BelAir100SN User Guide
Configuring Wi-Fi Access Point Parameters
May 31, 2010
Confidential
Document Number BDTM11001-A01 Released
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 51
•
“Broadcast to Unicast Packet Conversion” on page 97
Broadcast to
Unicast Packet
Conversion
/interface/wifi-<n>-<m>/set dhcp unicast {enable|disable}
/interface/wifi-<n>-<m>/set ssid <ssid_index>
dhcp-advanced {upstream-unicast | none}
Theses commands work together to let you control how the AP converts
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
set dhcp unicast
command:
• operates on all packets from a radio
• has precedence over the
set ssid <ssid_index> dhcp-advanced
command
• is disabled by default
The
set ssid <ssid_index> dhcp-advanced
command:
• operates on the packets of a particular SSID from a radio
• requires that the
set dhcp unicast
command be disabled before it is used
• requires that the
ssid_index
parameter be a valid SSID index. See
Service Set Identifiers” on page 92
• is set to
none
by default, meaning that it is disabled