The Cisco SM-D-ES3G-48-P Ethernet Switch Module is an internal EtherSwitch Service Module for Cisco Integrated Services Routers, delivering 48 Gigabit Ethernet PoE ports with Layer 2 and Layer 3 switching capabilities. It is designed for enterprise branch offices, campus edge networks, and retail environments that require high-density PoE connectivity, and it supports IP phones, wireless access points, CCTV systems, and other wired endpoints while enabling VLAN, QoS, traffic management, and switching control. Management is via Cisco IOS on the router platform, with model number SMDES3G48P and compatibility limited to ISR service-module slots.
