Junos Telemetry

Export packet capture statistics to external collectors using Junos telemetry (QFX5130-32CD, QFX5130E-32CD, QFX5130-48C, QFX5700, QFX5230-64CD, QFX5240-64OD, and QFX5240-64QD)—The packet capture feature records the first configured number of host-bound packets on each physical interface and exports them to an external collector over the Junos telemetry infrastructure. You can use this data to debug and fix network or performance issues. Subscribe to the packet-capture sensor at /junos/system/linecard/packet-capture. The device captures 50 ingress packets when an interface transitions from the DOWN state to the UP state. The data is encoded in Google Protocol Buffer format and streamed over gRPC with SSL encryption. To enable packet capture, configure:

edit system packet-forwarding-options packet-capture packet-capture-enable

Use the show agent sensors command to view the packet capture sensor information.

For more information, see Junos YANG Data Model Explorer.

Stream telemetry data in gNMI-based message format over UDP (ACX7100-32C, ACX7100-48L, ACX7332, ACX7348, ACX7509, ACX7024, ACX7024X, PTX10001-36MR, PTX10002-36QDD, PTX10003, PTX10004, PTX10008, PTX10016, PTX12008, QFX5130-32CD, QFX5130E-32CD, QFX5130-48C, QFX5130-48CM, QFX5700, QFX5700E, QFX5220, QFX5230-64CD, QFX5240-64OD, and QFX5240-64QD)—Junos OS Evolved uses a dial-out mechanism to send telemetry data to a collector over UDP . The message format is defined in the jnx_gnmi_over_udp.proto file. Only STREAM mode with SAMPLE as subscription mode is supported. The message contains full key name and value pair information so the collector does not require data models for processing or consuming the telemetry data.

[See Streaming Telemetry Data Over UDP, Establish a Dial-out Telemetry Connection, streaming-server (Junos Telemetry Interface), export-profile (Junos Telemetry Interface), show services analytics dialout statistics, and Junos YANG Data Model Explorer.]