M10I Routing Engine 400 Description - Juniper M10i Hardware Manual

M10i Multiservice Edge Router Hardware Guide

M10i Routing Engine 400 Description

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The Routing Engine 400 has the following major components:
CPU—Runs Junos OS to maintain the router's routing tables and routing protocols. It
has a Pentium-class processor.
SDRAM—Provides storage for the routing and forwarding tables and for other Routing
Engine processes.
CompactFlash card—This drive is optional. If installed, it provides primary storage. It
holds software images, configuration files, and microcode.
Hard disk—If no CompactFlash card is installed, provides primary storage for software
images, configuration files, and microcode. If a CompactFlash card is installed, the
hard disk provides secondary storage for log files and memory dumps, and can reboot
the system if the CompactFlash card fails.
I2C/EEPROM—Stores the serial number of the Routing Engine.
The faceplate of the Routing Engine 400 contains the following:
PC card slot—Accepts a removable PC card, which stores software images for system
upgrades.
Interfaces for out-of-band management access—Provide information about
Routing Engine status to devices (console, laptop, or terminal server) that can be
attached to access ports located on the Routing Engine.
Reset button—Reboots the Routing Engine when pressed.
Offline button—Powers down the Routing Engine when pressed.
Thumbscrews—Secure the Routing Engine in the chassis.
Four LEDs—A green LED labeled
, and a green LED labeled
FAIL
The disk from which the router boots is called the primary boot device, and the other disk
is the alternate boot device.
The boot sequence for the router:
PC Card
CompactFlash card
Hard disk
NOTE: If the router boots from an alternate boot device, a yellow alarm lights
the LED on the router's craft interface.
, a blue LED labeled
HDD
indicate Routing Engine status.
ONLINE
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, a red LED labeled
MASTER