Connecting the MX150 to the Network
Connecting an MX150 to a Management Console
MX150 has a console port with an RJ-45 connector. Use the console port to connect the device to a management console or to a console server.
Ensure that you have an RJ-45 to DB-9 rollover cable available. An RJ-45 cable with an RJ-45 to DB-9 adapter is provided with the device.
If your laptop or PC does not have a DB-9 plug connector pin and you want to connect your laptop or PC directly to the MX150, use a combination of the RJ-45 cable and RJ-45 to DB-9 adapter supplied with the device and a USB to DB-9 plug adapter. You must provide the USB to DB-9 plug adapter.
To connect the MX150 to a management console (see Figure 1 and Figure 2):
- Connect one end of the Ethernet cable to the console port
(labeled
CON
). - Connect the other end of the Ethernet cable into the console server (see Figure 1) or management console (see Figure 2).


Connecting an MX150 to a Management Console Using Mini-USB Type-B Console Port
You can configure and manage the MX150 by using the RJ-45 console port or the Mini-USB Type-B console port. However, the console input will be active only on one port at a time—only one port will be set active at a time.
By default, the RJ-45 port is set as an active console port and the Mini-USB Type-B port is the passive console port. For information about configuring the console port type, see Configuring the Console Port Type (CLI Procedure).
If your laptop or PC does not have a DB-9 plug connector pin or RJ-45 connector pin, you can connect your laptop or PC directly to an MX150 device by using a mini-USB cable that has a Standard-A USB connector on one end and a Mini-USB Type-B (5 pin) connector on the other end.
This section describes the process of connecting an MX150 to the management console by using the Mini-USB Type-B console port.
For information about configuring and managing an MX150 by using the RJ-45 console port, see Connecting an MX150 to a Management Console.
Before you begin connecting an MX150 by using the Mini-USB Type-B console port:
Ensure that the USB to Serial driver is installed on the host machine. You can download the driver from https://webdownload.juniper.net/swdl/dl/secure/site/1/record/5029.html
Ensure that the hyper terminal properties of the console server or laptop are set as follows:
Baud rate—9600
Flow control—None
Data—8
Parity—None
Stop bits—1
DCD state—Disregard
Ensure that you have the following parts and tools available:
1 mini-USB cable with Standard-A and Mini-USB Type- B (5-pin) connectors (not provided).
To connect the MX150 to the console by using Mini-USB Type-B console port:
- Connect the Standard-A connector of the mini-USB cable to the host machine (PC or Laptop).
- Connect the Mini-USB Type-B (5-pin) connector of the mini-USB
cable to the Mini-USB Type-B console port (labeled
CON
) on the MX150. - Set the Mini-USB Type-B console port as the active console
port by using the command port-type.
For information about configuring the console port type, see Configuring the Console Port Type (CLI Procedure). - Reboot the MX150.
After the connection is established, the Mini-USB Type-B becomes the active console port. The host machine connected to the Mini-USB Type-B console port displays log messages and lets you control MX150 functionality through it.