Chapter 1 Preparing for a WLAN Deployment
14
Aerohive
A
SSESSING
Y
OUR
R
EQUIREMENTS
To get started with your Aerohive WLAN installation, examine the basic requirements of your implementation. First,
consider who your stakeholders are and take the time to fully understand their access requirements. Talk to
department managers within your organization and make sure everyone has documented the full complement of
potential users of your network. Check if the applications are standard employee applications or if there are other
requirements, such as access for guests or consultants.
Next, make a complete list of the application types that your Aerohive network will need to support. Begin your list
with mission-critical applications, paying special attention to those that generate high levels of traffic and those
requiring deterministic behavior. Identify applications with heavy data requirements and expected service levels.
Demanding applications such as voice and video will require a higher density of access points. Many enterprises are
investigating the potential of VoWLAN (Voice over WLAN) in the hopes of integrating mobile phones and IP-PBX
systems. Doing so requires an evaluation of other data transmission types that can disrupt the quality of voice
conversations. Because voice traffic is sensitive to network jitter and latency, an inadequate number of access
points can degrade quality. To the user, excessive jitter and delay can cause clipped conversations or dropped calls.
Additional quality and reliability issues might arise when transmitting video, such as for training video or
surveillance operations, because of the sheer size of the data stream.
Other applications such as network backup and file transfers can also have an impact on the network. Therefore,
take into account any bandwidth-intensive applications if you expect your mobile workforce to be accessing the
WLAN while these applications or services are occurring.
Considering the above issues will result in a more informed—and therefore more successful—deployment plan.
P
LANNING
This section reviews the fundamental elements for planning your WLAN deployment. This includes conducting a site
survey, both for an upgrade from an existing WLAN and for a completely fresh—or greenfield—deployment.
Upgrading from Existing Wi-Fi
If you are upgrading to Aerohive from an existing WLAN, you already have plenty of data about how your current
network is performing. This information can lead to more informed decisions about your new implementation.
To begin, perform a quick site survey with the existing access points in place. If they are less than three years old
and support 802.11g, their coverage and capacity will be lower than the Aerohive 802.11n radio. If the coverage is
good and has the appropriate density for your deployment, the simplest approach is to replace one set of access
points with a new set of HiveAPs. However, this scenario is rare because network upgrades are usually done to
improve capacity and to augment the existing layout with a denser deployment of access points.
Be sure to take note whether your existing network uses "fat" or "thin" APs (access points). A "fat" AP is an
autonomous or standalone access point, which contains the capability to connect to any Ethernet switch. With a
"thin" AP, most of the intelligence has been removed and replaced in a centralized WAN controller. An upgrade from
fat APs to Aerohive HiveAPs is very natural. Generally, with fat APs you simply need to unplug the existing ones and
plug in the new HiveAPs and provision them. With this approach, you can maintain or enhance all existing VLANs and
security policies. This is a huge advantage over migrating from fat AP to controller-based solutions because you
typically need to re-architect the network.
Содержание access point
Страница 1: ...Aerohive Deployment Guide ...
Страница 7: ...HiveAP Compliance Information 6 Aerohive ...
Страница 13: ...Contents 12 Aerohive ...
Страница 37: ...Chapter 2 The HiveAP 20 ag Platform 36 Aerohive ...
Страница 71: ...Chapter 4 The HiveAP 340 Platform 70 Aerohive ...
Страница 81: ...Chapter 5 The HiveAP 320 Platform 80 Aerohive ...
Страница 105: ...Chapter 8 The High Capacity HiveManager Platform 104 Aerohive ...
Страница 123: ...Chapter 10 Using HiveManager 122 Aerohive ...
Страница 209: ...Chapter 14 Deployment Examples CLI 208 Aerohive ...
Страница 217: ...Appenidix A Country Codes 216 Aerohive ...