C
HAPTER
45
| IP Routing Commands
Open Shortest Path First (OSPFv2)
– 1054 –
EXAMPLE
This example creates a summary address for all routes contained in
192.168.x.x.
Console(config-router)#summary-address 192.168.0.0 255.255.0.0
Console(config-router)#
RELATED COMMANDS
area range (1049)
redistribute (1052)
area nssa This command defines a not-so-stubby area (NSSA). To remove an NSSA,
use the no form without any optional keywords. To remove an optional
attribute, use the no form without the relevant keyword.
SYNTAX
[no] area area-id nssa
[translator-role [candidate | never | always]] |
[no-redistribution] | [no-summary] | [default-information-
originate [metric metric-value | metric-type type-value]]
area-id - Identifies the NSSA. The area ID can be in the form of an
IPv4 address or as a four octet unsigned integer ranging from 0-
4294967295.
translator-role - Indicates NSSA-ABR translator role for Type 5
external LSAs.
candidate - Router translates NSSA LSAs to Type-5 external
LSAs if elected.
never - Router never translates NSSA LSAs to Type-5 external
LSAs.
always - Router always translates NSSA LSAs to Type-5
external LSAs.
no-redistribution - Use this keyword when the router is an NSSA
Area Border Router (ABR) and you want the redistribute command
to import routes only into normal areas, and not into the NSSA. In
other words, this keyword prevents the NSSA ABR from advertising
external routing information (learned via routers in other areas)
into the NSSA.
no-summary - Allows an area to retain standard NSSA features,
but does not inject inter-area routes into this area.
default-information-originate - When the router is an NSSA
Area Border Router (ABR) or an NSSA Autonomous System
Boundary Router (ASBR), this parameter causes it to generate
Type-7 default LSA into the NSSA. This default provides a route to
other areas within the AS for an NSSA ABR, or to areas outside the
AS for an NSSA ASBR.
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