Routing Engine and chassis statistics sensors in GNFs

Junos telemetry interface (JTI) expands the sensor support for guest network functions (GNFs) to collect Routing Engine and chassis statistics. JTI already supports CPU sensors and line-card sensors (with some limitations) in GNFs. When the sensors cannot export statistics from a GNF, they export them from the base system (BSYS). When node sliced, the MX Series router functions as the BSYS. Node slicing creates additional VMs that function as GNFs. The BSYS owns all the hardware components such as chassis, linecards, and switch fabric. GNFs own and implement logical functions and maintain related states. Because of this distribution of ownership of hardware components and functions between BSYS and GNFs, the GNFs do not have access to all the information that is available to a standalone router or the BSYS on a node-sliced router. JTI can export complete statistical information from a node-sliced router only if you subscribe to the BSYS and the GNF with the required sensor path.GNFs do not have access to all information that is available to a standalone router or BSYS on a node-sliced router. In order to export complete statistical information from a node-sliced router using JTI, one has to subscribe to both the BSYS and the GNF with the required sensor path.