Categories October Surprise 2016 Configure HA SSO on Catalyst 9800 Quick Start Guide – Cisco Post author By Mike Nova Post date July 22, 2026 This document describes how to configure High Availability stateful switchover (SSO), on a Catalyst 9800 Wireless LAN Controller (WLC). ← RT by @mikenov: RT by @mikenov: Russia is burning – new images for your photo calendar. Logistics center in Krasnodar, oil depot in Armavir. → RT by @mikenov: RT by @mikenov: 🔴 Ukrainian drones struck a Russian Wildberries distribution center.