Juniper Networks ERX Hardware 8 - Manual (Page 56)

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