[. . . ] ■ 16K MAC address table ■ Policy-based QoS optimizes multi-service quality Business-class Layer 2 Fast Ethernet Switch with Access Control List (ACL) The ZyXEL ES3500-24 has been specially designed for small- and medium-scale businesses (SMB) to deliver valuable Ethernet services. [. . . ] Port security provides the ability to deny unauthorized users from accessing the network. Moreover, the 802. 1X feature cooperating with RADIUS is useful to prevent unauthorized access based on username and password (or other credentials) and acts as powerful access control for converged networks with mixed wired and wireless access. The ES3500-24 provides a multilayer (L2/L3/L4) ACL suite of sophisticated policy-based control mechanisms that enables SMB to deploy easily based on actual network environment needs via a Web GUI or command line interface to prevent abnormal or illegal access. The policies can be ES3500-24 24-port FE L2 Switch with GbE Uplink defined to deny packets based on source and destination MAC addresses, IP addresses or TCP/UDP ports. ES3500-24 24-port FE L2 Switch with GbE Uplink Resilient and redundant design A quick recovery and round-the-clock network is vital for SMB to establish a robust network. The ES3500-24 provides comprehensive features to make sure network is well operated. The IEEE 802. 3ad Link Aggregation feature reduces network downtime by providing redundant paths and bandwidth aggregation to critical connections, while IEEE 802. 1w Rapid Spanning Tree Protocol (RSTP) and IEEE 802. 1s Multiple Spanning Tree Protocol (MSTP) allow immediate recovery from failed connections by sending packets via the backup link. Digital Diagnostics Monitoring Interface (DDMI) SFP support The enhanced digital interface allows real-time access to the device operating parameters, and it includes optional digital features such as soft control and monitoring of SFP I/O signals. [. . . ] All other brands, product names, or trademarks mentioned are the property of their respective owners. [. . . ]