.1
NSSA
Area 0.0.0.2
Stub
RIP Network
Area 0.0.0.0
(Backbone)
Internet Internet
(BGP)
ABR
R
R
R
R
R
R
R
R
R
ASBR
ASBR
R
ASBR
R
ABR
Figure 27.4: Topology where NSSA areas are useful.
As with stub areas, NSSAs are able to prohibit inter-area routing information to
be distributed inside the area (use ”nssa no-summary” on the ABRs of the area).
Such areas are called NSSA totally stub areas.
The backbone area cannot be configured as a NSSA area.
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