gNMI Protocol Feature Information for the gNMI Protocol Feature Name Release Feature Information 4200 Series PROTO Encoding Cisco IOS XE Dublin 17.11.1 gNMI protocol supports PROTO encoding. The gnmi.proto file represents the blueprint for generating a complete set of client and server-side procedures that represents the framework for the gNMI protocol. This feature was implemented on the following platforms: • Cisco Catalyst 9200, 9200L, and 9200X Series Switches • Cisco Catalyst 9300, 9300L, and 9300X Series Switches • Cisco Catalyst 9400 and 9400X Series Switches • Cisco Catalyst 9500, 9500 High-Performance, and 9500X Series Switches • Cisco Catalyst 9600 Series Switches gNMI Protocol 27