broadcast address


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broadcast address

An address that enables transmission to every node in a local network. The address is the highest numeric value of the address format being used. An Ethernet broadcast address is all binary 1's. An IP broadcast address is the highest number in its class; for example, the broadcast address of a Class C 192.168.16.0 network is 192.168.16.255.

Subnet Broadcast Addresses
The broadcast address for a subnet must account for the part of the address that is reserved for the subnet. Using the above Class C example configured for six subnets would have a broadcast address of 192.168.16.31. It is derived as follows. For more on the Class C example, see subnet mask. See broadcast and multicast.
Class C Mask for Six Subnets  255      255      255    224
 11111111.11111111.11111111.11100000

 Step 1Invert the mask.0        0        0           31
 00000000.00000000.00000000.00011111

 Step 2OR the inverted mask with an IPaddress in the subnet, such as192.168.16.1. 192       168        16           1
 11000000.10101000.00010000.00000001 
 00000000.00000000.00000000.00011111
 -----------------------------------
 11000000.10101000.00010000.00011111
 192       168        16          31
References in periodicals archive ?
The address, made up of 48 1-bits, is the broadcast address for Ethernet.
This was a great victory for the government," Correa said in a nationally broadcast address from the presidential palace on Saturday.
President Rene Preval has made no broadcast address to his nation, nor has he been seen at any disaster site.
In a radio broadcast address to a huge gathering during the inauguration of Wau's new diesel power station, Kiir said that he suspects an unobserved agenda influencing the delay in releasing the results of Sudan's fifth housing and population census.
In a nationally broadcast address yesterday, Singh said "the well-planned and well-orchestrated attacks, probably with external linkages, were intended to create a sense of panic, by choosing high profile targets and indiscriminately killing foreigners.
The most important thing now is to protect lives," President Vicente Fox said in a broadcast address to the nation.
It marks the end of the road for him and all who killed and bullied in his name,' Bush said in a nationally broadcast address from the Cabinet Room.
The Cuban government, out of a basic feeling of dignity, rejects any humanitarian aid, or remaining aid, that may be offered by the governments of the European Union," Castro said in the nationally broadcast address.