The ExtremeCloud Tunnel Concentrator v25.04.01 Deployment Guide, issued in October 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 broadcast and multicast traffic controls, the ability to disable ARP Proxy for deployments that are managed by ExtremeCloud IQ, and simplified packet captures that combine the Listening and Bridging interfaces into a single capture file. This 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.