3com WX2200 3CRWX220095A 사용자 설명서

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 | 

„

 — Service profile name.

„

 — Enables the no-broadcast mode. MAP radios are not 

allowed to send broadcast traffic to clients on the service profile’s 
SSID. 

„

 — 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.