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Configuring Routers to Send JTI Telemetry Data and RPM Statistics to the Data Collectors

Junos Telemetry Interface (JTI) sensors generate data from the PFE (LSP traffic data, logical and physical interface traffic data), and will only send probes through the data plane. So, in addition to connecting the routing engine to the management network, a data port must be connected to the collector on one of your devices. The rest of the devices in the network can use that interface to reach the collector.


You must use Junos OS Release 15.1F6 or later for NorthStar analytics.

To configure the routers, use the following procedure:

  1. Configure the devices for telemetry data. On each device, the following configuration is required. The device needs to be set to enhanced-ip mode, which might require a full reboot.
    • For NorthStar to correctly process the JTI telemetry packets from MPC10 line cards on the JunOS routers, ensure that you:

      • Configure remote-port in [services analytics streaming-server server] as 3000

      • Add set services analytics export-profile profile-name payload-size 1400

    • If you are configuring for NorthStar integration with HealthBot, use default remote-port 4000 and set the remote-address to the HealthBot server IP address.

    In this configuration, the remote address is the IP address of the collector (reachable though a data port). The local address should be the loopback, or router-id, whichever is configured on the device profile to identify the device.

  2. NorthStar supports bandwidth sizing and container LSPs for SR-TE LSPs. Junos OS release 19.2R1 or later is required for this functionality. There is additional configuration required on the router to enable collection of segment routing data. For example:
  3. Real-time performance monitoring (RPM) enables you to monitor network performance in real time and to assess and analyze network efficiency. To achieve this, RPM exchanges a set of probes with other IP hosts in the network for monitoring and network tracking purposes.

    Configure RPM probes to measure the interface delays. The following example shows the configuration of probes out of interface ge-0/1/1.0 to the remote address This remote address should be the IP address of the node at the other end of the link.


    The test name must match the interface being measured (test ge-0/1/1.0, in this example).

  4. Configure the syslog host using the following commands:

    IMPORTANT: To prevent the population of duplicate delay data to the PCS, do not perform this step if you are configuring for integration with HealthBot.

  5. RPM probes do not yet generate telemetry data, but you can use the rpm-log.slax script to push the results. The script is located in /opt/northstar/data/logstash/utils/junoscripts. Install the script to /var/db/scripts/event on the router.

    Use a text editor such as vi to make one addition to the rpm-log.slax script as follows (the bundled script will be updated in a future release):

    Enable the script by adding it to the event/scripts configuration:


    IMPORTANT: To prevent the population of duplicate delay data to the PCS, do not perform this step if you are configuring for integration with HealthBot.

    The text of the rpm-log.slax script follows. Comments are enclosed in /* */.