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Cisco Bug: CSCuo14829 - 3850/03.03.02SE/Stuck Routing Control Q due to IPV6 MLD

Last Modified

Dec 14, 2018

Products (1)

  • Cisco Catalyst 3850 Series Switches

Known Affected Releases

15.0(1)EZ2

Description (partial)

Symptom:BGL.D.09-3800-1#sh platform punt client
  tag      buffer        jumbo    fallback     packets   received   failures

-----SNIP-------------

 65544    0/  96/1600     0/4       0/0        0     0          0     0     0
 65545    0/  96/1600     0/8       0/32       0     0          0     0     0
s65546  511/ 512/1600     0/32      0/512  27369 35180    2507410     0     1
 65547    0/  96/1600     0/8       0/32       0     0          0     0     0
 65548    0/ 512/1600     0/32      0/256   1182  1182      70920     0     0

BGL.D.09-3800-1#show platform punt statistics port-asic 0 cpuq -1 direction rm punt statistics port-asic 0 cpuq -1 direction rx

----SNIP-----

RX (ASIC2CPU) Stats (asic 0 qn 4 lqn 4): 
RXQ  4: CPU_Q_ROUTING_CONTROL
----------------------------------------
Packets received from ASIC     : 27883
Send to IOSd total attempts    : 27883
Send to IOSd failed count      : 1
RX suspend count               : 1
RX unsuspend count             : 0
RX unsuspend send count        : 0

------SNIP------------

Conditions:IOS-XE 3.2.xSE, 3.3.0SE, 3.3.1SE, 3.3.2SE

Caused by IPV6 MLD group specific query packets
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