The ExtremeCloud Tunnel Concentrator v25.03.01 Deployment Guide, issued in August 2025, provides comprehensive instructions for the installation, configuration, and management of the ExtremeCloud Tunnel Concentrator application on the Universal Compute Platform. This revision of the guide provides enhanced installation and configuration sections, including an ExtremeCloud IQ configuration example that uses an alternative configuration flow and also features a new section on how to run backups using Tunnel Concentrator. The document details the configuration of Generic Routing Encapsulation (GRE) tunneling to direct wireless traffic from access points to data centers for aggregation. It outlines steps for deploying Tunnel Concentrator with ExtremeCloud IQ or ExtremeCloud IQ Controller, covering prerequisites, installation tasks, GRE topology configurations, VLAN assignments, and user profiles. Administrative tasks include user management, log reporting, and application upgrades. This guide is intended for network administrators and IT professionals.