Remx2K-X8-128G Cb-Re Components - Juniper MX2010 Hardware Manual

REMX2K-X8-128G CB-RE Components

Figure 24: REMX2K-X8-128G CB-RE Components
REMX2K-X8-128G
AUX CONSOLE MGMT
ONLINE
DISK1
DISK2
REMX2K-X8-128G
1 2 3 4
1 AUX port
—
2 CONSOLE port
—
3 MGMT port
—
4 ONLINE/OFFLINE button
—
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.
Interface ports—The AUX, CONSOLE, and MGMT ports 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-0 and XGE-1) provide support for hardware diagnostics and
JCS port testing. The EXTCLK1 and EXTCLK2 ports provide access to external timing distribution.
1 2
XGE-0
5 6
LINK
BITS
GPS
UTI
XGE-1 EXTCLK-0 EXTCLK-1 OK/FAIL
7 8
5 USB ports
—
6 RESET button
—
7 XGE-0 and XGE-1 ports
—
8 EXTCLK0 and EXTCLK1 ports
—
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