T320 RE-600 Description
The RE-600 Routing Engine boots from the storage media in this order: the PC Card (if present), then the CompactFlash card (if present), then the hard disk. 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. |
Figure 1: T320 Routing Engine 600
The Routing Engine 600 (shown in Figure 1) consists of the following components:
- CPU—Runs JUNOS Software to maintain the router's routing tables and routing protocols. It has a Pentium-class processor.
- DRAM—Provides storage for the routing and forwarding tables and for other Routing Engine processes.
- CompactFlash card—Provides primary storage for software images, configuration files, and microcode. The drive is a fixed compact flask disk and is inaccessible from outside the router.
- Hard disk—Provides secondary storage for log files, memory dumps, and rebooting the system if the CompactFlash card fails.
- PC card slots—Accept a removable PC card, which stores software images for system upgrades.
- LED—Indicates disk activity for the internal IDE interface. It does not necessarily indicate routing-related activity.
- 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 Connector Interface Panel (CIP).
Each Routing Engine has one 10/100-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.
- EEPROM—Stores the serial number of the Routing Engine.
- Reset button—Reboots the Routing Engine when pressed.
