Concept Guide

253 | Adaptive Radio Management Dell Networking W-Series Instant 6.4.3.1-4.2.0.0 | User Guide
When the client match feature is enabled on a W-IAP, the W-IAP measures the RF health of its associated
clients. In the current release, the client match feature is supported only within a W-IAP cluster. If any of the
following trigger conditions is met, clients are moved from one AP to another for better performance and client
experience:
l Dynamic Load Balancing—Client match balances clients across W-IAPs on different channels, based on the
client load on the W-IAPs and the SNR levels the client detects from an underutilized W-IAP. If a W-IAP radio
can support additional clients, the W-IAP will participate in client match load balancing and clients can be
directed to that W-IAP radio, subject to the predefined SNR thresholds. For better load balancing, clients are
steered from busy channels to idle channels.
l Sticky Clients—The client match feature also helps mobile clients that tend to stay associated to a W-IAP
despite low signal levels. W-IAPs using client match continually monitor the client's RSSI as it roams between
W-IAPs, and move the client to a W-IAP when a better radio match can be found. This prevents mobile
clients from remaining associated to an APs with less than ideal RSSI, which can cause poor connectivity and
reduce performance for other clients associated with that W-IAP.
l Band Steering—W-IAPs using the client match feature monitor the RSSI for clients that advertise a dual-
band capability. If a client is currently associated to a 2.4 GHz radio and the AP detects that the client has a
good RSSI from the 5 GHz radio, the W-IAP steers the client to the 5 GHz radio, as long as the 5 GHz RSSI is
not significantly worse than the 2.4 GHz RSSI, and the W-IAP retains a suitable distribution of clients on
each of its radios.
l Channel Utilization—Based on the percentage of channel utilization, clients are steered from a busy channel
to an idle channel.
l Client Capability Match—Based on the client capability match, clients are steered to appropriate channel, for
example, HT20, HT40, or VHT80.
In the Instant 6.3.1.1-4.0 release, spectrum load balancing is integrated with the client match feature. Client
match allows the APs in a cluster to be divided into several logical AP RF neighborhood called domains, which
share the same clients. The Virtual Controller determines the distribution of clients and balances client load
across channels, regardless of whether the AP is responding to the probe requests of wireless clients.
You can configure client match parameters in Instant UI or CLI. When client match is enabled, the dashboard in
the main window displays the Client Match link on selecting an AP in the Access Points tab or a client in the
Clients tab. Clicking this link provides a graphical representation of radio map view of an AP and the client
distribution on an AP radio. For more information, see Client Match on page 67.
In the Instant UI
1. For client match configuration, specify the following parameters the RF>ARM >Show advanced options
tab: