A → Line cards

Provide the physicalinterfaces for network connectivity.

B → Route processor cards

Manage routing functions and system control.

C → Transceivers

Installed in the ports of line cards for optical/electrical signal transmission.

D → Power supplies

Provide power to themodular system and are hot-swappable.

Cisco'sNCS 5500 Seriesis designed for service provider and data center deployments. The FLDTEC course outlines the layout of FRUs in modular platforms like this one:

A – Line Cards: Located in the upper slots, these modules handle the bulk of switching and forwarding functions.

B – Route Processor Cards (RP Cards): Positioned centrally, these provide management and control plane services for the router.

C – Transceivers: Installed into the line cards, transceivers provide physical connectivity through optical or copper interfaces.

D – Power Supplies: Located in the bottom rear section, these modules provide redundant and hot-swappable power to the chassis.

Recognizing each FRU visually and functionally is critical when performingRMA procedures,component diagnostics, orhardware upgradesin the field.