Overview

Readers will leader how to connect to an EdgeSwitch using a RJ45 serial console cable.

NOTES & REQUIREMENTS:

Applicable to the latest EdgeSwitch firmware on all applicable EdgeSwitch models that include console ports. Please see the Related Articles below for more information.

Devices used in this article:

ES-16-XG

Supported Models & Serial Console Settings

The tables below list the EdgeSwitch models that are equipped with a RJ45 serial console port:

Model	Console Port
ES-8-150W
ES-12-F
ES-16-XG
ES-16-150W
ES-24-250W
ES-24-500W
ES-24-Lite
ES-48-Lite

Model	Console Port
ES-48-750W
ES-48-500W
ES-16XP
ES-8XP
ES-5XP
ES-10X
ES-10XP

The default serial port settings are listed below:

Baud rate: 115200
Data bits: 8
Parity: NONE
Stop bits: 1
Flow control: NONE

NOTE: Some of the earlier EdgeSwitch revisions did not include a console port.

Connecting to Serial Console

A USB-to-Serial adapter will be used to connect to the console port of the EdgeSwitch.

NOTE: In order to connect to the console we will need to use the following items/programs:

RJ45 to DB9 serial console cable (rollover cable)
USB to DB9 adapter
Terminal emulation program, such as PuTTY or the macOS/Linux terminal

1. Open the terminal emulator and specify the serial COM line and the baud rate/speed.

Windows Client

Enter the following information in the PuTTY window.

macOS Client

Open Terminal Application and find the serial interface ID.

ls -ltr /dev/*usb*

The serial interface will display as tty. Example output below:

ls -ltr /dev/*usb*
crw-rw-rw-  1 root  wheel   21,   3 Feb  8 15:48 /dev/cu.usbserial-AI038TPF
crw-rw-rw-  1 root  wheel   21,   2 Feb  9 08:56 /dev/tty.usbserial-AI038TPF

Use the screen command to connect to console by pasting in the path to the serial interface.

screen /dev/tty.usbserial-AI038TPF 115200

ATTENTION: Replace /dev/tty.usbserial-AI038TPF with the value given when using the ls -ltr /dev/*usb* command.

2. Connect to the EdgeSwitch and log in using your credentials.

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Welcome to EdgeSwitch!
 
By logging in, accessing or using Ubiquiti Inc. (UI) products, you
acknowledge that you have read and understood the Ubiquiti Licence
Agreement (available in the WebUI and at https://www.ui.com/eula/)
and agree to be bound by its terms.

User: <username>
Password: <password>

NOTE: The default username and password combination is ubnt/ubnt.

3. Press ? to get a listing of all commands available.

Intro to Networking - How to Establish a Connection Using SSH

EdgeRouter - Connect to Serial Console