Welch Allyn Connex and Acuity Network Installation Best Practices , User Manual - Installation Guide - Manual (Page 14)

10 Acuity Welch Allyn Network installation
Aruba controller requirements
Best practice Affected types Without best practice
Advanced Radio Management (ARM) settings:
•
Power save aware scan = enabled.
• VOIP aware = enabled
• Scan interval = 180 seconds
1
1. Aruba 6.2 and later: adjustable via CLI only, see rf armprofile command.
Wireless APs perform ARM scanning at the time when PSP clients
are scheduled to send data, resulting in lost data.
Authentication/Encryption EAP-TLS, WPA2-PSK Wireless Other encryption methods not supported. No connectivity.
Channel advertisement Advertise 802.11h capability
(Broadcast SSID). Wireless Decreased number of 802.11a channels available. If APs
are on channels that require 802.11h capability, they will
not be available to patient monitors, resulting in RF
coverage holes.
Channel Switch Announcement (CSA) Disable. Wireless When CSA is enabled, data loss when changing channels
may occur.
Client Match Disable Wireless Increased probability of disconnects and roams in busy
regions of network.
Controller redundancy Aruba controller hardware should
include controller redundancy, either one to one or one to many
(1:1 or N:1). Wireless Failure of a non-redundant controller would cause the
entire system to fail.
Data Keep patient telemetry data and general IT data separated
using a Stateful Firewall. Acuity rules, policies, and roles should
be separated from rules, policies, and rules used for other IT
data. Wired, wireless IT changes to the firewall policies that inadvertently
affect patient monitoring are more likely. Patient data
subject to issues on wired network such as broadcast
storms. Shorter battery life for patient monitors.
Fast roaming/multi-association Disabled. Wireless Dropped packets during patient monitor movement.
Firmware version Use Welch Allyn-validated versions of the
Aruba Operating System: Wireless Using a non-validated version of firmware may induce
data loss.
• 3.2.0.1-WA1
• 3.3.1.19
• 3.3.2.10
• 3.3.2.18
• 5.0.3.3
• 6.1.2.7
• 6.2.1.2
• 6.3.1.6
Supported hardware versions • Wireless Using non-validated hardware may cause data loss.
• 800
• 2400
• 5000
• 6000
• SC1
• SC2
• 620
• 650
• 3200
• 3400
• 3600
• 7200
• MK3(5000)
• MK3(6000)
• AP60
• AP61
• AP65
• AP70*
• AP92
• AP105
• AP125
• AP135
*AP70 only validated for versions prior to 5.0.3.3
Opportunistic Key Caching (OKC) Enabled. Wireless Dropped packets during patient monitor movement.
Quality of Service (QOS) Wireless/Wired LAN shall support
Welch Allyn patient data with AC_VO (Access Category Voice). Wired, wireless Increased data loss for patient data.