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- Fast Track to Rack Installation and Power
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- Returning an EX4650 Chassis or Components
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English

Configuring Junos OS on the EX4650

date_range 28-Dec-20

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EX4650 Switch Default Configuration

Each EX4650 switch is programmed with a factory default configuration that contains the values set for each configuration parameter when a switch is shipped. The default configuration file sets values for system parameters such as the system log and file messages.

When you commit changes to the configuration, a new configuration file is created that becomes the active configuration. You can always revert to the factory default configuration. See Reverting to the Default Factory Configuration for the EX Series Switch.

A factory default configuration file of an EX4650 switch looks like this:

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system {
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    commit {
        factory-settings;
    }
}

Connecting and Configuring an EX4650 Switch

Before you begin connecting and configuring an EX4650 switch, gather the following information:

Name the switch will use on the network
Domain name the switch will use
IP address and prefix length information for the Ethernet interface
IP address of a default switch
IP address of a DNS server
Password for the root user

The EX4650 switch is shipped with the Junos OS preinstalled and ready to be configured when the switch is powered on. There is a 64-MB internal NAND Flash memory device located on the baseboard for BIOS storage. You can insert the USB storage device into the USB slot on the front panel. EX4650 comes with a single SSD. There are two copies of the software: one on the SSD drive and one on a USB flash drive that can be inserted into the slot in the faceplate of the RE module.

When the switch boots, it first attempts to start the image on the SSD drive by default. If you wish to boot from the USB, you need to manually choose the option accordingly.

You configure the switch by issuing Junos OS command-line interface (CLI) commands, either on a console device attached to the console (CON) port on the front panel, or over a telnet connection to a network connected to the Ethernet management (C0 or C1) port on the front panel.

This procedure connects the switch to the network, but does not enable it to forward traffic. For complete information about enabling the switch to forward traffic, including examples, see the Junos OS configuration guides.

To configure the software:

Verify that the switch is powered on.
Log in as the root user. There is no password.
Start the CLI.
```
root# cli
root@>
```
Enter configuration mode.
```
cli> configure 
[edit]
root@#
```

Set the root authentication password by entering either a clear-text password, an encrypted password, or an SSH public key string (DSA or RSA).

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[edit]
root@# set system root-authentication plain-text-password
New password: password 
Retype new password: password 

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[edit]
root@# set system root-authentication encrypted-password encrypted-password

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[edit]
root@# set system root-authentication ssh-dsa public-key

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[edit]
root@# set system root-authentication ssh-rsa public-key

Configure the name of the switch. If the name includes spaces, enclose the name in double quotation marks (“ ”).
```
[edit]
root@# set system host-name host-name
```

Create a user account.

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[edit]
root@# set system login user user-name authentication plain-text-password
New password: password
Retype new password: password

Set the user account class to super-user.

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[edit]
root@# set system login user user-name class super-user

Configure the switch’s domain name.
```
[edit]
root@# set system domain-name domain-name
```
Configure the IP address and prefix length for the switch’s Ethernet interface.
```
[edit]
root@# set interfaces em0 unit 0 family inet address address/prefix-length
```
Configure the IP address of a backup router, which is used only while the routing protocol is not running.
```
[edit]
root@# set system backup-router address
```
Configure the IP address of a DNS server.
```
[edit]
root@# set system name-server address 
```
(Optional) Configure the static routes to remote subnets with access to the management port. Access to the management port is limited to the local subnet. For more information about static routes, see the Junos OS Administration Library for Routing Devices.
```
[edit]
root@# set routing-options static route remote-subnet next-hop destination-IP retain no-readvertise
```
Configure the telnet service at the [edit system services] hierarchy level.
```
[edit]
root@# set system services telnet 
```

(Optional) Display the configuration to verify that it is correct.

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[edit]
root@# show
system {
    host-name host-name;
    domain-name domain-name;
    root-authentication {
        authentication-method (password | public-key);
    }
    name-server {
        address;
    }
}
interfaces {
    em0 {
        unit 0 {
            family inet {
                address address/prefix-length;
            }
        }
    }
}

Commit the configuration to activate it on the switch.
```
[edit]
root@# commit
```
(Optional) Configure additional properties by adding the necessary configuration statements. Then commit the changes to activate them on the switch.
```
[edit]
root@switch# commit
```
When you have finished configuring the switch, exit configuration mode.
```
[edit]
root@switch# exit
root@switch>
```

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EX4650 Switch Hardware Guide

ON THIS PAGE

Configuring Junos OS on the EX4650

EX4650 Switch Default Configuration

Connecting and Configuring an EX4650 Switch

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