Name: Juniper M7i
Brand: Juniper
Rating: 5 (1 reviews)

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CHAPTER 1

System Overview and Architecture

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M7i Router Description on page 3

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M7i Component Redundancy on page 4

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System Architecture Overview on page 4

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M7i and M10i Packet Forwarding Engine Architecture on page 5

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Routing Engine Architecture on page 6

M7i Router Description

The M7i Multiservice Edge Router is a complete routing system that provides ATM,

channelized, Ethernet, IP services, and SONET/SDH interfaces for large networks and

network applications, such as those supported by Internet service providers (ISPs).

The router accommodates up to four Physical Interface Cards (PICs). In addition to the

PICs, the Fixed Interface Card (FIC) provides two Fast Ethernet ports or one Gigabit

Ethernet port, depending on your configuration. The built-in tunnel interface on the

Compact Forwarding Engine Board (CFEB) and Enhanced Compact Forwarding Engine

Board (CFEB-E) provides tunneling services. The optional Adaptive Services Module

(ASM) on the CFEB and CFEB-E, and the optional MultiServices Module (MSM) on the

CFEB-E allow one or more services to be configured on this interface.

The router architecture cleanly separates control operations from packet forwarding

operations, which helps to eliminate processing and traffic bottlenecks. Control operations

in the router are performed by the Routing Engine, which runs Junos OS to handle routing

protocols, traffic engineering, policy, policing, monitoring, and configuration management.

Application-specific integrated circuits (ASICs), a definitive part of the router design,

enable the router to forward data at the high speeds demanded by current network

media. Forwarding operations in the router are performed by the Packet Forwarding

Engine, which consists of hardware, including ASICs, designed by Juniper Networks. The

Packet Forwarding Engine can forward up to 16 million packets per second (Mpps) for

all packet sizes. The aggregate throughput is 4 gigabits per second (Gbps), full duplex,

for the FPC with 4 PIC slots. The fixed interface card (FIC) has a maximum throughput

of 1 Gbps full duplex. Inserting a combination of PICs with an aggregate higher than the

maximum throughput of the FPC is supported, but constitutes oversubscription of the

FPC.

Juniper M7i Hardware Guide

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