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Cisco Bug: CSCut24229 - N5K platform-spikes in ifHCOutOctects count on FEX HIF ports

Last Modified

Aug 21, 2015

Products (10)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 5672UP Switch
  • Cisco Nexus 56128P Switch
  • Cisco Nexus 5696Q Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5596T Switch

Known Affected Releases

7.0(5)N1(1a)

Description (partial)

Symptom:
customer is using 5.1.3.N2.1b
and i test 7.0.5.N1.1a, it is also affected

=============7.0.5.N1.1a===============
>>>Monitor the egress rate of port e101/1/38
>>>ixia send out traffic with packet-size 1500 bytes

Nexus5596# show int e101/1/38 | in rate
  30 seconds input rate 192 bits/sec, 0 packets/sec
  30 seconds output rate 1004741816 bits/sec, 83728 packets/sec
    input rate 128 bps, 0 pps; output rate 1.00 Gbps, 83.62 Kpps
    

C:\Users\CALO>snmpwalk -c cisco -v 2c 14.1.116.143 ifHCOutOctets.526649664
IF-MIB::ifHCOutOctets.526649664 = Counter64: 47699944926
<1 minutes interval>
C:\Users\CALO>snmpwalk -c cisco -v 2c 14.1.116.143 ifHCOutOctets.526649664
IF-MIB::ifHCOutOctets.526649664 = Counter64: 56478601588


port rate via ifHCOutOctets =(56478601588-47699944926)*8/60=1,170,487,554.9 bps=1.17Gbps


C:\Users\CALO>snmpwalk -c cisco -v 2c 14.1.116.143 ifHCOutOctets.526649664
IF-MIB::ifHCOutOctets.526649664 = Counter64: 126110801317

C:\Users\CALO>snmpwalk -c cisco -v 2c 14.1.116.143 ifHCOutOctets.526649664
IF-MIB::ifHCOutOctets.526649664 = Counter64: 134265520698
port rate via ifHCOutOctets =(134265520698-126110801317)*8/60=1,087,295,917.47bps=1.087Gbps

Conditions:
customer is using 5.1.3.N2.1b
and i test 7.0.5.N1.1a, it is also affected
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