Specifications

area range
16-24 IPv4 Routing Protocol Configuration
area range
UsethiscommandtodefinetherangeofaddressestobeusedbyAreaBorderRouters(ABRs)
whentheycommunicateroutestootherareas.EachSecureStackC3stackcansupportupto 4
OSPFareas.Thenoformofthiscommandstopstheroutesfrombeingsummarized.
Syntax
area area-id range ip-address ip-mask [advertise | no-advertise]
no area area-id range ip-address ip-mask
Parameters
Defaults
Ifnotspecified,advertisemodewillbeset.
Mode
Routerconfiguration:C3(su)‐>router(Config‐router)#
Example
Thisexampleshowshowtodefinetheaddressrangeas172.16.0.0/16forsummarizedroutesfrom
area0.0.0.8:
C3(su)->router(Config)#router ospf 1
C3(su)->router(Config-router)#area 0.0.0.8 range 172.16.0.0 255.255.0.0
area stub
UsethiscommandtodefineanOSPFareaasastubarea.ThisisanareaintowhichAutonomous
SystemexternalASAswillnotbeflooded.Thenoformofthiscommandchangesthestubbackto
aplainarea.
Syntax
area area-id stub [no-summary]
no area area-id stub [no-summary]
Parameters
area‐idSpecifiestheareafromwhichroutesaretobesummarized.Thisisa
decimalvaluefrom0to429496295.
ip‐address SpecifiestheIPaddressassociatedwiththeareaID.
ip‐mask SpecifiesthemaskfortheIPaddress.
advertise|no‐
advertise
(Optional)Entersaddressrangeinadvertisemode,ordo
notadvertise
mode.
area‐id Specifiesthestubarea.Validvaluesaredecimalvaluesoripaddresses.
no‐summary (Optional)PreventsanAreaBorderRouter(ABR)fromsendingLinkState
Advertisements(LSAs)intothestubarea.Whenthisparameterisused,it
meansthatalldestinationsoutsideofthestubareaarerepresentedby
means
ofadefaultroute.