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Stub and NSSA

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  • 1.  Stub and NSSA

    Posted 01-17-2018 07:55

    Hello guys,


    I am currently studying for my Juniper exams and one topic I always got confused at which is OSPF areas.


    I need to create an area which should advertise external routes but it should not receive external routes from another area.


    I believe it is NSSA. Can someone help me with this?


    Thanks in advance 🙂



  • 2.  RE: Stub and NSSA
    Best Answer

    Posted 01-17-2018 08:01

    Yes, You are correct.

    In NSSA area, only LSA1, LSA2 LSA3 and LSA7 are allowed. 

    ABR convert type 7 to type 5 when P bit is set. 


    You can test totally-NSSA where only LSA1, LSA2, LSA7 and one default-route (Summary LSA).



  • 3.  RE: Stub and NSSA

    Posted 01-17-2018 08:21



    Much Appreciated 🙂