T640 RE-1600 Description
The RE-1600 Routing Engine boots from the storage media in this order: the PC Card in SLOT 0 (if present), then the PC Card in SLOT 1 (if present), then the CompactFlash card (if present), then the hard disk.
Figure 1: Routing Engine 1600 (RE-1600)
Each RE-1600 (shown in Figure 1) consists of the following 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—Provides primary storage for software images, configuration files, and microcode. The fixed CompactFlash card 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.
- EEPROM—Stores the serial number of the Routing Engine.
- Interfaces for management—Provide information about Routing Engine status to devices (console, laptop, or terminal server) connected to the Routing Engine ports located on the CIP.
The faceplate of the RE-1600 contains the following:
- Two PC Card slots—Accept removable PC Cards, which store software images for system upgrades.
- Reset button—Reboots the Routing Engine when pressed.
- LEDs—Table 1 describes the functions of these LEDs.
Table 1: Routing Engine 1600 LEDs
Label
Color
State
Description
Slot LEDs 0 and 1
Red and green alternately
Blinking
Indicates that the Routing Engine is booting and the firmware is checking if a PC card is installed.
Green
On steadily
Indicates that the Routing Engine booted from the PC Card.
HD
Yellow
On steadily or blinking
Indicates activity on the hard drive.
Note: The LEDs on the Routing Engine do not necessarily indicate routing-related activity.
Note: The LEDs that report host module status (including Routing Engine status) are on the craft interface rather than the Routing Engine faceplate.
