MX10016 Routing and Control Board

Routing and Control Board Functions

The Routing and Control Board (RCB) integrates the control plane and Routing Engine functions into a single management unit. Each RCB provides all the functions needed to manage the operation of the modular chassis:

• System control functions such as environmental monitoring

• Routing Layer 2 and Layer 3 protocols

• Communication to all components such as line cards, Switch Fabric Boards (SFBs), and power and cooling

• Transparent clocking

• Alarm and logging functions

Routing and Control Board Components

Each Routing and Control Board (RCB) consists of the following internal components:

• CPU—Runs Junos OS to maintain the routing tables and routing protocols.

• EEPROM—Stores the serial number of the Routing Engine.

• DRAM—Provides storage for the routing and forwarding tables and for other Routing Engine processes.

• One 10-Gigabit Ethernet— Connects the Routing Engine and Switch Fabric Board.

• One USB port—Provides a removable media interface through which you can install Junos OS manually. Junos OS supports USB versions 3.0, 2.0, and 1.1.

• Management ports—Two ports, one copper (RJ-45) port and one SFP port, provide access to management devices. Use only one of the two management ports at a time.

  Use an RJ-45 connector for the copper port.

  Use a fiber optic connector for the SFP port.

  Do not use copper SFP or SFP-T modules in the SFP port as they are not supported.

• RESET button—When pressed, reboots the RCB as detailed below:

  • When pressed for less than 5 seconds for diagnostic purposes, the RCB does not reset. The press event is logged in the RCB FPGA register.

  • When pressed for greater than 5 seconds but less than 10 seconds, the RCB reboots and the reset-reason logs the button press event.

  • When pressed for greater than 10 seconds, the RCB reboots with an option for BIOS recovery.

• LEDs—Provide status of the Routing Engine.

• Online/Offline Button—When the RCB is online and if the button is pressed for more than 4 seconds, the RCB goes offline. When the RCB is offline and if the button is pressed more than 4 seconds, the RCB starts booting.

For specific information about Routing Engine components (for example, the amount of DRAM), issue the show vmhost hardware command.

Figure 2: Routing and Control Board Faceplate

1 — Handles	7 — Reset button
2 — BITS-0 clock port	8 — Online/Offline button
3 — GPS clock ports	9 — USB port
4 — XGE-0 and XGE-1 Juniper Control System (JCS) ports	10 — Management (MGMT) ports
5 — ToD—Time-of-day (TOD) port	11 — Console (CONSOLE) port
6 — BITS-1 clock port