Juniper E Series

x ! Table of Contents
E-series Hardware Guide
Chapter 9 Maintaining E-series Routers 83
Required Tools and Items ..............................................................................83
Storing Modules and Components .................................................................84
Cleaning the System ......................................................................................84
Upgrading NVS Cards on SRP Modules...........................................................84
Upgrading a System That Contains One SRP Module...............................85
Upgrading a System That Contains Two SRP Modules .............................85
Replacing an NVS Card............................................................................86
Upgrading Memory on SRP Modules..............................................................87
Checking the Memory Installed ...............................................................88
Removing SODIMMs ...............................................................................88
Adding New SODIMMs ............................................................................88
Verifying the Upgrade..............................................................................90
Replacing SFPs on GE I/O Modules.................................................................90
Removing SFPs........................................................................................90
Installing SFPs .........................................................................................91
Verifying the Installation..........................................................................93
Replacing Fan Trays.......................................................................................93
Removing the Fan Tray.....................................................................95
Installing the Fan Tray ......................................................................95
Installing a Cable-Management Bracket on ERX-7xx Models ..........................96
Chapter 10
Troubleshooting 99
Diagnosing Problems .....................................................................................99
Initialization Sequence.............................................................................99
Troubleshooting Power Failures ...................................................................100
Understanding Status LEDs to Troubleshoot.................................................100
LED Activity During Booting ..................................................................100
LED Identification..................................................................................100
LED Activity During Booting ..................................................................105
Abnormal LED Activity ..........................................................................105
Redundancy Status................................................................................106
Monitoring Temperatures of Modules ..........................................................107
Resetting Line Modules and SRP Modules ....................................................107
Double-Bit Errors on SRP Modules ...............................................................108
Detecting Double-Bit Errors ...................................................................108
Fixing Double-Bit Errors ........................................................................108
Part 2 System and Module Specifications
Chapter 11 System Specifications 111
ERX-14xx Models Specifications ..................................................................111
ERX-7xx Models Specifications ....................................................................113
ERX-310 Router Specifications.....................................................................115