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Exporting Packet Forwarding Engine Traffic Sensor Data

Starting with Junos OS Release 17.4R1, you can export Packet Forwarding Engine traffic statistics. Use the Junos Telemetry for Juniper Networks® MX Series Universal Routing Platforms and Juniper Networks PTX Series Routers. Use both UDP and gRPC.

This sensor tracks reporting of Packet Forwarding Engine statistics counters and provides visibility into Packet Forwarding Engine error and drop statistics. The resource name for the sensor is /junos/system/linecard/packet/usage/. The OpenConfig paths report data specific to CPU, NPU and center chip (CC). The following paths are supported:

  • /components/component[name='FPCid:NPUid']/properties/property[name='counter']/state/value, where FPC refers to the Flexible PIC Concentrator and NPU refers to the network processing unit (packet forwarding engine). A sample resource path is /components/component[name='FPC0:NPU3']/properties/property[name='ts-output-pps']/state/value where hwds-data-error is the counter for Hardware Discards: Data Error.

  • /components/component[name='FPCid:CCid’]/properties/property[name='counter’]/state/value , where FPC refers to the Flexible PIC Concentrator and CC refers to the center chip. A sample resource path is /components/component[name='FPC0:CC1']/properties/property[name='lpbk-packets’']/state/value where lpbk-packets is the count of Forward packets specific to FPC0, center chip 1.

  • /components/component[name='FPCid’]/properties/property[name='counter’]/state/value , where FPC refers to the Flexible PIC Concentrator. A sample resource path is /components/component[name='FPC0']/properties/property[name='lts-input-packets’']/state/value where lts-input-packets is the CPU counter Local packets input.

To provision the sensor to export data through gRPC, use the telemetrySubscribe RPC to specify telemetry parameters. For streaming through UDP, all parameters are configured at the [edit services analytics] hierarchy level.

The following is a map of counters to output fields in the show pfe statistics traffic command or show pfe statistics traffic detail command (supported only on MX Series routers).