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Extreme networks VDX8770 switch reports higher fan rpm

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fabric-interconnect-and-management-switches
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brocade
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Applies to

Extreme Networks VDX8770 Switch

Issue

  • Increased temperature in the switch and leading to higher fan rpm which is leading to very noisy environment 
  • Event logs shows the blade temperature is going high

2020/01/13-13:38:35:993021, [HIL-5600], 398250/0, M1 | Active, WARNING, VDX6740T-1G, Fan speed changing per environmental specifications.  Reason: Blade in max temp range (currently max fan speed)., hil_policy_chas, line: 559, comp:emd, ltime:2020/01/13-13:38:35:992849
2020/01/13-13:38:53:586722, [HIL-5600], 398252/0, M1 | Active, WARNING, VDX6740T-1G, Fan speed changing per environmental specifications.  Reason: Blade in max temp range (currently max fan speed)., hil_policy_chas, line: 559, comp:emd, ltime:2020/01/13-13:38:53:586514
2020/01/13-13:39:11:182804, [HIL-5600], 398254/0, M1 | Active, WARNING, VDX6740T-1G, Fan speed changing per environmental specifications.  Reason: Blade in max temp range (currently max fan speed)., hil_policy_chas, line: 559, comp:emd, ltime:2020/01/13-13:39:11:182586

  • The fan speed in this example shows at 9000RPM, where as the normal operating range is 5000 to 6000rpm range

NOSCLI show environment fan:
Mon Jan 13 13:16:35 GMT 2020
********************************************************
show environment fan:
Rbridge-id: 1
Fan 1 is Ok, speed is 9132 RPM
Fan 2 is Ok, speed is 9174 RPM
Fan 3 is Ok, speed is 9049 RPM
Fan 4 is Ok, speed is 9090 RPM

 

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