35-188
Switch(config)#access-list 1 deny 172.22.0.0 0.0.0.255
Switch(config)#access-list 1 permit any
Switch(config)#router ospf 100
Switch(config-router)#area 1 filter-list access 1 in
35.4 area nssa
Command:
area <id> nssa [TRANSLATOR| no-redistribution |DEFAULT-ORIGINATE | no-summary]
no area <id> nssa [TRANSLATOR| no-redistribution | DEFAULT-ORIGINATE | no-summary]
Function:
Set the area to Not-So-Stubby-Area (NSSA) area.
Parameter:
<id> is the area number which could be digits ranging between 0～4294967295, and also as an IP
address.
TRANLATOR = translator-role {candidate|never|always}, specifies the LSA translation mode for
routes: candidate means if the router is elected translator, Type 7 LSA can be translated to Type-5
LSA, the default is candidate.
never means the router will never translate Type 7 LSA to Type 5 LSA.
always means the route always translate Type 7 LSA to Type 5 LSA.
no-redistribution means never distribute external-LSA to NSSA.
DEFAULT-ORIGINATE=default-information-originate [metric <0-16777214>] [metric-type
<1-2>], generate the Type-7 LSA.
metric <0-16777214> specify the metric value.
metric-type <1-2> specifies the metric value type of external-LSA , default value is 2.
no-summary shows not injecting area route to the NSSA.
Default:
No NSSA area defined by default.
Command Mode:
OSPF protocol mode
Usage Guide:
The same area can not be both NSSA and stub at the same time.
Example:
Set area 3 to NSSA.
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