Layer 3 managed gigabit switches support Layer 2 switching along with network-layer functions such as static, inter-VLAN, policy-based, or multicast routing. Layer 2 managed switches typically focus on Ethernet traffic within the local network, using features such as VLANs, MAC-based forwarding, spanning tree, and traffic management, so Layer 3 models can help route traffic between network segments without relying as heavily on a separate router.

Compare the number of copper ports you need, including any Power over Ethernet (PoE) ports, along with uplink options such as SFP and SFP+ ports for fiber or higher-speed switch-to-switch connections. For network speeds, look for Gigabit Ethernet for standard devices, multi-gigabit ports for higher-throughput endpoints, and 10G uplinks when your design includes AV over IP, large media transfers, or links between switches.

Power over Ethernet (PoE) lets a layer 3 managed gigabit switch deliver data and power over one network cable to devices such as access points, cameras, phones, and AV endpoints, which can simplify installation. When selecting a switch, match the PoE or PoE+ and PoE++ support, port count, and total power budget to connected devices, then plan uplinks and power redundancy for larger deployments.

When using layer 3 managed gigabit switches for AV over IP, look for VLAN support, IGMP features, multicast routing, and compatibility with the audio and video protocols in your system to help control traffic and keep media streams moving efficiently. For network expansion, plan port counts, Power over Ethernet (PoE) needs, fiber or 10G uplinks, rack space, and management options such as stacking, redundancy, or remote monitoring.