How to Manage VLANs on Arista EOS: Create, Assign and Verify

2026年8月31日 LOG admin

Arista EOS handles VLANs the same way industry-standard 802.1Q networks expect, but the exact CLI steps are worth having memorized: create the VLAN, name it, assign ports in access or trunk mode, save, and verify. This quickstart walks through the complete lifecycle of a VLAN on an Arista switch — from the first vlan 10 to deletion — with copy-pasteable commands for your lab or production rollout.

Create a VLAN on Arista EOS

Access the switch CLI via SSH, console or Telnet, then enter privileged and configuration mode:

enable
configure terminal

Create the VLAN and give it a descriptive name. Valid VLAN IDs range from 1 to 4094:

vlan 10
name Marketing

Assign Ports to the VLAN

To assign an access port (single untagged VLAN):

interface Ethernet1
switchport mode access
switchport access vlan 10

To make the port a trunk carrying VLAN 10:

interface Ethernet1
switchport mode trunk
switchport trunk allowed vlan add 10

Save the Configuration

Exit to privileged EXEC mode and write the configuration to flash so the changes survive a reboot:

write memory

Verify the VLAN Configuration

show vlan
show vlan brief

show vlan brief gives a compact table of VLAN IDs, names and member ports — the fastest way to confirm your assignment took effect.

Delete a VLAN

To remove a VLAN that is no longer in use:

no vlan 10
write memory

Make sure the VLAN is not assigned to any active interface or virtual interface before deleting it, or the deletion will fail.