Product and Software: This article applies to ArubaOS 3.3 and later.
When the Voice Services Module (VSM) license is installed, the "drop-mcast" option is configurable under the ssid profile.
This function is useful in these environments:
- High number of clients in a large subnet.
- Clients renew DHCP when they are roaming every time.
- Battery capacity of the clients is limited.
- Clients do not use any broadcast-based protocols (for example, Windows Share).
When the "drop-mcast" option is enabled, all the unknown broadcast and multicast traffics egressing from the Access Point (AP) are dropped. You need to enable the "voip-proxy-arp" option for the "drop-mcast" option to work.
When this feature is enabled, downstream DHCP and ARP broadcast packets are automatically converted to unicast and forwarded to the valid client.
To enable the "voip-proxy-arp" option from the command line interface (CLI)
To enable the "drop-mcast" option:
wlan ssid-profile <Name> drop-mcast