limit OSPF network announcements

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  • cleong
    Aspiring Member
    • Dec 2011
    • 2

    limit OSPF network announcements

    Hi, I have a network with 3 OSPF areas (areas 0, 1, and 2) and I'm trying to get network summarization to work so the Passports in areas 1 only get one route to reach all the networks in area 2 via the ABR, instead of getting 10 individual routes to reach the networks in area 2.

    I set up the summarization using "ip ospf area 0.0.0.1 range 10.200.0.0/255.255.0.0 create advertise-mode summarize lsa-type summary-link advertise-metric 0" on the ABRs and that gets announced to all my Passports in area 1, but I also get announcements for 10.200.0-10.0/24 on the Passports.

    [Area 1 uses 10.100.0-10.0/24, if that matters.]

    Is there a way to get just the 10.200.0.0/16 announcement and not have the individual 10.200.0-10.0/24 announcements?

    Thanks in advance!
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