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Cisco Bug: CSCuj50356 - %MGBL-IFSTATS-3-COUNTER_OVERRUN seen randomly

Last Modified

Aug 05, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

4.2.31.MGBL 4.3.1.MGBL 5.1.0.MGBL

Description (partial)

The following Syslog message is seen as follows on the console:

LC/0/0/CPU0:Jan 15 18:47:56.164 : statsd_manager_l[339]: %MGBL-IFSTATS-3-COUNTER_OVERRUN : Counter overrun for one or more deltas for interface TenGigE0/0/0/9, stats type 2, from collector pkg/bin/vic, on node 0/0/CPU0.  Overrun counters: OUTPUT BYTES, example overrun value: 18446744073409243993 
RP/0/RSP0/CPU0:Jan 15 18:47:56.171 : statsd_manager_g[1126]: %MGBL-IFSTATS-3-COUNTER_OVERRUN : Counter overrun for one or more deltas for interface Bundle-Ether204, stats type 2, from collector pkg/bin/vic, on node 0/0/CPU0.  Overrun counters: OUTPUT BYTES, example overrun value: 18446744073409243993 
RP/0/RSP1/CPU0:Jan 15 18:47:56.179 : statsd_manager_g[1126]: %MGBL-IFSTATS-3-COUNTER_OVERRUN : Counter overrun for one or more deltas for interface Bundle-Ether204, stats type 2, from collector pkg/bin/vic, on node 0/0/CPU0.  Overrun counters: OUTPUT BYTES, example overrun value: 18446744073409243993  

LC/0/0/CPU0:statsd_manager_l[340]: %MGBL-IFSTATS-3-COUNTER_OVERRUN : Counter overrun for one or more deltas for interface TenGigE0/0/0/21, stats type 2, from collector pkg/bin/vic, on node 0/0/CPU0.  Overrun counters: INPUT BYTES, example overrun value: 18446744069430553424

Symptom:The following Syslog message is seen as follows on the console:

LC/0/0/CPU0:Jan 15 18:47:56.164 : statsd_manager_l[339]: %MGBL-IFSTATS-3-COUNTER_OVERRUN : Counter overrun for one or more deltas for interface TenGigE0/0/0/9, stats type 2, from collector pkg/bin/vic, on node 0/0/CPU0.  Overrun counters: OUTPUT BYTES, example overrun value: 18446744073409243993 
RP/0/RSP0/CPU0:Jan 15 18:47:56.171 : statsd_manager_g[1126]: %MGBL-IFSTATS-3-COUNTER_OVERRUN : Counter overrun for one or more deltas for interface Bundle-Ether204, stats type 2, from collector pkg/bin/vic, on node 0/0/CPU0.  Overrun counters: OUTPUT BYTES, example overrun value: 18446744073409243993 
RP/0/RSP1/CPU0:Jan 15 18:47:56.179 : statsd_manager_g[1126]: %MGBL-IFSTATS-3-COUNTER_OVERRUN : Counter overrun for one or more deltas for interface Bundle-Ether204, stats type 2, from collector pkg/bin/vic, on node 0/0/CPU0.  Overrun counters: OUTPUT BYTES, example overrun value: 18446744073409243993  

LC/0/0/CPU0:statsd_manager_l[340]: %MGBL-IFSTATS-3-COUNTER_OVERRUN : Counter overrun for one or more deltas for interface TenGigE0/0/0/21, stats type 2, from collector pkg/bin/vic, on node 0/0/CPU0.  Overrun counters: INPUT BYTES, example overrun value: 18446744069430553424

Conditions:The messages appears randomly and the exact trigger/condition for the message identified: the reading of the MSB and LSB registers is not atomic; when the LSB is almost overflow, the first reading of LSB and then the next reading of MSB will get an extra carry bit in MSB.

Related Community Discussions

<key>CSCuj50356</key> - percentMGBL-IFSTATS-3-COUNTER_OVERRUN seen randomly
Hello, Does this bug cosmetic of have service impact since the severity is 3?
Latest activity: Jun 02, 2015
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