Fabric Chassis MIB

The Juniper Networks enterprise-specific SNMP Fabric Chassis MIB (mib-jnx-fabric-chassis) provides hardware information about the QFabric system and its component devices in a single MIB. The Fabric Chassis MIB is based on the Juniper Networks enterprise-specific Chassis MIB that provides information for individual devices. Unlike the Chassis MIB, the Fabric Chassis MIB represents the QFabric system component devices as part of the QFabric system. Only the information from the Fabric Chassis MIB (and not from individual Chassis MIBs) is available to SNMP management clients of the QFabric system.

The Fabric Chassis MIB uses the basic information structure of the Chassis MIB, but adds another level of indexing that provides detailed information about QFabric system devices. Each physical device in a QFabric system (such as a Node device or an Interconnect device) is represented with its hardware components, including the power supply, fans, and front and rear cards.

Note: Information about the Director group and the Virtual Chassis is not available in the Fabric Chassis MIB at this time.

As in other SNMP systems, the SNMP manager resides on the network management system (NMS) of the network to which the QFabric system belongs. The SNMP agent (snmpd) resides in the QFabric system Director software and is responsible for receiving and distributing all traps as well as responding to all queries from the SNMP manager. In addition, there is an SNMP subagent running in the Routing Engine of each Node group and Interconnect device. The SNMP subagent manages the information about the component device, and that information is communicated to the SNMP agent in the Director software as needed. Traps that are generated by a Node device are sent to the SNMP agent in the Director software, which in turn processes and sends them to the target IP addresses that are defined in the SNMP configuration.

Tables and objects in the Fabric Chassis MIB include:

• Tables that have counterparts in the Chassis MIB:
  • jjnxFabricContainersTable—Root OID is 1.3.6.1.4.1.2636.3.42.2.2.2. Provides information about different types of containers in QFabric system devices. Containers for Interconnect devices include fan trays, power supply units, and control boards, and so on. Containers for Node devices include fan trays, power supply units, Flexible PIC Concentrator (FPC), PICs, and so on.
  • jnxFabricContentsTable—Root OID is 1.3.6.1.4.1.2636.3.42.2.2.3. Contains contents that are present across all devices represented in the jnxFabricDeviceTable object. Contents in the Interconnect devices include fan trays and control boards. Contents in the Node devices include fan trays and power supply units. This table includes all field replaceable units (FRUs) and non-FRUs for QFabric system devices.
  • jnxFabricFilledTable—Root OID is 1.3.6.1.4.1.2636.3.42.2.2.4. Shows the status of containers in QFabric devices. The jnxFabricFilledState object represents the state of the component: unknown (1), empty (2), or filled (3).
  • jnxFabricOperatingTable—Root OID is 1.3.6.1.4.1.2636.3.42.2.2.5. Represents different operating parameters for the contents that are populated in the jnxFabricContentsTable object. Contents include fan trays, power supply units, FPC, PIC, and Routing Engine on each Node device and Interconnect device. The jnxFabricOperatingState object provides the state of the device: unknown (1), running (2), ready (3), reset (4), runningAtFullSpeed (5, for fans only), down (6), off (6, for power supply units), or standby (7).
  • jnxFabricRedundancyTable—Root OID is 1.3.6.1.4.1.2636.3.42.2.2.6. Represents the redundancy information that is available at different subsystem levels across the QFabric system. Information about the Routing Engines in Node devices is included, but there are no corresponding entries for Interconnect devices in this table. The jnxFabricRedundancyState object indicates the state of the subsystem: unknown (1), master (2), backup (3), or disabled (4).

    Note: Information about redundant Director devices, virtual machines (VMs) within Director groups, and Virtual Chassis devices are not available at this time.

  • jnxFabricFruTable—Root OID is 1.3.6.1.4.1.2636.3.42.2.2.7. Contains all FRUs for the QFabric system in the jnxFabricDeviceTable table. The FRUs are listed regardless of whether or not they are installed or online. The jnxFabricFruState object represents the state of the FRU, including online, offline, or empty, and so on. This table also contains information about each FRU, such as name, type, temperature, time last powered on, and time last powered off.
• A table specific to the Fabric Chassis MIB called jnxFabricDeviceTable that contains information about all devices in the QFabric system. This table organizes scalar variables represented in the Chassis MIB into a table format for the QFabric system component devices. Columns in this table include device information such as model, device alias, and serial number. The jnxFabricDeviceIndex identifies each QFabric system device (Node device and Interconnect device). The root OID is 1.3.6.1.4.1.2636.3.42.2.2.1.

  Note: At this time, information about the Director group and the Virtual Chassis is not available. In addition, the following objects are not supported: jnxFabricDeviceEntryRevision, jnxFabricDeviceEntryFirmwareRevision, and jnxFabricDeviceEntryKernelMemoryUsedPercent.

• Scalar variables that describe the QFabric system as a whole (root OID is 1.3.6.1.4.1.2636.3.42.2.1):
  • jnxFabricClass
  • jnxFabricDescr
  • jnxFabricSerialNo
  • jnxFabricRevision
  • jnxFabricLastInstalled
  • jnxFabricContentsLastChange
  • jnxFabricFilledLastChange

  Note: The jnxFabricFirmwareRevision scalar variable is not supported at this time.

• Two groups of SNMPv2 traps that are defined in the MIB:
  • Traps in the jnxFabricChassisTraps group indicate an alarm condition. The root OID for this trap group is 1.3.6.1.4.1.2636.4.19:
    • jnxFabricPowerSupplyFailure
    • jnxFabricFanFailure
    • jnxFabricOverTemperature
    • jnxFabricRedundancySwitchover
    • jnxFabricFruRemoval
    • jnxFabricFruInsertion
    • jnxFabricFruPowerOff
    • jnxFabricFruPowerOn
    • jnxFabricFruFailed
    • jnxFabricFruOffline
    • jnxFabricFruOnline
    • jnxFabricFruCheck
    • jnxFabricFEBSwitchover
    • jnxFabricHardDiskFailed
    • jnxFabricHardDiskMissing
    • jnxFabricBootFromBackup
  • Traps in the jnxFabricChassisOKTraps group indicate an alarm cleared condition. The root OID for this trap group is 1.3.6.1.4.1.2636.4.20:
    • jnxFabricPowerSupplyOK
    • jnxFabricFanOK
    • jnxFabricTemperatureOK
    • jnxFabricFruOK

  Note: Only SNMPv2 traps are supported on the QFabric system.

For more information, see the Fabric Chassis MIB at:

https://www.juniper.net/techpubs/en_US/junos12.2/topics/reference/mibs/mib-jnx-fabric-chassis.txt