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ERX Modules
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.
SRP Module
Switch route processor (SRP) modules perform system management, routing table
calculations and maintenance, forwarding table computations, statistics processing,
Chapter 1: ERX Overview
9
ERX Modules
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Table of Contents
Troubleshooting
