Monitoring the Host Subsystem

You monitor and maintain the host subsystem (the Routing Engine and the Control Board) on the routing platform, which provides the routing and system management functions for the router. (See Table 68.)

Table 68: Checklist for Monitoring the Host Subsystem

Monitor Host Subsystem Tasks	Command or Action
Understanding the Host Subsystem M320 and T320 Router and T640 Routing Node Routing Engines M320 and T320 Router and T640 Routing Node Control Boards Host Subsystem Location
Checking the Host Subsystem Status	show chassis craft-interface Look at the LEDs on the craft interface or the component faceplate.
Checking the Routing Engine Status	show chassis routing-engine show chassis environment routing-engine
Checking the Control Board Status	show chassis environment cb

This chapter provides basic information about monitoring the host subsystem components: the Routing Engine and the Control Board. For more detailed information about monitoring the Routing Engine, see Monitoring the Routing Engine. For more detailed information about monitoring the Control Board, see Monitoring the Control Board.