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Front Panel of a JA2500 Appliance

The front panel of the JA2500 Junos Space Appliance, shown in Figure 1, consists of the components listed in Table 1.

Figure 1: JA2500 Appliance Front PanelJA2500 Appliance Front Panel

Hard drive


Console port


IOC expansion slot


Hardware Fault LED


Network (Ethernet) ports


Hard Disk Activity LED


USB port


Power LED

Table 1: JA2500 Appliance Front Panel Components



Hard drives

The JA2500 appliance has six hot-swappable 1-TB hard disk drives in a RAID 10 configuration. The hard drives are numbered (0 through 5) as follows:

  • Slot 3 (top left) and Slot 0 (bottom left)

  • Slot 4 (top middle) and Slot 1 (bottom middle)

  • Slot 5 (top right) and Slot 2 (bottom right)

I/O card (IOC) expansion slots

IOC expansion is currently not supported.

Network ports

Four RJ-45 Ethernet 10/100/1000 ports, labeled 0 through 3 from left to right

USB port

One USB port

Console port

One RJ-45 console port

Chassis LEDs

The following chassis LEDs, located next to the console port, are present on the appliance:

  • Hardware Fault LED (red), which indicates that a fan, power supply, or temperature alarm has occurred.

  • Hard Disk Activity LED (yellow), which indicates that the hard disk is in use.

  • Power LED (green), which indicates that the appliance is powered on.

Ethernet (LAN) port LEDs

The following LEDs are present above each Ethernet port:

  • Link/Activity LED (green), which indicates the link (On) or link activity (Blinking)

  • Speed LED, which indicates the link speed:

    • Off—10 Mbps

    • Green—100 Mbps

    • Yellow–1000 Mbps or 1 Gbps

Hard drive LEDs

In addition to the LEDs on the appliance chassis, there are two LEDs on each hard disk:

  • Hard Disk Activity LED (green), which indicates disk activity

  • Hard Disk Failure LED (red), which indicates disk failure (On) or disk rebuilding (Blinking)