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M320 Field Replaceable Units

 

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.

Before you replace a CB or a Routing Engine, you must take the host subsystem offline.

Table 1 lists the FRUs for the M320 router.

Table 1: Field-Replaceable Units

Hot-removable and hot-insertable FRUs

Hot-pluggable FRUs

Air filters

Craft interface

Flexible PIC Concentrators (FPCs)

Front and rear fan trays

Physical Interface Cards (PICs)

Power supplies

Switch Interface Boards (SIBs)

Backup Control Board (CB)

Backup Routing Engine

Master Control Board (CB) (if nonstop active routing is configured)

Master Routing Engine (if nonstop active routing is configured)

Connector Interface Panel (CIP)

Control Board (CB) (if not redundant)

Routing Engine (if not redundant)

Master Control Board (CB) (if nonstop active routing is not configured)

Master Routing Engine (if nonstop active routing is not configured)