juniper ex2200c get temperature via snmp

Question

I have a juniper ex2200c and am trying to get the temperature via snmp.
I'v tried this tutorial by juniper, but my switch doesn't seem to answer.

snmpwalk -v 2c -c foobar23 192.168.1.10 1.3.6.1.4.1.2636.3.1.13.1.5
SNMPv2-SMI::enterprises.2636.3.1.13.1.5.1.1.0.0 = ""
SNMPv2-SMI::enterprises.2636.3.1.13.1.5.2.1.1.0 = STRING: "Power Supply: Power Supply 0 @ 0/0/*"
SNMPv2-SMI::enterprises.2636.3.1.13.1.5.7.1.0.0 = STRING: "FPC: EX2200-C-12T-2G @ 0/*/*"
SNMPv2-SMI::enterprises.2636.3.1.13.1.5.8.1.1.0 = STRING: "PIC: 12x 10/100/1000 Base-T @ 0/0/*"
SNMPv2-SMI::enterprises.2636.3.1.13.1.5.8.1.2.0 = STRING: "PIC: 2x (10/100/1000 Base-T or GE SFP) @ 0/1/*"
SNMPv2-SMI::enterprises.2636.3.1.13.1.5.9.1.0.0 = STRING: "Routing Engine 0"

My routing engine should be 9.1.0.0, so when looking at 1.3.6.1.4.1.2636.3.1.13.1.7.9.1.0.0, which should give me the temperature, I get:

snmpwalk -v 2c -c foobar23 192.168.1.10 1.3.6.1.4.1.2636.3.1.13.1.7.9.1.0.0
SNMPv2-SMI::enterprises.2636.3.1.13.1.7.9.1.0.0 = Gauge32: 0

Also when asking less specific I get the following:

snmpwalk -v 2c -c foobar23 192.168.1.10 1.3.6.1.4.1.2636.3.1.13.1.7  
SNMPv2-SMI::enterprises.2636.3.1.13.1.7.1.1.0.0 = Gauge32: 0
SNMPv2-SMI::enterprises.2636.3.1.13.1.7.2.1.1.0 = Gauge32: 0
SNMPv2-SMI::enterprises.2636.3.1.13.1.7.7.1.0.0 = Gauge32: 0
SNMPv2-SMI::enterprises.2636.3.1.13.1.7.8.1.1.0 = Gauge32: 0
SNMPv2-SMI::enterprises.2636.3.1.13.1.7.8.1.2.0 = Gauge32: 0
SNMPv2-SMI::enterprises.2636.3.1.13.1.7.9.1.0.0 = Gauge32: 0

But there must be some temperature sensors:

root@jun1> show chassis environment 
Class Item                           Status     Measurement
Power FPC 0 Power Supply 0           OK        
Temp  FPC 0 GEPHY1                   OK         25 degrees C / 77 degrees F
      FPC 0 GEPHY2                   OK         35 degrees C / 95 degrees F
      FPC 0 GEPHY3                   OK         35 degrees C / 95 degrees F
      FPC 0 GEPHY4                   OK         30 degrees C / 86 degrees F

How can I get the environment Temperature of this switch using snmp?

Answer 1

As stated here on page 10(PDF Page 24):

Temp is unavailable for an EX2200-C switch.

I Also was reading the correct MIB:

jnxOperatingTemp OBJECT-TYPE
   SYNTAX          Gauge32
   MAX-ACCESS      read-only
   STATUS          current
   DESCRIPTION
           "The temperature in Celsius (degrees C) of this 
           subject.  Zero if unavailable or inapplicable."
   ::= { jnxOperatingEntry 7 }

Answer 2

Those you listed on the third section:

SNMPv2-SMI::enterprises.2636.3.1.13.1.7.1.1.0.0 = Gauge32: 0 SNMPv2-SMI::enterprises.2636.3.1.13.1.7.2.1.1.0 = Gauge32: 0 SNMPv2-SMI::enterprises.2636.3.1.13.1.7.7.1.0.0 = Gauge32: 0 SNMPv2-SMI::enterprises.2636.3.1.13.1.7.8.1.1.0 = Gauge32: 0 SNMPv2-SMI::enterprises.2636.3.1.13.1.7.8.1.2.0 = Gauge32: 0 SNMPv2-SMI::enterprises.2636.3.1.13.1.7.9.1.0.0 = Gauge32: 0

are definitely the "OK" states in the "Status" Column.

You need to look at everything below 1.3.6.1.4.1.2636.3.1.13.1 - all I can say without that same walk or the same switch :)