MX5, MX10, MX40, and MX80 Chassis

MX5, MX10, MX40, and MX80 Chassis Description

The router chassis is a rigid sheet metal structure that houses all the other router components (see Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, and Figure 6). The chassis measures 3.5 in. (8.9 cm) high, 17.5 in. (44.5 cm) wide, and 23.46 in. (59.6 cm) deep. The chassis installs in standard 600-mm deep (or larger) enclosed cabinets, 19-in. equipment racks, or telco open-frame racks.

Figure 1: Front View of the MX5 Router

Figure 2: Front View of the MX10 Router

Figure 3: Front View of the MX40 Router

Figure 4: Front View of the MX80 Router (Fixed Chassis)

Figure 5: Front View of the MX80 Router (Modular Chassis)

Figure 6: Rear View of the MX5, MX10, MX40, and MX80 Routers

MX5, MX10, MX40, and MX80 Baseboard Description

Baseboard Components

• Junos Trio chipset—Manages packet data memory, queuing systems, and performs packet lookup and encapsulation.

• MIC connectors for both built-in and replaceable MICs including a WAN interface for the built-in 10-Gigabit Ethernet MIC.

• Intake and exhaust temperature sensors.

• Circuits for chassis management and control.

• Power circuits for the system components and Ethernet interfaces.

• Routing Engine processor, which includes a 1.33-GHz CPU, and 2 GB of SDRAM.

• 2 4-GB NAND flash storage devices.

• Packet Forwarding Engine processor, which includes a 1-GHz CPU, a system controller, and 1 GB of SDRAM. Connects to the Routing Engine through a Gigabit Ethernet link.

• Clock logic.

MX5, MX10, MX40, and MX80 Cable Management Bracket Description

The cable management bracket (see Figure 7) consists of plastic dividers and installs on the left side of the chassis. The cable management bracket allows you to route the cables outside the router and away from the MICs.

Figure 7: Cable Management Bracket for the MX5, MX10, MX40, and MX80 Routers

MX5, MX10, MX40, and MX80 Front Panel Description

The front panel is located on the front of the router and allows you to view status and troubleshooting information at a glance. The front panel contains LEDs for the router components, online/offline and reset buttons, auxiliary and console ports, clocking ports, and ports for the 10-Gigabit Ethernet MIC.

Figure 8: Front Panel on the Fixed MX80 Router

Figure 9: Front Panel on the Modular MX5, MX10, MX40, and MX80 Routers

Front Panel Components

• Interface ports—The AUX, CONSOLE, and ETHERNET ports provide access to management devices. Each Routing Engine has one 1-Gbps 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.

• Two ports for primary and secondary BITS clock input—Available on the modular MX80 chassis.

• One fixed 10-Gigabit Ethernet MIC with four ports for uplink connections. For more information see MX5, MX10, MX40, and MX80 Modular Interface Card Description.

• USB port—Provides a removable media interface through which you can install the Junos OS manually. (See Figure 10.) Junos OS supports USB version 1.0.

• Router online/offline button—Takes the router online or offline when pressed.

• Reset button—Reboots the Routing Engine when pressed.

• LEDs—Indicate component and system status and troubleshooting information at a glance.

Figure 10: USB Memory Device in an MX5, MX10, MX40, and MX80 Router

Alarm LEDs on the MX5, MX10, MX40, and MX80 Front Panel

Two alarm LEDs are located at the left of the front panel. The circular red LED lights to indicate a critical condition that can result in a system shutdown. The triangular yellow LED lights to indicate a less severe condition that requires monitoring or maintenance. Both LEDs can be lit simultaneously.

Table 1 describes the alarm LEDs in more detail.

Table 1: Alarm LEDs on the MX5, MX10, MX40, and MX80 Front Panel

Shape	Color	State	Description
	Red	On steadily	Critical alarm LED—Indicates a critical condition that can cause the router to stop functioning. Possible causes include component removal, failure, or overheating.
	Yellow	On steadily	Warning alarm LED—Indicates a serious but nonfatal error condition, such as a maintenance alert or a significant increase in component temperature.

Component LEDs on the MX5, MX10, MX40, and MX80 Front Panel

• Link LEDs on the Front Panel

• Routing Engine LED on the Front Panel

• System LED on the Front Panel

Link LEDs on the Front Panel

The front panel has a 10-Gigabit Ethernet MIC with four ports for uplink connections. Each port has one LINK LED located to the right of the port. Table 2 describes the link LEDs in more detail.

Routing Engine LED on the Front Panel

One LED on the left side of the front panel indicates the status of the Routing Engine. The LED is located below the RE label. Table 3 describes the Routing Engine LED in more detail.

System LED on the Front Panel

One LED on the left side of the front panel indicates the status of the router. The LED is located below the SYS OK label. Table 4 describes the system LED in more detail.