Switch ZYXEL GS1920-48HP, 44x GbE ports, 4x Combo SFP/RJ-45 ports, managed, for rack mounting

ZYXEL GS1920-48HP is a managed switch for rack mounting, aimed at more serious network environments – offices, educational institutions, larger sites. You get a 48-port solution with support for key enterprise security and traffic control features. The device is built on a rich set of networking standards and extended IPv6 support, making it relevant for modern infrastructures. Weighing 4.1 kg and with a standard power supply of 100–240V AC, 50–60Hz, the switch is a typical "rack-ready" solution for 24/7 operation.

What you get

GS1920-48HP is designed to handle a large number of clients and devices – with a table of 16K MAC addresses you can comfortably use it in more complex networks with multiple VLANs and segments. The wide support for IPv6 management (dual stack, ICMPv6, DHCPv6, neighbor discovery) gives you flexibility when transitioning from IPv4 to IPv6, without changing hardware. The available security features such as 802.1X, TACACS+/RADIUS, ACL for IPv4/IPv6, DHCP snooping, and IP source guard allow you to control who and how connects to your network. Rack mounting is straightforward, so you can easily integrate it into an existing rack with other network equipment.

• Stable power supply 100–240V AC, 50–60Hz, suitable for standard electrical installations in offices and server rooms.
• Table with up to 16K MAC addresses, allowing service for a large number of devices and complex network topologies without issues with address space.
• Full set of L2/L3 security mechanisms: 802.1X, port security, MAC/IP filtering, DHCP snooping, ARP inspection, IP source guard and ACLs for IPv4/IPv6 for strict access control.
• Support for TACACS+/RADIUS, SSH v1/v2 and SSL, providing secure remote access and centralized management of administrator accounts.
• Features like intrusion lock, MAC freeze, port isolation and static IP-MAC-port binding, which help limit abuses, spoofing, and unauthorized devices.
• Extended IPv6 support (IPv6 over Ethernet, dual stack, ICMPv6, DHCPv6, neighbor discovery, path MTU), ready for modern networks and future expansions.
• Compatibility with key IEEE standards such as 802.3, 802.3u, 802.3ab, 802.3z, 802.3af, 802.3at, 802.3az, 802.3x, 802.3ad, 802.1Q, 802.1X, ensuring operation with a wide range of network devices and features like VLAN, LACP, and energy efficiency.

Who it is suitable for

This switch is a logical choice for small and medium businesses, offices with many workstations, schools, and sites where centralized management, VLAN segmentation, and tight security are required. It is also suitable for admins planning a transition to IPv6 and wanting to avoid future upgrades of core switches. It is not the most logical option if you are looking for a completely basic, unmanaged switch for a home network.

The most meaningful aspect of this model is the combination of large MAC capacity, rich IPv6 support, and a serious package of security features, all gathered in a convenient rack-mountable managed switch from ZYXEL.