This topic discusses the following:
A campus network refers to a proprietary local area network (LANLocal Area Network. A LAN is a network of connected devices within a distinct geographic area such as an office or a commercial establishment and share a common communications line or wireless link to a server.) or a set of interconnected LANs serving a corporation, government agency, university, or a similar organization. A typical campus network encompasses a set of buildings in close proximity with a large number of Wi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard.-connected clients and applications deployed in public, private, and hybrid clouds. A is generally an offshoot of the campus network with a small area of operation.
In campus and branch networks, the Wireless Local Area Networks (WLANsWireless Local Area Network. WLAN is a 802.11 standards-based LAN that the users access through a wireless connection.) are critical to address the challenges of widespread user mobility, client density, and security. Over the last few years, the architecture of WLANs has evolved significantly to keep pace with the changing needs of wireless users. However, with digital transformation and applications moving to cloud, WLANs must rapidly evolve to provide seamless user experience and operational simplicity to quickly deploy, manage, and monitor networks.
To address some of these business challenges, Aruba offers APs and gateways running AOS 10.x. You can now deploy and manage your WLANs from a single and unified cloud-based network management system called Aruba Central. Devices running AOS 10.x simplifies network administration in Aruba Central with automated workflows, end-to-end visibility, AI powered insights, and analytics to enhance and optimize wireless experience for users.
AOS 10.x is currently a limited availability product from Aruba. Installing the operating system on APs and gateways requires specific pre-configuration settings that are performed by the Aruba Technical Support team.
The Aruba campus architecture consists of two layers:
—The infrastructure layer consists of a WLAN setup which can be either a campus setup or a branch setup. The campus setup can consist only of access points (APs) or APs combined with gateway clusters. In case of a branch setup, the infrastructure layer includes an AP.
Aruba Central which is a cloud management SAAS platform. The Network Operations app is one of the Aruba apps which is a part of Aruba Central and this app helps to create the SSIDService Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network. profiles for the different WLAN campus and branch setups.—The cloud management layer consists of
The following figure is an architectural representation of the AOS 10.x with components displayed for both the cloud management and infrastructure layers. As shown in the figure, Aruba Central and the Network Operations app offers both management and WLAN control and services for the underlying infrastructure layer.
Figure 1 Aruba Campus Architecture and Components for Devices Running AOS 10.x
As shown in the figure, Aruba Central and the Network Operations app offers the following services for the underlying infrastructure layer:
Management Services for managing WLAN devices—These services include the following options:
WLAN Services for managing and monitoring the WLAN setup as a whole. These services include the following options:
RFRadio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. data across the entire network, or a subset of the network, to algorithmically derive configuration changes for every Aruba AP on the network. The APs receive regular updates based on changing environmental conditions, which benefits both IT and users. AirMatch is the enhanced version of the Adaptive Radio Management (ARMAdaptive Radio Management. ARM dynamically monitors and adjusts the network to ensure that all users are allowed ready access. It enables full utilization of the available spectrum to support maximum number of users by intelligently choosing the best RF channel and transmit power for APs in their current RF environment. ) technology. It has new automated channel optimization, transmit power adjustment and channel width tuning system that utilizes dynamic machine learning intelligence to automatically generate the optimal view of the entire WLAN network.—AirMatch analyzes periodic
—The Unified Communications application on Aruba devices provides a seamless user experience for voice calls, video calls, and application sharing when using communication and collaboration tools. The Unified Communications application actively monitors voice, video, and application sharing sessions, provides traffic visibility and allows you to prioritize the sessions. The Unified Communications application also leverages the functions of the Service Engine on the cloud platform and provides rich visual metrics for analytical purposes.
bandBand refers to a specified range of frequencies of electromagnetic radiation. steering and load balancing of channels, and enhanced reassignment for roaming mobile clients. The ClientMatch service helps to improve the experience of wireless clients. ClientMatch identifies wireless clients that are not getting the required level of service at the AP to which they are currently associated and intelligently steers them to an AP radio that can provide better service and thereby improves user experience. ClientMatch periodically checks the health of current association of the clients and determines if a sticky steer or band steer should be considered.—ClientMatch continually monitors the RF neighborhood of the client to support the ongoing
AirGroupThe application that allows the end users to register their personal mobile devices on a local network and define a group of friends or associates who are allowed to share them. AirGroup is primarily designed for colleges and other institutions. AirGroup uses zero configuration networking to allow Apple mobile devices, such as the AirPrint wireless printer service and the AirPlay mirroring service, to communicate over a complex access network topology. capabilities are available as a feature in Aruba WLANs where Wi-Fi data is distributed among APs. AirGroup is a unique enterprise-class capability that leverages zero configuration networking to enable Bonjour® services like Apple® AirPrint and AirPlay from mobile devices in an efficient manner. Bonjour, the trade name for the zeroconf implementation introduced by Apple, is the most common example. Apple AirPlay and AirPrint services are based on the Bonjour protocol are essential services in campus Wi-Fi networks.—
802.11r802.11r is an IEEE standard for enabling seamless BSS transitions in a WLAN. 802.11r standard is also referred to as Fast BSS transition. fast transition and Opportunistic Key Caching (OKCOpportunistic Key Caching. OKC is a technique available for authentication between multiple APs in a network where those APs are under common administrative control. Using OKC, a station roaming to any AP in the network will not have to complete a full authentication exchange, but will instead just perform the 4-way handshake to establish transient encryption keys. ), to enable seamless roaming with minimal or no disruption to the application traffic such as voice and video.—The Cloud-Assisted Roaming Services feature supports
—With Rogues and Intrusion Detection, you can quickly identify and act on a rogue or interfering device that can be later considered for investigation, restrictive action, or both. After rogue devices are discovered, Aruba Central sends alerts to your network administrators about the possible threat and provides essential information needed to locate and manage the threat.
AOS 10.x form clusters in both homogeneous and heterogeneous modes. The IPsecInternet Protocol security. IPsec is a protocol suite for secure IP communications that authenticates and encrypts each IP packet in a communication session. between the AP and the Gateway cluster is orchestrated by the WLAN Tunnel Orchestration service. Even if one Gateway joins the deployment, an automatic cluster is formed by this service.— Gateways running
The management layer in the Aruba campus architecture with devices running AOS 10.x is called Aruba Central a SAAS . The Aruba Central platform can run on public, private, or hybrid clouds. AOS 10.x devices Aruba Central to provision, configure, monitor, and troubleshoot the WLAN setup.
AOS 10.x APs and to monitor the infrastructure layer.enables the onboarding of devices to the infrastructure layer. Along with device and network management functions, the SAAS platform also provides value-added services such as customized guest access, client presence, service assurance analytics and a number of apps for more network services. The app is one such app that is used to create the SSID workflows for