Please note, this is the first IOS XE release for IE-3500 series switch. These advanced layer 3 features are currently not supported: BGP, VRF, Rapid Per-VLAN STP (RPVST+), Routed Ports, Loopback, VRRP, User-defined ACLs on VLAN, SmartPort, Encrypted Traffic Analytics (ETA), Detailed Traffic Analytics (on trunk ports, port channels, and uplink modules). In addition, IE-3500 expansion modules aren't supported at this time.