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  1. lispflowmapping
  2. LISPMAP-164

Negative mapping in SB masking overlapping more specific positive added later to NB

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Details

    • Bug
    • Status: Resolved
    • Highest
    • Resolution: Done
    • unspecified
    • Oxygen
    • General
    • None

    • Operating System: All
      Platform: All

    • 9037
    • Normal

    Description

      Suppose we have 192.167.0.0/16 and 192.169.0.0/16 in NB. A lookup for 192.168.0.1 then generates a negative entry for 192.168.0.0/16 in SB. A new positive for 192.168.1.0/24 is added to NB. Now, a request for 192.168.0.1 should return 192.168.0.0/24. However, NB still returns null, and SB has the 192.168.0.0/16 large prefix as a negative, which will be returned. If an xTR installs the large prefix, it will not send requests for 192.168.1.0/24, thus completely masking/blackholing that prefix.

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            Unassigned Unassigned
            ljakab Lori Jakab
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            Dates

              Created:
              Updated:
              Resolved: