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Cisco Bug: CSCul19908 - False positive transceiver warnings on Nexus 5000

Last Modified

Feb 22, 2018

Products (7)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5020 Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5010 Switch
  • Cisco Nexus 5596T Switch

Known Affected Releases

5.2(1)N1(5)

Description (partial)

Symptom:
On a Nexus 5000 switch, false transceiver warnings are seen in the syslog.

%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, High Temperature Warning
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, Low Temperature Warning
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, High Tx Power Warning
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, Low Tx Power Warning
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, High Rx Power Warning
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, Low Rx Power Warning
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, High Current Warning
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, Low Current Warning

%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, High Temperature Warning cleared
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, Low Temperature Warning cleared
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, High Tx Power Warning cleared
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, Low Tx Power Warning cleared
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, High Rx Power Warning cleared
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, Low Rx Power Warning cleared
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, High Current Warning cleared
%ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/1, Low Current Warning cleared

Conditions:
Nexus 5000 switch is running NX-OS 5.2(1)N1(5) and both High and Low warnings are seen for the same test. E.g. Temperature, TX Power, RX Power, Current.

Related Community Discussions

Does this mean a bad SFP+ module?
I have brand new 9504 with two 48Port line cards and NX-OS 7.0(3)I4(6). I have port 1/47 connected with 10Gbps SFP+ but I got warning messages periodically. %ETHPORT-4-IF_SFP_WARNING: Interface Ethernet1/47, High Rx Power Warning I did check the SFP+ module. Does it look abnormal to you? N9K1# show interface eth1/47 transceiver details Ethernet1/47     transceiver is present     type is 10Gbase-ER     name is CISCO-OCLARO     part number is TRS7050EN-S103     revision is 0012     serial number is ...
Latest activity: Aug 17, 2017
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