Juniper-networks J4350 Manual de usuario descargar pdf (Pagina 47)

Chapter 3

Physical Int

erface Modules Overview

A Physical Interface Module (PIM) is a network interface card that is installed on a

J-series Services Router, to provide physical connections to a LAN or a WAN. The

PIM receive

s inc oming packets from the network and transmits outgoing packets

to the network. Each PIM is equipped with a dedicated network processor that

forwards incoming data packets to the Routing Engin e, and receives outgoing data

packets fro

m the Routing En gin e. During th is process, the PIM performs framing

and line -speed signaling for its m ed ium type.

WARNING: PI

Ms are not hot-swappable. You must power off the Services Router

before removing or inserting a PIM.

For a comple

te list of supported PIMs, see Table 14.

For informa

tion about network interfaces, see the interfaces overview and

configuration information in the J-series Services Router Basic LAN and WAN Access

Configuration Guide.

For a J-series S ervices Router PIM compatibility matrix a nd datasheets, go to

http://ww

w.juniper.net/products/jseries/

This chapt

er contains the following topics.

PIM Terms on page 27

Field-Replaceable PIMs o n p age 29

PIM Terms

To underst

and th e PIMs, become familiar with the terms defined in Table 13.

Table 13:

PIM Terms

Ter m Definition

ADSL 2/2+ Annex A ITU-T Standard G.992.1 that defines how ADSL works over plain old telephone

service (POTS) lines.

PIM Ter ms 27

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 283 284

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Juniper-networks J4350 Manual de usuario Pagina 47