SNMP Monitoring Juniper EX8216 switches for Rx/Tx power, temperature and bias current

juniper-exjuniper-mxmonitoringsnmp

I am trying to monitor individual transceivers on two EX8216 Juniper switches regarding the following parameters:

  • RxPower
  • TxPower
  • Bias Current
  • Temperature

The methodology I am following is the following: I do an SNMP walk on the 1.3.6.1.2.1.2.2.1.2 (ifDescr) OID to view the switches' interfaces and I identify the indexes of the transceivers I am interested in. Having identified the correct indexes I use the Juniper jnxDomCurrentTable MIB to identify the OID of the aforementioned parameters that I want to monitor. Namely, the OIDs I am using are the following:

 - jnxDomCurrentRxLaserPower :.1.3.6.1.4.1.2636.3.60.1.1.1.1.5.
 - jnxDomCurrentTxLaserBiasCurrent : .1.3.6.1.4.1.2636.3.60.1.1.1.1.6.
 - jnxDomCurrentTxLaserOutputPower: .1.3.6.1.4.1.2636.3.60.1.1.1.1.7.
 - jnxDomCurrentModuleTemperature: .1.3.6.1.4.1.2636.3.60.1.1.1.1.8.

However, when I do SNMP GETs on the two EX8216 switches I do not retrieve any values, instead I receive a message that the OID does not exist: "No Such Instance currently exists at this OID".

The methodology I am following works fine for two MX960 Juniper devices and I am able to monitor the parameters mentioned above. However, it does not for the two EX8216 switches.

Thus my questions are:

  1. Do EX8216 Juniper switches support the Juniper Digital Optical
    Monitoring MIB    ?
  2. If they do support this MIB, do I have to do something further to
    enable SNMP polling of individual transceivers on the switches for
    the specific OIDs I mentioned above?
  3. Finally, if they do not support it, is there another way to SNMP
    poll those switches for the parameters I am interested in?

I would be grateful for any pointers or advice on how to go about achieveing my goal.

Best Answer

Unfortunately the DOM MIB does not seem to be supported on any of the EX 22/32/42/82xx switches. I've been bitten by this in the past.

The values are present on the device eg: show interfaces diagnostics optics xe-1/1/0, but not exported into the MIB tree.

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