Re-S-1800 Routing Engine Description; Routing Engine Boot Sequence - Juniper MX240 Hardware Manual

yellow for 100-Mbps and when the LED is dark, it indicates 10-Mbps speed. The LED on the right
indicates activity—flashing green when packets are passing through the port.

Routing Engine Boot Sequence

The Routing Engine boots from the storage media in this order: the USB device (if present), then the
CompactFlash card, then the hard disk, then the LAN. The disk from which the router boots is called the
primary boot device, and the other disk is the alternate boot device.
NOTE: If the router boots from an alternate boot device, a yellow alarm lights the LED on the
router's craft interface.
Booting in a RE-S-X6-64G and in a RE-S-X6-64G-LT Routing Engine follows this sequence—the USB
device, SSD1, SSD2, and LAN. SSD1 is the primary boot device. Boot sequence is tried twice for SSD1
and SSD2.
SEE ALSO
Removing an MX240 Routing Engine | 288
Installing an MX240 Routing Engine | 290
MX240 Routing Engine Serial Number Label | 454

RE-S-1800 Routing Engine Description

IN THIS SECTION
RE-S-1800 Routing Engine Components | 74
RE-S-1800 Routing Engine LEDs | 75
RE-S-1800 Routing Engine Boot Sequence | 75
Figure 26 on page 74 shows RE-S-1800 routing engine.
73