What it is
The UMS is the server that manages the endpoints. Configuration, grouping, monitoring, policies, firmware, certificates, network settings and software packages all come from it, applied to a single device or to a group. It manages IGEL OS 11 and 12 side by side.
Two consoles
UMS 12 has a browser-based Web App and a Java-based Console. The Web App is where day-to-day work happens; the Console still carries the deeper administrative functions.
How it talks to the endpoints
Through the Unified Protocol, a WebSocket connection that carries everything between UMS 12 and IGEL OS 12, and only between those two. Because it is a single WebSocket, an external load balancer such as F5 BIG-IP or Citrix NetScaler can sit in front of it. That gives you load distribution and availability in the management layer.
With Distributed UMS, several UMS servers run on one shared database.
What the licence level decides
All IGEL OS Editions include a UMS licence. An external database, the IGEL Cloud Gateway and Distributed UMS arrive with Standard; the distributed app repository and using the UMS as a certificate authority proxy arrive with Enterprise.
Downgrading takes features away immediately, and IGEL says so in the manual. Nothing is deleted, so an upgrade restores it.
