Arista Switch Command Cheat Sheet

These are typically executed on an EOS (Extensible Operating System) based Arista switch. Remember to replace the placeholders <VLAN_ID>, <INTERFACE>, <IP_ADDRESS>, and <PREFIX> with your actual values.

Please note that using these commands improperly can disrupt network service. Always verify with documentation and Arista's official resources, especially when you're configuring live devices.

Please replace the placeholders <VLAN_ID>, <INTERFACE>, <IP_ADDRESS>, <PREFIX>, <VLAN_NAME>, <DESCRIPTION>, <PASSWORD>, <USERNAME>, <NEXT_HOP_IP>, <DESTINATION_NETWORK>, <SUBNET_MASK> with your actual values.

Basic Commands

• Enter the command line interface: cli
• Exit from the current command line level: exit
• Show system information: show version
• Show interface status: show interfaces status

Configuration Commands

Enter the global configuration mode:

Create a VLAN:

Assign a name to VLAN:

Assign an interface to a VLAN:

Set an interface as a trunk:

Add a VLAN to a trunk:

Assign an IP address to an interface:

Verification Commands

• Verify VLAN configuration: show vlan
• Verify interface configuration: show interface Ethernet<INTERFACE>
• Verify IP configuration: show ip interface brief

Miscellaneous Commands

• Save running configuration to startup configuration: copy running-config startup-config
• Erase startup configuration: erase startup-config
• Reboot the switch: reload

Remember to save any changes with the write or copy running-config startup-config command to ensure the configuration stays after a reboot. Always consult the Arista documentation or a qualified network professional if you are unsure about any command.

These commands work for Arista switches running the EOS operating system. As with any command line tool, be sure to use these commands carefully and only if you're certain of their function.

Interface Commands

Setting a description on an interface:

Shutting down an interface:

No shutdown (Enable) an interface:

Setting a port as a Spanning Tree Protocol (STP) edge port:

Routing & VLAN Commands

Add a default route:

Adding a static route:

Create a VLAN interface (for routing):

Setting an IP address on a VLAN interface:

Security Commands

Configuring a password for the 'enable' command:

Configuring a user name and password for login:

Troubleshooting Commands

Ping a remote IP address:

Trace the network path to a remote IP:

Inspect the MAC address table:

Check the ARP table:

Display CPU utilization:

Display memory utilization:

Important Note

Whenever making changes to a live network device, make sure to save your configuration changes. On Arista switches, use the following command to save:

or

If you do not save your changes and the device is powered off or rebooted, all changes will be lost.

As always, if you're unsure about a command, consult the Arista documentation, use the '?' help feature in the CLI, or consult with a network professional.