JTI sensor support for standby Routing Engine statistics

Junos OS  provides Junos telemetry interface (JTI) sensor support for standby routing Engine statistics using remote procedure call (gRPC) services. Use this feature to better track the state of software components running on a standby Routing Engine. Statistics exported to an outside collector through the following sensors (primarily under subscriber management) provide a more complete view of the system health and resiliency state:

• Chassis role (backup or primary) sensor /junos/system/subscriber-management/chassis and /junos/system/subscriber-management/chassis[chassis-index=chassis-index]
• Routing Engine status and GRES notification sensor /junos/system/subscriber-management/chassis/ routing-engines/routing-engine and /junos/system/subscriber-management/chassis/routing-engines/routing-engine[re-index=RoutingEngineIndex]
• Subscriber management sensor /junos/system/subscriber-management/chassis/routing-engines/ process-status/subscriber-management-processes/subscriber-management-process and /junos/system/subscriber-management/chassis/routing-engines/process-status/subscriber-management-processes/subscriber-management-process[pid=ProcessIdentifier]
• Per Routing Engine DHCP binding statistics for server or relay sensor /junos/system/ subscriber-management/chassis/routing-engines/routing-engine/dhcp-bindings/  dhcp-element[dhcp-type-name=RelayOrServer/v4] and /junos/system/subscriber-management/ chassis/routing-engines/routing-engine/dhcp-bindings/dhcp-element[dhcp-type-name=RelayOrServer/ v6]
• Virtual Chassis port counter sensor /junos/system/subscriber-management/chassis/ virtual-chassis-ports/virtual-chassis-port and /junos/system/subscriber-management/chassis/ virtual-chassis-ports/virtual-chassis-port[vcp-interface-name=vcp-interface-port-string].