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Physical and Logical Infrastructure Requirements

Chapter Description

In this sample chapter from CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide: Designing & Implementing Cisco Enterprise Wireless Networks, you will learn how to determine physical infrastructure requirements including AP power, cabling, switch port capacity, mounting, and grounding. You will also learn how to determine logical infrastructure requirements such as WLC/AP licensing requirements based on the type of wireless architecture.


This chapter focused on both the physical and logical infrastructure requirements of wireless LAN deployments. In this chapter you have learned the following:

  • The various PoE options available for different APs as well as the capabilities and function of each PoE mechanism.

  • How higher-performance wireless standards, such as 802.11ac Wave 2 (Wi-Fi 5) and 802.11ax (Wi-Fi 6), can be supported through mGig

  • AP mounting options, including above and below a tile ceiling mount and wall mount options

  • The importance of grounding APs in certain situations

  • The need to consider the logical path and its impact on the underlying physical infrastructure, including the CAPWAP control and data channels as well as AAA and DHCP services

  • Different types of licensing models available for different Cisco Wireless LAN controllers, including RTU licensing and Smart Licensing, which is as a method of pooling licenses across the enterprise

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