Networking

This page shows where to view and edit the main networking elements in MAAS. It also links to some important networking sub-topics. See Concepts and terms for networking element definitions.

Main view

To access the main networking view visit the 'Networks' page:

networking main page

In the above example the following networking elements can be seen: fabrics, VLANs, subnets, and spaces. Due to the nature of the particular network topology being represented here, some elements are used multiple times. To be clear, in this example there are 3 fabrics, 1 VLAN, 3 subnets, and 1 space and they should all be detected automatically by MAAS.

This main view can also be filtered either by fabrics or by spaces through the use of the 'Group by' dropdown.

Although each of the elements can be clicked upon to open up its own window, fabrics, VLANs, and spaces do not have much in the way of configuration; their names and descriptions can be altered. A VLAN, however, can additionally have its MTU changed and also has an action available for enabling DHCP. See the DHCP page.

A subnet, on the other hand, can be configured considerably and its window also shows information pertinent to the day-to-day operation of MAAS. For these reasons, a subnet will now be examined in more detail.

Subnet window

Clicking a subnet (here 10.248.64.0/19) will display its window. We'll look at this example window by sections.

The Subnet summary section:

networking subnets page summary

Warning:

Here, values for 'Gateway IP' and 'DNS' (nameserver), and optionally 'Description', should be entered. Gateway and DNS values are passed to deployed nodes unless an external DHCP server will be used to deploy nodes. There is also the option of changing the subnet's fabric, VLAN, and space providing your network topology allows for it.

Even if an external DHCP server will be used it is highly recommended that values for gateway and nameserver be entered in case you later remove your external DHCP and/or choose an IP assignment mode other than 'DHCP'.

The Utilisation section:

networking subnets utilisation

'Subnet addresses' shows the total number of addresses associated with the subnet, here 8190. 'Availability' shows how many of those addresses are unused, and therefore "available", here 8074, which corresponds to a percentage of roughly 99% of the total. Finally, 'Used' shows the percentage that is used, here roughly 1%.

The Reserved section:

networking subnets reserved

This shows the reserved IP ranges. This is an important subject and is treated separately in IP ranges.

The Used section:

networking subnets used

This section displays hosts (not necessarily MAAS nodes) associated with the used addresses along with related bits of host information.