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Dell SmartFabric OS10 User Guide Release 10.5.3

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Stub areas

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

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

Configure stub area

OS10(config)# router ospf 10
OS10(conf-router-ospf-10)# area 10.10.5.1 stub
View stub area configuration
OS10# show ip ospf
Routing Process ospf 10 with ID 130.6.196.14
Supports only single TOS (TOS0) routes
It is Flooding according to RFC 2328
SPF schedule delay 1000 msecs, Hold time between two SPFs 10000 msecs
Convergence Level 0
Min LSA origination 0 msec, Min LSA arrival 1000 msec
Min LSA hold time 5000 msec, Max LSA wait time 5000 msec
Number of area in this router is 1, normal 0 stub 1 nssa 0
   Area  (10.10.5.1)
       Number of interface in this area is 0
       SPF algorithm executed 1 times
       Area ranges are
OS10# show running-configuration ospf
!
router ospf 10
 area 10.10.5.1 stub

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