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Conference npss::gigaswitch

Title:GIGAswitch
Notice:GIGAswitch/FDDI Jan 97 BL3.1 914.0 documentation 412.1ion 412.1
Moderator:NPSS::MDLYONS
Created:Wed Jul 29 1992
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:995
Total number of notes:4519

118.0. "SNMP (cabinetTemperature) temperatures for values?" by GUCCI::DMCCLOUD (Dennis McCloud - SOA ANC) Thu Sep 30 1993 22:50

T.RTitleUserPersonal
Name
DateLines
118.1SNMP cab temp made easySCHOOL::WERTHTue Oct 05 1993 13:0910
118.2Fault light @ 35 and shutdown at 40 deg C?GUCCI::DMCCLOUDDennis McCloud - Eastern Client/Server ConsultantTue Oct 05 1993 22:4914
118.3Q> temperature fault lightTKOV51::HAYAKAWAKouhei Hayakawa, NPB/MS, Osaka HUB6FFri Mar 28 1997 09:2933
118.4NPSS::MDLYONSMichael D. Lyons DTN 226-6943Fri Mar 28 1997 12:4514
These are the correct values:
    
cabinetTemperature

normal(1)		50 - 95 F    10 - 35 C
high(2)			95 - 110 F   35 - 43 C
excessivelyHigh(3)	> 110 F      > 43 C     causes a shutdown 
low(4)			35 - 50 F    2 - 10 C
excessivelyLow(5)	< 35 F       < 2 C      causes a shutdown  
    
       How are you measuring the temperature?  The GIGAswitch/FDDI measures
    the temperature inside the chassis.
    
    MDL
118.5TKOV51::HAYAKAWAKouhei Hayakawa, NPB/MS, Osaka HUB6FFri Mar 28 1997 14:0227
>       How are you measuring the temperature?  The GIGAswitch/FDDI measures
>    the temperature inside the chassis.

	I measured on and under the GIGAswitch/FDDI.
    
           32 deg C (input air)
	_______________
       |               |
       |               |
       |               |
       |  linecard     |
       |               |
       |               |
       |---------------|
       |   Fan Tray    |
       |---------------|
       |  Power Unit   |
       |               |
       |_______________|

	   34 deg C (output air)

	In this case, is the GIGAswitch/FDDI nomal status?
	Or in this environment, do you think the temperature inside 
	the chassis is over 35 deg C?

Kohei
118.6NPSS::MDLYONSMichael D. Lyons DTN 226-6943Fri Mar 28 1997 16:2515
        ...the status is what the PSC says it is.  Since we're only talking
    a difference of a degree or two, I would definitely expect to see it higher
    inside the chassis.
    
        OBM (show box configuration) shows the status, as well as SNMP...
    
        I don't think it's worth investigating myself, since I know it's
    been looked at before, but if you don't have anything better to do,
    just remove the PSC assembly and measure the temperature at the top of
    the PSC opening.  Although removal of the assembly will turn the fans
    on full speed, and affect the air flow, you may still be able to
    measure a difference inside and outside the chassis.
    
    MDL