Re-S-X6-64G Routing Engine Boot Sequence - Juniper MX480 Hardware Manual

MX480 Universal Routing Platform Hardware Guide
See Also
68
Each RE-S-X6-64G Routing Engine (shown in
following 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 interface between the Routing Engine and Switch Control
Board.
Two 50-GB slim solid-state drives—
storage for software images, configuration files, microcode, log files, and memory
dumps. The Routing Engine reboots from SSD2 when boot from primary SSD fails.
Two USB ports ( and
USB1
you can install Junos OS manually. The Junos OS supports USB versions 3.0, 2.0, and
1.1.
Interface ports—The AUX
devices. Each Routing Engine 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.
button—Reboots the Routing Engine when pressed.
RESET
button—Brings the Routing Engine online or takes it offline when
ONLINE/OFFLINE
pressed.
NOTE: The ONLINE/OFFLINE
seconds for the power off or power on to occur.
Extractor clips—Control the locking system that secures the Routing Engine.
LEDs—"RE-S-X6-64G Routing Engine LEDs" on page 69
these LEDs.
NOTE: For specific information about Routing Engine components (for
example, the amount of DRAM), issue the

RE-S-X6-64G Routing Engine Boot Sequence

Booting in a RE-S-X6-64G Routing Engine follows this sequence—the USB device, SSD1,
SSD2, LAN. SSD1 is the primary boot device. The boot sequence is tried twice for SSD1
and SSD2.
Upgrading to the RE-S-X6-64G Routing Engine in a Redundant Host Subsystem on
page 255
Figure 25 on page
(primary) and
SSD1
)—Provide a removable media interface through which
USB2
, CONSOLE , and MGMT provide access to management
button must be pressed for a minimum of 4
show vmhost hardware
67) consists of the
(secondary)—Provide
SSD2
describes the functions of
command.
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