Type1 LSA

auosauos Member Posts: 186
in CCNP
Hi,
I have OSPF broadcast network, my question is (Type 1 LSA) is only send to DR router, and other routers in segment get this (Type 1 LSA) back from DR.
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Comments

  • networker050184networker050184 Mod Posts: 11,962 Mod
    Not exactly sure what you are asking here but LSA information is only exchanged with the DR/BDR on a segment.
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  • APAAPA Member Posts: 959
    Like networker said......

    DR\BDR is used in a OSPF broadcast topology to limit LSA traffic sent on the segment (rather than all routers exchange information, let's just exchange with a designated router\backup designated router)...

    All routers exchange LSA information with the DR\BDR for the relevant segment... it is the DR\BDRs duty to relay this information all other routers on the segment.

    You'll notice that in a broadcast topology the OSPF neighbors only reach the 'FULL' state with the DR and BDR for that segment.... all other routers on the segment only reach the '2WAY' state with each other.
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  • auosauos Member Posts: 186
    Many thanks for clarification.
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