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Cisco Bug: CSCus76562 - High LC CPU in netio and ipv6_io

Last Modified

May 08, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

5.1.3.BASE 5.2.1.BASE

Description (partial)

<B>Symptom:</B>
High CPU on LC CPU caused by netio and ipv6_io
RP/0/RSP0/CPU0:Tugela#top dumbtty lo 0/0/cpu0
Tue Feb  3 10:09:01.024 CET
Computing times...176 processes; 808 threads;
CPU states: 67.5% idle, 32.0% user, 0.4% kernel
Memory: 8192M total, 5688M avail, page size 4K
Time: Tue Feb 03 10:09:03.904 CET

   JID   TID LAST_CPU PRI STATE  HH:MM:SS      CPU  COMMAND
   272     3   3      10 Run    12:40:22    14.23% netio
   243     1   2      10 Rcv     0:45:01    12.91% ipv6_io

<B>Conditions:</B>
ipv6 enabled on interface and specific packet received

This is generic to all IOS-XR systems. Especially ASR9k and CRS
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