WLAN Settings

The required and recommended WLAN settings and values are listed in this topic.

The following table displays the required WLAN settings.

Setting Required Value
Voice Grade Site Survey Required
B3000 Transmit Power (2.4 GHz)

Max 15dBm (30 mW)—Min 11 dBm (12.5 mW)

B3000n Transmit Power (2.4 GHz)1 Max 17dBm (50 mW)—Min 12dBm (16 mW)
B3000n Transmit Power (5 GHz)

Max 16 dBm (40 mW)—Min 13 dBm (20 mW)

Minimum Power Coverage

-65 dBm

Minimum SNR + 25 dB
Noise Floor - 90dB
Beacon Interval

100

DTIM

1

Priority Queue

Highest—Voice

Radio Channel Utilization 30%
Channel Width
  • 2.4 GHz—20 MHz
  • 5 GHz—20 MHz or 40 MHz

The following table displays the recommended WLAN settings.

Settings Recommendations
Code Version Vocera recommends that you use the most recent version of Controller and AP code with an assumption that code version is accurate.
Basic Data Rate Data Rates Determine the rate as needed for each site.
Supported Data Rates Determine the rate as needed for each site.

Channel Plan

  • 2.4 GHz—1, 6, 11
  • 5 GHz—36, 40, 44, 48, 149, 153, 157, 1612
Note: Avoid channels 120, 124, 144 if possible. Monitor DFS channels near an airport. If you are using DFS channels, broadcast the SSID in beacons for B3000n benefit.
Roaming Policy 2—May adjust based on AP density.
Max Number of SSIDs 5
Client Exclusions

Disabled
Authentication Timeouts Add session timeout of at least 1 full shift.
DHCP Disabled
Max Retries 4

5 GHz Channels in badge.properties (B3N.ChannelsToScan5G)

Must match 5 GHz channels enabled in the controller.

The following table displays the multicast recommendations.

Setting Recommended Value
IGMP on Badge Enabled
IGMP V2 on Network Enabled

Multicast Configuration

  • PIM (Sparse Mode or Sparse Dense Mode) must be applied to all Vocera VLANs and the WLC management VLAN.
  • Enable IGMP Snooping on APs and all L2 devices in the multicast audio path.
  • Block all unnecessary multicast traffic.

The following table displays the association delays caused by authentication.

Authentication Type Association Delay Comments
Encrypted Varies Avoid using the options WEP, TKIP, and Mixed.
PSK < 100 ms PSK often provides the optimal trade-off between security and performance.

EAP-FAST

LEAP

200 ms Frequent session timeouts can result in additional delays.
Note: For EAP-FAST and LEAP, use CCKM, OKC, and 802.11r to cache credentials and optimize roaming times.

PEAP

EAP-TLS

Varies

The association delay caused by authentication varies based on the cipher strength (1024 bit or 2048 bit) and the depth of certificate chains.

Note: For EAP-TLS and PEAP, use CCKM, OKC, and 802.11r to cache credentials and optimize roaming times.