M40e Field-Replaceable Units (FRUs)
Field-replaceable units (FRUs) are router components that can be replaced at the customer site. Replacing most FRUs requires minimal router downtime. The router uses the following types of FRUs:
- Hot-removable and hot-insertable FRUs—You can remove and replace these components without powering off the router or disrupting the routing functions.
- Hot-pluggable FRUs—You can remove and replace these components without powering down the router, but the routing functions of the system are interrupted when the component is removed.
- FRUs that require powering off the router—You must power off the router before removing these components.
Table 1 lists the FRUs for the M40e router.
Table 1: M40e Field-Replaceable Units
Hot-Removable and Hot-Insertable FRUs | Hot-Pluggable FRUs | FRUs That Require Powering Down the Router |
|---|---|---|
Air filter Fan tray (located behind the cable management system) Flexible PIC Concentrator (FPC) Physical Interface Card (PIC) Power supply (AC or DC) Small form-factor pluggable (SFP) | Miscellaneous Control Subsystem (MCS) Packet Forwarding Engine Clock Generator (PCG) Routing Engine Switching and Forwarding Module (SFM) | Circuit breaker box (on DC-powered router only) Connector Interface Panel (CIP) |
