If you have performed a reset function on your router. You need to change the password and username for security. Let us take a look at the steps to change Arris router password. Customizing the password is necessary to avoid unwanted access to your account.
How to change Arris router password?
Login to your Arris router.
Click on security and utilities.
Go to default settings and chose the option to reset.
Enter the default credentials which are as follows, username : admin, password : admin.
Now, go to settings and choose and new password and click ok.