REMX2K-X8-128G CB-RE Description
The Routing Engine is equipped with a 8-Core 2.3 GHz processor, 128 GB memory, and 200 GB SSDs and also supports Secure Boot for enhanced boot security.
REMX2K-X8-128G CB-RE Components
Each Control Board-Routing Engine (CB-RE) consists of the following components:
External clock interface—Allows BITS or GPS clock source input to the centralized timing circuit, or allows centralized timing to be output to BITS or GPS.
1000Base-T Ethernet controller.
Circuits for chassis management and control.
Power circuits for the CB-RE.
Control FPGA—Provides the Peripheral Component Interconnect (PCI) interface to the Routing Engine.
Gigabit Ethernet switch that is connected to the embedded CPU complex on all components.
CPU—Runs Junos OS as a guest OS to maintain the router's routing tables and routing protocols.
I2C bus logic, used for low-level communication with each component.
DRAM—Provides storage for the routing and forwarding tables and for other Routing Engine processes.
Component redundancy circuitry.
USB ports—Provides a removable media interface through which you can install Junos OS and Linux manually. Junos OS supports USB versions, 3.0, 2.0, and 1.1.
Solid-state drives (nonremovable)—Provides secondary storage for log files, memory dumps, and system reboot.
MGMTports provide access to management devices. Each CB-RE has one 10/100/1000-Mbps Ethernet port for connecting to a management network, and two asynchronous serial ports—one for connecting to a console and one for connecting to a modem or other auxiliary device. The two SFP+ ports (
XGE-1) provide support for hardware diagnostics and JCS port testing. The
EXTCLK2ports provide access to external timing distribution.
Use sheilded CAT5e cable for connecting the
EEPROM in RE—Stores the field replacement unit (FRU) details of the RE.
EEPROM in CB—Stores the field replacement unit (FRU) details of the CB.
RESETbutton—Reboots the Routing Engine on the CB-RE when pressed.
ONLINE/OFFLINEbutton—Makes the Routing Engine on the CB-RE online or offline when pressed.
ONLINE/OFFLINEbutton must be pressed for a minimum 4 seconds for the power off or power on to occur.
LEDs—Provide status of the Routing Engine on the CB-RE.
REMX2K-X8-128G CB-RE LEDs
Table 1: REMX2K-X8-128G CB-RE LEDs
Routing Engine is in the process of booting BIOS, and the host OS.
Routing Engine is in the process of booting Junos OS.
Routing Engine is not online or not functioning normally.
Indicates presence of disk activity.
There is no disk activity.
A valid signal is detected on the BITS, GPS or UTI ports.
The link is down due to loss of signal (LOS). Check the cable and verify the external clock source is generating a valid signal.
Routing Engine is powering up.
Routing Engine is not powering up, which indicates failure.
This Routing Engine is the Primary Routing Engine.
REMX2K-X8-128G CB-RE Boot Sequence
The router is shipped with Junos OS and Linux preinstalled on the CB-RE. There are two copies of software:
One copy on a USB flash drive that can be inserted into the slot on the CB-RE faceplate.
One copy each on the two SSDs in the CB-RE.
The SSD is internal and cannot be removed.
The Routing Engine interface boots from the storage media in this order: the USB device, SSD1, SSD2, and then the LAN.