Module 2 — Network Access focuses on how users, devices, switches, and wireless infrastructure connect to and communicate across the local network. This module builds the practical Layer 2 foundation required for enterprise campus networking. You will learn how Ethernet switches forward traffic, how VLANs separate users and services, how 802.1Q trunks carry multiple VLANs between switches, and how EtherChannel combines physical links for additional bandwidth and redundancy. The module also covers Spanning Tree Protocol (STP) and Rapid PVST+, including root bridge selection, port roles, loop prevention, PortFast, and BPDU Guard. Wireless access is also introduced through access points, wireless LAN controllers, CAPWAP, AP modes, WLAN configuration, and VLAN integration. In addition, you will work with CDP and LLDP for neighbor discovery and learn secure methods for accessing and managing network devices. What You Will Learn Configure and verify VLANs, access ports, and voice VLANs Configure 802.1Q trunks and native VLANs Understand and verify inter-switch VLAN connectivity Configure Layer 2 and Layer 3 EtherChannel Use LACP and PAgP Understand EtherChannel negotiation and bundle formation Configure and verify STP and Rapid PVST+ Identify root bridge, root ports, designated ports, and alternate/blocking ports Configure PortFast and BPDU Guard Use CDP and LLDP to discover directly connected devices Understand Cisco wireless architectures and AP operating modes Understand WLC, CAPWAP, WLANs, and VLAN mapping Interpret basic wireless LAN GUI configuration Configure and understand network device management access Integrate multiple Network Access technologies into a complete campus topology Practical Focus This module is designed around real configuration and troubleshooting scenarios. You will work through device-by-device configurations, verification commands, expected outputs, and fault-isolation steps. The labs progress from individual technologies to an integrated campus access design: VLANs → Trunks → CDP/LLDP → EtherChannel → STP/Rapid PVST+ → Wireless → Device Management → Integrated Campus Network Module Outcome By the end of Module 2, you should be able to build, verify, and troubleshoot a small enterprise access network using Cisco switches, wireless infrastructure, and common Layer 2 technologies.