Release Notes for Cisco IOS XE SD-WAN Release 16.9 and Cisco SD-WAN Release 18.3 Last updated Save as PDF Cisco SD-WAN documentation is now accessible via the Cisco Product Support portal. For Configuration Guides for the latest releases, see Configuration Guides. For 'Cisco SD-WAN Configuration Guide for Cisco IOS XE SD-WAN Release 16.9.x and Cisco SDWAN Release 18.3.x' content, see Release Notes for Cisco IOS XE SD-WAN Release 16.9 and Cisco SD-WAN Release 18.3.