Area Nssa - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - COMMAND REFERENCE A TO M 2010-10-19 Command Reference Manual

area nssa

Syntax
Release Information
Description
Options
Mode
Copyright © 2010, Juniper Networks, Inc.
[ no ] area { areaId | areaIdInt } nssa [ default-information-originate [ always |
metric absoluteValue | metric-type 1 | metric-type 2 | route-map mapTag ]* ]
[ no-summary ]
Command introduced before JunosE Release 7.1.0.
no-summary keyword added in JunosE Release 7.2.0.
Configures an area as an NSSA and controls generation of type 7 default LSAs. NSSAs
are similar to stub areas but have the additional capability of importing AS external routes
in a limited fashion. The no version removes the specified option for
default-information-originate, removes default-information-originate, or removes the
NSSA designation from the area.
areaId—OSPF area ID in IP address format
areaIdInt—OSPF area ID as a decimal value in the range 0–4294967295
default-information-originate—Causes the generation of a type 7 default LSA if a
default route exists in the routing table.
always—Creates the default route if it does not exist
absoluteValue—Metric applied to the generated type 7 default LSAs; ranges from
0–4294967295
metric-type 1—Cost of the external routes is equal to the sum of all internal costs and
the external cost
metric-type 2—Cost of the external routes is equal to the external cost alone; this is
the OSPF default
mapTag—String of up to 32 alphanumeric characters that specifies a route map applied
to the generated type 7 default LSAs
*—Indicates that one or more parameters can be repeated multiple times in a list in
the command line
no-summary—Restricts T3 summary LSAs from flowing into the NSSA area (T7 external
LSAs and T3 default route LSAs are still injected into the area)
Router Configuration
Chapter 2: A Commands
129