Juniper Networks J2350 manual PIM Overview, PIM Terms

Chapter 3

PIM Overview

J-series Services Routers accept Physical Interface Modules (PIMs) in the slots on the front of the chassis.

CAUTION: PIMs are not hot-swappable. You must power off the Services Router before removing or inserting a PIM module. Ensure that the PIMs are installed in the router chassis before booting up the system.

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 receives incoming 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 Engine and receives outgoing data packets from the Routing Engine. During this process, the PIM performs framing and line-speed signaling for its medium type.

For a complete list of supported PIMs, see “Field-Replaceable PIMs” on page 38.

A single WXC Integrated Services Module (also called an ISM 200) can be installed like a PIM in J2350, J4350, and J6350 routers to provide WAN acceleration. For more information, see the WXC Integrated Services Module Installation and Configuration Guide.

For J-series Services Router PIM compatibility matrix and datasheets, go to

http://www.juniper.net/products/jseries/.

For information about network interfaces, and for configuration instructions, see the JUNOS Software Interfaces and Routing Configuration Guide.

This chapter contains the following topics:

■PIM Terms on page 35

■Field-Replaceable PIMs on page 38

PIM Terms

To understand PIM, become familiar with the terms defined in Table 18 on page 36.

PIM Terms ■ 35