Initially Configuring The Acx4000 Router - Juniper ACX4000 Hardware Manual

4. Orient the terminal block according to the labels to the left of the appropriate relay contact (NC
means "normally closed, C means "common," and (NO means "normally open").
5. Plug the terminal block into the relay contact and use a 2.5-mm flat-blade screwdriver to tighten the
screws on the face of the block.
6. Attach the other end of the wires to the external device.
If attaching a reporting device for the other kind of alarm, repeat the procedure.
SEE ALSO
ACX4000 Alarm Contact Port Overview | 48
Alarm Contact Port Pinouts for ACX4000 Routers | 87

Initially Configuring the ACX4000 Router

The ACX4000 router ships with Junos OS preinstalled and ready to be configured when the router is
powered on. One 4-GB internal NAND Flash memory device is divided into two partitions (da0s1 and
da0s2). One partition is marked as the active partition, and the other partition functions as an alternate
partition. The NAND Flash device acts as the hard drive. Two USB ports on the front panel accept USB
storage devices (usb0 and usb1) that can also function as alternate boot devices.
When the router boots, it first attempts to start the image on the USB flash memory device. If a USB
flash memory device is not inserted into the router or the attempt otherwise fails, the router next tries
the active partition on the NAND flash device, and then tries the alternate partition on the NAND flash
device.
You configure the router by issuing Junos OS command-line interface (CLI) commands, either on a
console device attached to the CONSOLE/AUX port on the front panel, or over a telnet connection to a
network connected to the Routing Engine MGMT port on the front panel.
Gather the following information before configuring the router:
• Name that the router will use on the network
• Domain name that the router will use
• IP address and prefix length information for the Ethernet interface
• IP address of a default router
• IP address of a DNS server
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