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S6720: No snmp trap for Power PSU2

Created: Apr 2, 2020 07:45:36Latest reply: Apr 12, 2020 04:15:20 147 8 1 0
  Rewarded HiCoins: 1 (problem resolved)

Hello community


I have snmp traps configured for an S6720 switch with dual power supplies.

I receive traps if I disconnect PSU1, but not if I disconnect PSU2.

Why?


Software: VRP (R) software, Version 5.170 (S6720 V200R011C10SPC600)


output of "display power" when PSU 2 is disconnected:

------------------------------------------------------------
Slot    PowerID  Online   Mode   State      Power(W)
------------------------------------------------------------
0       PWR1     Present  AC     Supply     600.00    
0       PWR2     Present  AC     NotSupply  150.00    


output of "display trapbuffer module ENTITYTRAP" (only PWR1 generates traps):

ENTITYTRAP/4/POWERINVALIDRESUME:OID 1.3.6.1.4.1.2011.5.25.219.2.5.6 Power supply is recovered. (Index=67190797, EntityPhysicalIndex=67190797, PhysicalName="POWER Card 0/PWR1", EntityTrapFaultID=136969)
ENTITYTRAP/1/POWERINVALID:OID 1.3.6.1.4.1.2011.5.25.219.2.5.5 Power supply is unavailable for some reason. (Index=67190797, EntityPhysicalIndex=67190797, PhysicalName="POWER Card 0/PWR1", EntityTrapFaultID=136969)


Strange thing: instantly after a reboot of the switch I see a message in the trapbuffer about PSU2, but after this no more traps are generated.

ENTITYTRAP/1/POWERINVALID:OID 1.3.6.1.4.1.2011.5.25.219.2.5.5 Power supply is unavailable for some reason. (Index=67207181, EntityPhysicalIndex=67207181, PhysicalName="POWER Card 0/PWR2", EntityTrapFaultID=136969)


Is this a bug or is somewhere a "filter" for PSU2?


Config of snmp-agent and info-center:

info-center filter-id bymodule-alias LINE LOGIN_FAIL
info-center filter-id bymodule-alias SNMP SNMP_FAIL


snmp-agent
snmp-agent acl 2000
snmp-agent local-engineid <snip>
snmp-agent community read cipher <snip>
snmp-agent sys-info contact <snip>
snmp-agent sys-info location <snip>
snmp-agent sys-info version v2c v3
snmp-agent target-host trap address udp-domain <snip> params securityname cipher <snip> v2c
snmp-agent trap enable


Regards

Steve

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Featured Answers
Steelblue
Created Apr 3, 2020 06:40:12 Helpful(0) Helpful(0)

Why do you use different types of power modules? The power supplies of the switches are in active/standby mode. Since 600 W is used in normal cases, can the 150 W backup power supply support the normal running of the device when the active power supply fails?
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steve_huaw
steve_huaw Created Apr 3, 2020 17:57:42
Hi Steelblue. I wanted first to implement SNMP-traps on a test-system, so it is not relevant for this system which power modules we use.  
steve_huaw
steve_huaw Created Apr 8, 2020 13:34:37
It was not the best answer or the solution, but it got me in the right direction. Thanks.  
All Answers
Popeye_Wang
Popeye_Wang Admin Created Apr 2, 2020 07:51:56 Helpful(0) Helpful(0)

Hello,
It's not normal. An alarm should be generated immediately after the backup power supply is shut down.

It is recommended that you report this issue to the TAC to check whether it is a known issue.

https://e.huawei.com/en/service-hotline-query

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steve_huaw
steve_huaw Created Apr 3, 2020 17:59:18
Thanks, I will try.  
Steelblue
Steelblue Created Apr 3, 2020 06:40:12 Helpful(0) Helpful(0)

Why do you use different types of power modules? The power supplies of the switches are in active/standby mode. Since 600 W is used in normal cases, can the 150 W backup power supply support the normal running of the device when the active power supply fails?
View more
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steve_huaw
steve_huaw Created Apr 3, 2020 17:57:42
Hi Steelblue. I wanted first to implement SNMP-traps on a test-system, so it is not relevant for this system which power modules we use.  
steve_huaw
steve_huaw Created Apr 8, 2020 13:34:37
It was not the best answer or the solution, but it got me in the right direction. Thanks.  
steve_huaw
steve_huaw Created Apr 7, 2020 12:30:57 Helpful(0) Helpful(0)

IT IS INDEED relevant which power module we use. I replaced the 150W module with the same 600W module and now the traps are generated and everything works as expected.

I have still an open support case @huawei, because I'm still wondering why the 150W module is not generating any traps.
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steve_huaw
steve_huaw Created Apr 8, 2020 13:33:02 Helpful(0) Helpful(0)

Big problem, simple solution: The 150W PSU was not compatible with this switch. Always check the datasheet ;-) RTFM!
Problem solved.
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Alcione432
Alcione432 Created Apr 12, 2020 04:15:20 Helpful(0) Helpful(0)

Thanks for share.
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