VLAN Interfaces

When it is necessary to provide a system access to one of the defined VLANs without having an available network interface, create the virtual interface on the primary ethernet interface. The VLANs defined for WilliamsNet are:

VLAN number	VLAN name	IP subnet	VLAN purpose
1	HomeNet	10.0.0.0/24	Primary VLAN
10	StorageNet	10.1.0.0/24	Private network for Development Cluster
15	SCSIVLAN	10.2.0.0/24	isolated VLAN for iSCSI Storage Traffic
20	MgmtVLAN		unused
21	NodeBackbone		unused
22	StorageVLAN		unused

Note that all these are defined in the HP Procurve Switches (http://10.0.0.1 -- interface requires java plugins, and only accessible using IE 11)

When creating the virtual interface, ensure that the port used by the system is included in the 'tagged' definition for the appropriate VLAN in the ProCurve VLAN configuration.

Debian/Ubuntu

The following is excerpted from https://wiki.debian.org/NetworkConfiguration#Bridges_and_VLANs

The interface can be set up manually using the following commands:

modprobe 8021q

apt install vlan

vconfig add eth0 222    # 222 is vlan number
ifconfig eth0.222 up
ifconfig eth0.222 10.10.10.1 netmask 255.255.255.0

As this will disappear with the next reboot, it is recommended to put the definition in the /etc/network/interfaces file:

auto eth0.222
iface eth0.222 inet static
        address 10.10.10.1/24
        vlan-raw-device eth0