This document provides configuration tasks for the 4-port Cisco HWIC-4ESW and the 9-port Cisco HWIC-D-9ESW EtherSwitch high-speed WAN interface cards (HWICs). These cards are Layer 2 Ethernet switches with Layer 3 routing capability, supported on Cisco 1800, 2800, and 3800 series integrated services routers. The manual covers configuration of VLANs, VLAN Trunking Protocol (VTP), Layer 2 interfaces, 802.1x authentication, Spanning Tree Protocol, MAC table manipulation, Switched Port Analyzer (SPAN), IGMP Snooping, Storm Control, and other features. It includes step-by-step procedures and examples for various configuration tasks.