Networking in Gallium

Gallium provides several networking modes to handle unexpected changes at the network edge.

Bridge Networks

By default, the system generates a Bridge network for each physical network adapter in your server. These networks are identified by the adapter's base MAC address. When a virtual machine connects to a Bridge network, it establishes a direct connection to the corresponding server port.

VLAN Networks

Users can create VLAN tagged networks by selecting the Add button on a parent Network Adaptor. Virtual machines can then attach to these newly created networks. The system prevents deletion of VLAN networks until all Virtual Machines have been detached.

Default NAT Network and Service Gateway

Beyond Bridge networks, Gallium offers a Default NAT network that performs IP address translation between the Hypervisor and VMs. In this configuration, a VM shares the Hypervisor's IP address, effectively masking the VM's actual IP address. The Service Gateway allows exposing specific VM ports to the local network.

Hypervisor to Console Connection

The Gallium Hypervisor requests an IP address through DHCP on each physical interface, maintaining readiness for connection with the Gallium Console. The system provides automatic failover capabilities — if one connection becomes unavailable, the Hypervisor seamlessly switches to the next available connection.

MTU Configuration

Maximum Transmission Unit settings apply to all networks at the parent Network Adaptor level. The valid MTU range spans from 1500 to 9000, and users can modify these settings through the Edit Network page.