Aruba Networks Version 3.3 manual Understanding Master and Local Operation

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Chapter 5

Mobility Controller and

Access Point Deployment

Deployment of the Mobility Controller must be considered based on a number of factors; the most important of which is identifying where user traffic is ultimately destined. The Validated Reference Design for Campus Wireless Networks depicts the Master Controllers residing in the data center and Local Controllers deployed at the distribution layer.

Understanding Master and Local Operation

Once the controller count grows beyond a single pair of controllers, change control and network consistency can become an issue. To solve this management scalability issue, Mobility Controllers can be deployed in clusters consisting of a Master and one or more Local Controllers.

The Master Mobility Controller resides at the Management layer of the Aruba architecture in a data center environment. In an Aruba network employing a Master/Local design, configuration is performed on the Master and pushed down to the Locals. User troubleshooting, RF planning, and real-time RF visualization take place on the Master. The Master also controls Adaptive Radio Management (ARM) decisions for all Local controllers and is responsible for radio power and channel settings at the Wireless Access layer.

Data center
		File
Master		Web
Master
Mobility
Controller	Master	PBX
active	standby	RADIUS

Internet

Local	Local
Mobility	Mobility
Controller	Controller

Air monitor

Campus Wireless Networks Validated Reference Design Version 3.3 Design Guide

Mobility Controller and Access Point Deployment 23

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Contents Campus Wireless Networks Validated Reference Design Version Crossman Avenue Sunnyvale, California Phone Fax Contents Chapter RF Planning and Operation Introduction Aruba Reference ArchitecturesReference Documents Contacting Aruba NetworksTelephone Support Aruba’s User-Centric Network Architecture Understanding Centralized Wireless LAN NetworksCentralized Wlan Model Introducing Aruba’s User-Centric NetworkArubaOS ArubaOS and Mobility ControllerMobility Controller Air Monitor Multi-function Thin Access PointsAccess Point Aruba’s Secure Enterprise Mesh Network Mesh Portal or Mesh PointRemote AP Mobility Management SystemMobility Management System Proof-of-Concept Network PoC Network Physical DesignVlan PoC Network Logical and RF DesignProof-of-Concept Network Proof-of-Concept Network Campus Wlan Validated Reference Design Aruba Campus Wlan Physical ArchitectureAruba Campus Wlan Logical Architecture Data center ManagementMaster Campus Wlan Validated Reference Design Understanding Master and Local Operation Mobility Controller Access Point DeploymentMobility Controller High Availability Master Controller Redundancy Local Controller Redundancy Second Local controller has an opposite configuration Vlan Design Do Not Use Special VLANs Do Not Make Aruba the Default RouterVlan Vlan PoolsVLANs 10, 20, 30 User Mobility and Mobility DomainsMD1 ArubaOS Mobility DomainMaster Controller Placement Mobility Controller Physical Placement and ConnectivityMobility Controller and Thin AP Communication AP Placement, Power, and ConnectivityLocal Controller Placement Office Deployment AP Power and ConnectivityAP Location and Density Considerations Active Rfid Tag Deployment Voice DeploymentRequired Licenses Configuration Profiles and AP GroupsMobility Controller Configuration Configuration ProfilesAP group Profile TypesProfile Planning SSIDs, VLANs and Role DerivationAP Groups VLANs SSIDsRole Derivation Secure Authentication MethodsAuthenticating with Corporate Authentication Methods for Legacy Devices Authenticating with Captive PortalEmployee Role Configuring Roles for Employee, Guest and Application UsersGuest Role Create a bandwidth contract and apply it to an AP group Create the block-internal-access policy Modify the guest-logon role Device Role Wireless Attacks Wireless Intrusion Detection SystemRole Variation by Authentication Method Rogue APs Page Mobility Controller Configuration RF Planning and Operation RF Plan ToolAdaptive Radio Management Page Minimum Scan Time Sec WMM and QoS Voice over Wi-FiQuality of Service Voice-Aware RF Management Voice Functionality and FeaturesTraffic Prioritization Network Wide QoSComprehensive Voice Management Voice over Wi-Fi LAN / WAN Controller Clusters Mobility Management SystemMultiple Master/Local Clusters Page Multiple Master/Local Clusters Licenses Appendix aLicenses Wlan Extension with Remote AP Appendix BWlan Extension with Remote AP Alternative Deployment Architectures Small Network DeploymentMobility Controller located in the network data center Medium Network DeploymentBranch Office Deployment Corporate data center DMZ Pure Remote Access Deployment