The KSZ9897 is a fully integrated layer 2, managed, seven-port gigabit Ethernet switch with numerous advanced features. Five of the seven ports incorporate 10/100/1000MBps PHYs. The other two ports have interfaces that can be configured as SGMII, RGMII, MII or RMII

Integrated 7-port 10/100/1000 Layer-2 switch with Gigabit uplink
Non-blocking wire-speed Ethernet switching fabric:
Advanced Switch Capabilities
Full-featured forwarding and filtering control, including Access Control List (ACL) filtering

VLAN supportfor 128 active VLAN groups and the full range of 4096 VLAN IDs
Tag insertion or removal on a per port basis and support for double-tagging
VLAN ID tag/untag options on per port basis
Full-duplex flow control and half-duplex back pressure collision control
IGMPv1/v2/v3 snooping for multicast packet filtering
IPv6 multicast listener discovery (MLD) snooping
QoS/CoS packets prioritization support: 802.1p