Concept Guide

Parameters Description
Broadcast/Multicast
Select any of the following values under Broadcast filtering:
l All—When set to All, the W-IAP drops all broadcast and multicast frames
except DHCP and ARP, IGMP group queries, and IPv6 neighbor discovery
protocols.
l ARP—When set to ARP, the W-IAP drops all broadcast and multicast
frames except DHCP and ARP, IGMP group queries, and IPv6 neighbor
discovery protocols and additionally converts ARP requests to unicast and
send frames directly to the associated client.
l Disabled— When set to Disabled, all broadcast and multicast traffic is
forwarded to the wireless interfaces.
DTIM interval
The DTIM interval indicates the delivery traffic indication message (DTIM)
period in beacons, which can be configured for every WLAN SSIDprofile. The
DTIMinterval determines how often the W-IAP should deliver the buffered
broadcast and multicast frames to associated clients in the powersave mode.
The default value is 1, which means the client checks for buffered data on the
W-IAP at every beacon. You can also configure a higher DTIM value for power
saving.
Multicast transmission
optimization
Select Enabled if you want the W-IAP to select the optimal rate for sending
broadcast and multicast frames based on the lowest of unicast rates across all
associated clients. When this option is enabled, multicast traffic can be sent at
up to 24 Mbps. The default rate for sending frames for 2.4 GHz is 1 Mbps and
5.0 GHz is 6 Mbps. This option is disabled by default.
Dynamic multicast optimization
Select Enabled to allow W-IAP to convert multicast streams into unicast
streams over the wireless link. Enabling Dynamic Multicast Optimization
(DMO) enhances the quality and reliability of streaming video, while
preserving the bandwidth available to the non-video clients.
DMO channel utilization threshold
Specify a value to set a threshold for DMO channel utilization. With DMO, the
W-IAP converts multicast streams into unicast streams as long as the channel
utilization does not exceed this threshold. The default value is 90% and the
maximum threshold value is 100%. When the threshold is reached or exceeds
the maximum value, the W-IAP sends multicast traffic over the wireless link.
NOTE: When you enable DMO on multicast SSID profiles, ensure that the
DMO feature is enabled on all SSIDs configured in the same VLAN.
Transmit Rates
Specify the following parameters:
l 2.4 GHz—If the 2.4 GHz band is configured on the W-IAP, specify the
minimum and maximum transmission rate. The default value for minimum
transmission rate is 1 Mbps and maximum transmission rate is 54 Mbps.
l 5 GHz—If the 5 GHz band is configured on the W-IAP, specify the minimum
and maximum transmission rate. The default value for minimum
transmission rate is 6 Mbps and maximum transmission rate is 54 Mbps.
Table 23: WLAS SSID Configuration Parameters for Guest Network
Dell Networking W-Series Instant 6.4.3.1-4.2.0.0 | User Guide Captive Portal for Guest Access | 129