What VLAN features does my Synology Router support?

What VLAN features does my Synology Router support?

Purpose

A VLAN (Virtual Local Area Network) is a group of devices that behave as if they were on the same physical LAN (Local Area Network). This article clarifies what VLAN features are supported by a Synology Router.

Resolution

Features Supported by a Synology Router
VLAN ID assignment to a Synology Router
Some ISPs (Internet Service Providers) require routers to have VLAN IDs (i.e., VIDs or VLAN tags) for Internet connection.
Yes
Network segmentation with VLANs Yes (SRM 1.3 and above)
Trunk ports Yes (SRM 1.3 and above)