MX2000 Host Subsystem CB-RE Description
The CB-RE is a combined Routing Engine and Control Board in one unit. It performs the following functions:
Maintains the routing tables
Manages the routing protocols used on the router
Controls the router interfaces
Controls some chassis components
Provides the interface for system management and user access to the route
The CB-RE is hot-pluggable and installs into the front of the MX2000 chassis in vertical slots labeled 0 and 1. A USB port on the CB-RE accepts a USB memory device that allows you to load Junos OS. You can install one or two CB-REs in the router. If two CB-REs are installed, one functions as the primary and the other acts as the backup. If the primary CB-RE fails or is removed and the backup is configured appropriately, the backup takes over as the primary. If no CB-RE is installed in a slot, install a blank panel in the slot.
A minimum of one CB-RE must be installed in either slot 0 or slot 1 at all times.
If one CB-REs fails, do not remove the failed CB-RE until you have a replacement or blank panel to install.
The MX2000 line of routers supports the following CB-RE’s:
RE-MX2000-1800x4 CB-RE
REMX2K-X8-64G-LT CB-RE
REMX2K-X8-64G-LT CB-RE has limited encryption support.