How to Enable Promiscuous Mode on a vSwitch in Hyperion

Written By Christian Castagna (Administrator)

Updated at February 5th, 2026

→ Applies to: Hyperion 9.x and above

PREREQUISITES
Ensure the appliance is running SynetoOS 6.0.1 or later

All commands in this article are intended to be executed via Hyperion CLI.

 

Step 1. Connect to Hyperion appliance via SSH as admin

ssh admin@<your_ip_address_or_hostname>

 

Step 2. Become Super User

sudo su

 

Step 3. List all vSwitches

syneto-nmctl vswitch list

EXAMPLE OUTPUT

syneto-nmctl vswitch list

=== Virtual Switches ===
--- General purpose Virtual Switches ---
Management Network        vswitch0     bridge   activated
  └─ em2 (Management Uplink)
cni0                      cni0         bridge   activated
virbr0                    virbr0       bridge   activated

--- VLAN-Dedicated Virtual Switches ---

 

Step 4. Enable promiscuous mode (replace <vswitch_name> with the correct vswitch name)

ip link set dev <vswitch_name> promisc on

EXAMPLE

ip link set dev vswitch0 promisc on