Erx Modules; Srp Module - Juniper E SERIES BROADBAND SERVICES ROUTERS 11.3.X - ERX HARDWARE GUIDE REV 26-9-2010 Hardware Manual

ERX Modules

SRP Module

Copyright © 2010, Juniper Networks, Inc.
Each system supports an SRP module and a selection of line modules. You can use any
line module for access or uplink. Access line modules receive traffic from low-speed
circuits, and the system routes the traffic onto higher-speed uplink line modules and then
to the core of the network.
Each module connects to a corresponding I/O module via a passive midplane. See Figure
8 on page 9.
The front panel of each module contains a collection of status LEDs (light-emitting
diodes). For information about how to interpret the LEDs, see "Troubleshooting" on
page 95.
Figure 8: Modules in ERX14xx Models
NOTE: Some line modules require a minimum amount of memory to be used
with JunosE Release 5.3.0 or a higher-numbered release. See the ERX Module
Guide for line module specifications.
Switch route processor (SRP) modules perform system management, routing table
calculations and maintenance, forwarding table computations, statistics processing,
configuration storage, and other control plane functions. Each SRP module is a
Chapter 1: ERX Overview
9