BelAir20E User Guide
Configuring Wi-Fi Access Point Parameters
April 2, 2012
Confidential
Document Number BDTM02201-A01 Standard
Filtering
Broadcast and
Multicast Packets
/interface/wifi-<n>-<m>/set ssid <ssid_index>
group-address-filter {none | ipv4}
This command filters all broadcast and multicast packets to and from a wireless
client except for ARP and DHCP packets, allowing you to reduce the amount of
broadcast and multicast traffic in the network.
The
ssid_index
parameter must be a valid SSID index. See
Use the
none
setting to disable this function. Use
ipv4
to enable this function.
If wireless bridging is enabled, the default is
none
. If wireless bridging is disabled,
the default is
ipv4
.
See also:
•
“Limiting Broadcast Packets” on page 54
•
“Broadcast to Unicast Packet Conversion” on page 96
Broadcast to
Unicast Packet
Conversion
/interface/wifi-<n>-<m>/set ssid <ssid_index>
dhcp-advanced {upstream-unicast | none}
This command lets you convert broadcast packets to unicast packets. Reducing
the number of broadcast packets sent over wireless connections provides the
following benefits:
• Broadcast packet are not retried in wireless transmissions, so in high
interference environments wireless clients can miss their DHCP exchange.
• It reduces the bandwidth required for exchanges of DHCP messages.
The
ssid_index
parameter be a valid SSID index. See
.
The
set ssid <ssid_index> dhcp-advanced
command is set to
none
by default,
meaning that it is disabled. In this case:
• All BOOTP packets, including DHCP packets, coming from the client are
examined to determine if they are broadcast or unicast. This information is
stored for use when the response arrives.
• All BOOTP packets, including DHCP packets, arriving from the network are
examined. If needed, they are converted to match the format (broadcast or
unicast) sent by the wireless client.
When the
set ssid <ssid_index> dhcp-advanced
command is set to
upstream-unicast
, it unsets the Request Broadcast bit for BOOTP packets,