3Com WXR100 3CRWXR10095A - Manual (Page 499)

set service-profile no-broadcast 499
set service-profile
no-broadcast Disables or reenables the no-broadcast mode. The no-broadcast mode
helps reduce traffic overhead on an SSID by having more SSID bandwidth
available for unicast traffic. The no-broadcast mode also helps VoIP
handsets conserve power by reducing the amount of broadcast traffic
sent to the phones.
When enabled, the no-broadcast mode prevents MAP radios from
sending DHCP or ARP broadcasts to clients on the service profile’s SSID.
Instead, a MAP radio handles this traffic as follows:
„
ARP requests—If the SSID has clients with IP addresses that the WX
does not already know, the WX allows the MAP radio to send the ARP
request as a unicast to only those stations whose addresses the WX
does not know. The MAP radio does not forward the ARP request as a
broadcast and does not send the request as a unicast to stations
whose addresses the WX already knows.
„
DHCP Offers or Acks—If the destination MAC address belongs to a
client on the SSID, the MAP radio sends the DHCP Offer or Ack as a
unicast to that client only.
The no-broadcast mode does not affect other types of broadcast traffic
and does not prevent clients from sending broadcasts.
Syntax — set service-profile name no-broadcast {enable |
disable}
„ name — Service profile name.
„ enable — Enables the no-broadcast mode. MAP radios are not
allowed to send broadcast traffic to clients on the service profile’s
SSID.
„ disable — Disables the no-broadcast mode.
Defaults — The no-broadcast mode is disabled by default. (Broadcast
traffic not disabled.)
Access — Enabled.
History —Introduced in MSS Version 4.2.
Usage — To further reduce ARP traffic on a service profile, use the set
service-profile proxy-arp command to enable Proxy ARP.