Juniper Networks manual Combinations of Line Modules In Slot Groups, OC48 Line Modules

ERX 8.0.x Hardware Guide

Combinations of Line Modules In Slot Groups

For information about combinations of line modules in slot groups, see JUNOSe

System Basics Configuration Guide, Chapter 6, Managing Modules.

OC48 Line Modules

The ERX-1440 router with the SRP-40G+ SRP module supports OC48 line modules. Other ERX routers do not support OC48 line modules.

An OC48 line module spans two slots in an ERX-1440 router. You can install this line module only in slots 2–3 and slots 4–5. Other slots in the system do not support this line module.

The corresponding OC48 Frame APS I/O module spans only one slot. Install the I/O module in the lower of the slots (either slot 2 or slot 4) that the line module spans.

GE-2 Line Modules

The ERX-1440 router with the SRP-40G+ SRP module supports GE-2 line modules in all slots; however, full bandwidth is delivered only when the line module is in slot 2 or slot 4. The line module can be used with other SRP modules, but maximum line performance will not be achieved.

The ERX-310 router with the SRP-SE10G SRP module supports GE-2 line modules in both slots (1 and 2). Maximum line performance is achieved in either slot.

Other ERX routers do not support GE-2 line modules.

Managing Modules Using the Software

For information about software procedures associated with replacing and managing modules, see JUNOSe System Basics Configuration Guide, Chapter 6, Managing Modules.

Hot-Swapping Modules

All ERX routers support hot-swapping of modules. Hot-swapping enables you to add or remove a module without powering down the system.

Protecting Modules and Slots

Each ERX chassis has an ESD (electrostatic discharge) grounding jack. See Table 4 for locations. To prevent damage from electrostatic discharge, connect an antistatic wrist strap to the jack when handling components.

38 Overview