Hardware Requirements for JUNOS Software Release 9.4 for J-series Services Routers

• Power and Heat Dissipation Requirements for J Series PIMs
• Supported Third-Party Hardware
• J Series CompactFlash and Memory Requirements

Power and Heat Dissipation Requirements for J Series PIMs

On J Series Services Routers, the system monitors the PIMs and verifies that the PIMs fall within the power and heat dissipation capacity of the chassis. If power management is enabled and the capacity is exceeded, the system prevents one or more of the PIMs from becoming active.

Caution: Disabling power management can result in hardware damage if you overload the chassis capacities.

You can also use CLI commands to choose which PIMs are disabled. For details about calculating the power and heat dissipation capacity of each PIM and troubleshooting procedures, see the J Series Services Routers Hardware Guide.

Supported Third-Party Hardware

The following third-party hardware is supported for use with J-series Services Routers running JUNOS software.

USB Modem

We recommend using a Multi-Tech MultiModem MT5634ZBA-USB-V92 USB modem with J-series Services Routers.

Storage Devices

The USB slots on J-series Services Routers accept a USB storage device or USB storage device adapter with a CompactFlash card installed, as defined in the CompactFlash Specification published by the CompactFlash Association. When the USB device is installed and configured, it automatically acts as a secondary boot device if the primary CompactFlash card fails on startup. Depending on the size of the USB storage device, you can also configure it to receive any core files generated during a router failure. The USB device must have a storage capacity of at least 256 MB.

Table 4 lists the USB and CompactFlash storage devices supported for use with the J-series Services Routers.

Table 4: Supported Storage Devices on the J-series Services Routers

J Series CompactFlash and Memory Requirements

Table 5 lists the CompactFlash Card and DRAM requirements for J Series Services Routers.

Table 5: J Series CompactFlash card and DRAM Requirements

Related Topics

• Features in JUNOS Software Release 9.4 for J-series Services Routers
• Chassis Cluster Features Not Supported in JUNOS Software Release 9.4 for J-series Services Routers
• Changes in Default Behavior and Syntax
• Issues in JUNOS Software Release 9.4 for J-series Services Routers
• Upgrade and Downgrade Instructions for JUNOS Software Release 9.4 for J-series Services Routers
• Erratum