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High LP CPU utilization after L3 topology changes

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TitleHigh LP CPU utilization after L3 topology changes
Symptoms
  • High LP CPU utilization after L3 topology changes
  • source MAC address learning (SA) learning enabled for routed packets
  • Connected VRF route is leaked into another VRF for which label redistribution is blocked by BGP route map
  • LP console message below is displayed multiple times:
                  kbp_duplicate_entry_IPDAVC[0] idx : 0x002b2938 tbl_id : 48 vc_label = 500010, pfx : 10.34.0.0
Environment
  • MLXe
  • NetIron OS 6.0.00f code
  • Multi-slot LAG
  • One arm routing
  • Inter-VRF routing
Cause
DEFECT000660830  (Line card module may go high with the following error message on Line card console:- kbp_duplicate_entry_IPDAVC[0] idx : 0x002b198f tbl_id : 48 vc_label = 500010, pfx : x.y.0.0/16).
Resolution
Upgrade code to 6.2.00c.
Additional notes

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