简介
本文档介绍在思科聚合服务路由器(ASR)5500平台上看到的简单网络管理协议(SNMP)陷阱报告的与风扇故障相关的问题和解决方案。这种情况通常在平台的正常运行中发生，尽管这种情况很罕见。
问题
在某些情况下，ASR 5500平台上出现与风扇编号1和2相关的FanFailed警报，如下所示：
Tue Apr 01 16:07:07 2014 Internal trap notification 22 (FanFailed)
fan number 2 fan status Communication Error
Tue Apr 01 16:07:27 2014 Internal trap notification 22 (FanFailed)
fan number 1 fan status Communication Error
下部后风扇和下部前风扇当前报告未知状态，此时节点卡的一般温度似乎正常。
[local]ASR5500# show fan
Tuesday April 01 16:47:04 BST 2014
Lower Rear Fan Tray:
State: Unknown
Speed: 0%
Temperature: Unknown
Upper Rear Fan Tray:
State: Normal
Speed: 50%
Temperature: 27C
Lower Front Fan Tray:
State: Unknown
Speed: 0%
Temperature: Unknown
Upper Front Fan Tray:
State: Normal
Speed: 50%
Temperature: 27C
解决方案
此问题通常在您重新拔插风扇模块时解决。完成以下步骤以验证状态是否正常：
- 滑出风扇模块。等待两到三分钟，然后滑回插槽。
- 输入以下命令以验证风扇是否处于正常状态：
[local]ASR5500# show fans verbose
Thursday May 28 19:16:54 EDT 2015
Location State Speed Temp Version WD Tach Current
----------- ----------------------- ----- --------
Lower Rear Normal 50% 24C 0.2.5 E -- --
Fan 00 Normal -- -- -- -- 3280 386mA
Fan 01 Normal -- -- -- -- 3280 406mA
Fan 02 Normal -- -- -- -- 3320 416mA
Fan 03 Normal -- -- -- -- 3240 396mA
Fan 04 Normal -- -- -- -- 3280 440mA
Fan 05 Normal -- -- -- -- 3280 430mA
Fan 06 Normal -- -- -- -- 3240 460mA
Fan 07 Normal -- -- -- -- 3280 493mA
Fan 08 Normal -- -- -- -- 3240 470mA
Upper Rear Normal 50% 39C 0.2.5 E -- --
Fan 00 Normal -- -- -- -- 3240 430mA
Fan 01 Normal -- -- -- -- 3240 416mA
Fan 02 Normal -- -- -- -- 3280 416mA
Fan 03 Normal -- -- -- -- 3320 460mA
Fan 04 Normal -- -- -- -- 3280 416mA
Fan 05 Normal -- -- -- -- 3320 416mA
Fan 06 Normal -- -- -- -- 3240 430mA
Fan 07 Normal -- -- -- -- 3280 430mA
Fan 08 Normal -- -- -- -- 3320 430mA
Lower Front Normal 50% 23C 0.2.5 E -- --
Fan 09 Normal -- -- -- -- 2520 146mA
Fan 10 Normal -- -- -- -- 2520 146mA
Fan 11 Normal -- -- -- -- 2400 146mA
Upper Front Normal 50% 35C 0.2.5 E -- --
Fan 09 Normal -- -- -- -- 2400 146mA
Fan 10 Normal -- -- -- -- 2520 146mA
Fan 11 Normal -- -- -- -- 2400 146mA
- 输入以下命令以验证风扇模块是否运行正确的固件版本：
[local]ASR5500# show hardware version fans
Thursday May 28 19:16:54 EDT 2015
Fan Tray Controller Version
Upper Fan Tray: 0.2.5
Lower Fan Tray: 0.2.5
- 输入以下命令以验证SNMP陷阱错误已清除，并且在重新拔插风扇模块后没有错误：
[local]ASR5500# show snmp trap hist ver | grep -i fan
Saturday February 07 08:22:32 UTC 2015
Sat Feb 07 07:56:38 2015 Internal trap notification 1509 (CiscoFruFanStatusChanged)
FRU entity Fan tray fan status changed to Communication Error at Lower Front
Sat Feb 07 07:56:38 2015 Internal trap notification 22 (FanFailed) fan number 1
fan status Communication Error
Sat Feb 07 07:56:38 2015 Internal trap notification 1503 (EntStateOperDisabled)
Fan Tray(Lower Front) Admin state:"Unknown", Alarm severity:"Major"
Sat Feb 07 07:56:58 2015 Internal trap notification 1509 (CiscoFruFanStatusChanged)
FRU entity Fan tray fan status changed to Normal at Lower Front
Sat Feb 07 08:09:06 2015 Internal trap notification 1509 (CiscoFruFanStatusChanged)
FRU entity Fan tray fan status changed to Communication Error at Lower Front
Sat Feb 07 08:09:06 2015 Internal trap notification 22 (FanFailed) fan number 1
fan status Communication Error
Sat Feb 07 08:09:06 2015 Internal trap notification 1503 (EntStateOperDisabled)
Fan Tray(Lower Front) Admin state:"Unknown", Alarm severity:"Major"
Sat Feb 07 08:10:26 2015 Internal trap notification 1509 (CiscoFruFanStatusChanged)
FRU entity Fan tray fan status changed to Normal at Lower Rear
Sat Feb 07 08:10:26 2015 Internal trap notification 1509 (CiscoFruFanStatusChanged)
FRU entity Fan tray fan status changed to Normal at Lower Front
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