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    M10i Router Components

    Table 1 lists the major M10i router components and characteristics.

    Table 1: M10i Router Major Hardware Components

    Component

    Quantity

    Function

    Redundant

    Field-
    Replaceable

    Offline Button

    CFEB

    1 or 2

    Provides route lookup, filtering, and switching on incoming data packets; directs outbound packets to the appropriate FPC for transmission to the network

    Yes

    Hot-pluggable

    Yes

    Cooling system

    2 fan trays (8 fans)

    Cools router components

    Yes

    Hot-removable,
    hot-insertable

    FPC

    2

    House the PICs that connect the router to network media

    Built-in

    HCM

    2

    Works with a companion Routing Engine to provide control and monitoring functions for router components; displays alarm status; takes PICs online and offline

     

    Hot-pluggable

    PIC

    1–8

    Provides interfaces to various network media; receives incoming packets from the network and transmits outgoing packets to the network, performing framing and line-speed signaling for their media type; encapsulates outgoing packets received from the FPCs before transmitting them.

    Hot-removable, hot-insertable

    Yes
    (On the HCM)

    Power supply

    1–4
    AC or DC

    Distributes needed voltages to components

    Yes

    Hot-removable, hot-insertable

    Yes

    SFP

     

    Fiber-optic transceivers that connect to PICs

    Hot-removable,
    hot-insertable

    Routing Engine

    1 or 2

    Runs Junos OS ; maintains the routing tables, manages the routing protocols used on the router, controls the router’s interfaces, controls some chassis components, and provides the interface for system management and user access to the router

    Yes

    Hot-pluggable

    Yes

    Field-replaceable units (FRUs) are router components that can be replaced at the customer site. Replacing FRUs requires minimal router downtime. There are three types of FRUs:

    • Hot-removable and hot-insertable—You can remove and replace the component without powering down the router or interrupting the routing functions.
    • Hot-pluggable—You can remove the component without powering down the router, but routing functions are interrupted until the replacement is installed.
    • Requires router shutdown—You must power down the router before removing the component.
     

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    Published: 2012-08-20