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  1. bgpcep
  2. BGPCEP-284

Routes to be withdrawn ignored when UPDATE contains both WITHDRAWN ROUTES and NLRI fields.

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Details

    • Bug
    • Status: Resolved
    • Resolution: Done
    • Bugzilla Migration
    • Bugzilla Migration
    • BGP
    • None
    • Operating System: All
      Platform: All

    • 4409

    Description

      First UPDATE advertised a feasible routes (8.0.1.0/28, 8.0.1.16/28) in NLRI variable. Second UPDATE announced next two routes in NLRI and the 8.0.1.0/28 as to be withdrawn from service in WITHDRAWN ROUTES variable. The withdrawal is not processed but it shall be (RFC 4271, chapter 4.3, page 20). For details see the attached karaf.log, please.

      robot/report/log after the 8.0.1.0/28 withdrawal - single UPDATE:
      Count prefixes in {"topology":[{"topology-id":"example-ipv4-topology","topology-types":{},"node":[{"node-id":"192.0.2.1","l3-unicast-igp-topology:igp-node-attributes":{"prefix":[

      {"prefix":"8.0.1.48/28"}

      ,

      {"prefix":"8.0.1.16/28"}

      ,

      {"prefix":"8.0.1.0/28"}

      ,

      {"prefix":"8.0.1.32/28"}

      ]}}],"server-provided":true}]}.

      Reproducible for the distribution-karaf-0.3.1-Lithium-SR1.zip as well for the latest distribution-karaf-0.3.2-20151003.125909-114.zip.

      Note: the same scenario using dedicated UPDATES for NLRI and WITHDRAWN ROUTES variables works fine:
      robot/report/log after the 8.0.1.0/28 withdrawal - dedicated UPDATEs:
      Count prefixes in {"topology":[{"topology-id":"example-ipv4-topology","topology-types":{},"node":[{"node-id":"192.0.2.1","l3-unicast-igp-topology:igp-node-attributes":{"prefix":[

      {"prefix":"8.0.1.48/28"}

      ,

      {"prefix":"8.0.1.16/28"}

      ,

      {"prefix":"8.0.1.32/28"}

      ]}}],"server-provided":true}]}.

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            cdgasparini Claudio David Gasparini
            rsajben@cisco.com Radovan Sajben
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            Dates

              Created:
              Updated:
              Resolved: