question to mr / keith bogart











image

HELLO MY SIR





iam still into ospf ,
section "OSPF Metric Calculation for Intra-Area & Inter-Area
Routes"






as you explain into this
example i have big problem:-






if abr-1 inject 1.1.1.0/24
from area 0 into area 1 and rtr-a received this network , into this case rtr-a
can also send same network 1.1.1.0/204 to abr-2 and abr-2 will inject this
network 1.1.1.0/24 into area 0 again and then we have loop into our network






so question , how abr-1 or
abr-2 into your example ( as you see into my picture uploaded) how abr prevent
loop happened into network?






thanks 
 











image







Comments

  • The ABR receives but does not make use of type3 lsa received inbound on a non-backbone area. Thus loop is prevented.

    Sent from my iPhone

    On May 16, 2015, at 15:16, Mohamed_atallah <[email protected]> wrote:










    HELLO MY SIR


    iam still into ospf , section "OSPF Metric Calculation for Intra-Area & Inter-Area Routes"



    as you explain into this example i have big problem:-



    if abr-1 inject 1.1.1.0/24 from area 0 into area 1 and rtr-a received this network , into this case rtr-a can also send same network 1.1.1.0/204 to abr-2 and abr-2 will inject this network 1.1.1.0/24 into area 0 again and then we have loop into our network



    so question , how abr-1 or abr-2 into your example ( as you see into my picture uploaded) how abr prevent loop happened into network?



    thanks 





















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