OS10 Enterprise Edition User Guide Release 10.4.1.0

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Configure Stub Areas

The Type 5 LSAs are not flooded into stub areas. The ABR advertises a default route into the stub area to which it is attached. Stub area routers use the default route to reach external destinations.

  1. Enable OSPFv3 routing and enter ROUTER-OSPFv3 mode (1 to 65535).
    router ospfv3 
                                           instance number
                                        
  2. Configure an area as a stub area in ROUTER-OSPFv3 mode.
    area 
                                           area-id stub [no-summary]
                                        
    • area-id — Enter the OSPFv3 area ID as an IP address (A.B.C.D) or number (1 to 65535).
    • no-summary — (Optional) Enter to prevent an ABR from sending summary LSAs into the stub area.

Configure Stub Area

OS10(config)# router ospfv3 10
                                 OS10(conf-router-ospf-10)# area 10.10.5.1 stub no-summary
                              
View Stub Area Configuration
OS10# show running-configuration ospfv3 
                                 !
                                 interface ethernet1/1/3
                                 ipv6 ospf 65 area 0.0.0.2
                                 !
                                 router ospfv3 65
                                 area 0.0.0.2 stub no-summary
                                 
                                 
                                 OS10# show ipv6 ospf database 
                                 OSPF Router with ID (199.205.134.103) (Process ID 65)
                                 
                                 Router Link States (Area 0.0.0.2)
                                 
                                 ADV Router      Age       Seq#        Fragment ID Link count Bits
                                 -------------------------------------------------------------------
                                 199.205.134.103 32        0x80000002  0           1                
                                 202.254.156.15  33        0x80000002  0           1          B     
                                 
                                 Net Link States (Area 0.0.0.2)
                                 
                                 ADV Router      Age       Seq#        Link ID   Rtr count
                                 ----------------------------------------------------------
                                 202.254.156.15  38        0x80000001  12        2         
                                 
                                 Inter Area Prefix Link States (Area 0.0.0.2)
                                 
                                 ADV Router      Age       Seq#        Prefix
                                 -----------------------------------------------------------------
                                 202.254.156.15  93        0x80000001  ::/0                                
                                 
                                 Intra Area Prefix Link States  (Area 0.0.0.2)
                                 
                                 ADV Router      Age       Seq#        Link ID   Ref-lstype Ref-LSID
                                 -------------------------------------------------------------------
                                 202.254.156.15  34        0x80000003  65536     0x2002     12      
                                 
                                 Link (Type-8) Link States (Area 0.0.0.2)
                                 
                                 ADV Router      Age       Seq#        Link ID   Interface
                                 --------------------------------------------------------------
                                 199.205.134.103 42        0x80000001  12        ethernet1/1/3       
                                 202.254.156.15  54        0x80000001  12        ethernet1/1/3 
                              

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