Broadcast - Revision history

WikiSysop: Reverted edits by Yhorebapemy (Talk) to last version by Sandra

2010-11-18T10:11:47Z

Reverted edits by Yhorebapemy (Talk) to last version by Sandra

← Older revision		Revision as of 10:11, 18 November 2010
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	>== Broadcast ==		== Broadcast ==

	=== What is Broadcast ? ===		=== What is Broadcast ? ===
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	=== How does Broadcast differ from Multicast ? ===		=== How does Broadcast differ from Multicast ? ===
	[[Multicast]] is a ~~"~~group specific~~"~~ broadcast. Using special Addresses, a Multicast is not received by all host on the network, but only by those who are explicitely asking for it. Details in the [[Multicast]] article on this wiki.		[[Multicast]] is a "group specific" broadcast. Using special Addresses, a Multicast is not received by all host on the network, but only by those who are explicitely asking for it. Details in the [[Multicast]] article on this wiki.

	=== What is the Broadcast address ? ===		=== What is the Broadcast address ? ===
	To address a block to a device on the network, it either needs to be sent to the IP Address of the device, or sent as broadcast. For the broadcast, a specific IP Address is used, which is determined by setting all ~~"~~host~~"~~ bits in the IP address to ~~"~~1~~"~~, and using the same ~~"~~network~~"~~ part. For details on this, please check [[IP Address]] on this wiki.		To address a block to a device on the network, it either needs to be sent to the IP Address of the device, or sent as broadcast. For the broadcast, a specific IP Address is used, which is determined by setting all "host" bits in the IP address to "1", and using the same "network" part. For details on this, please check [[IP Address]] on this wiki.
	To determine the correct broadcast address, the correct netmask is '''crucial'''. With a wrong netmask, the calculated broadcast address will not match the network and is either sent as a direct block to one host or eventually considered to be on another network (and ignored by all hosts). Here is an example of how a broadcast address is determined:		To determine the correct broadcast address, the correct netmask is '''crucial'''. With a wrong netmask, the calculated broadcast address will not match the network and is either sent as a direct block to one host or eventually considered to be on another network (and ignored by all hosts). Here is an example of how a broadcast address is determined:
	192.168.001.010 - IP Address of the sender		192.168.001.010 - IP Address of the sender
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	=== Can I send a Broadcast to another network ?		=== Can I send a Broadcast to another network ?
	Generally, NO - a Broadcast is a function on a local network. Routers will generally not forward the broadcasts. Depending on the system configuration and routers used, there may be ONE special exception: the ~~"~~global~~"~~ broadcast address, which will be addressing all IP networks on the same lan. It is also used for applications such as getting an IP address by DHCP (when the network is not yet known). The global broadcast address is 255.255.255.255		Generally, NO - a Broadcast is a function on a local network. Routers will generally not forward the broadcasts. Depending on the system configuration and routers used, there may be ONE special exception: the "global" broadcast address, which will be addressing all IP networks on the same lan. It is also used for applications such as getting an IP address by DHCP (when the network is not yet known). The global broadcast address is 255.255.255.255
	However, do NOT expect a router to forward global broadcasts unless it is capable and configured to do so !		However, do NOT expect a router to forward global broadcasts unless it is capable and configured to do so !

	=== How can I send a block to a group of remote devices, then ? ===		=== How can I send a block to a group of remote devices, then ? ===
	Well ... Barix devices eventually (depending on firmware version and type) provide a ~~"~~rebroadcasting~~"~~ feature. IP Blocks sent to the device (for example, from a remote source), may be rebroadcasted on the local LAN by the network. This is exstreamely helpful to address many devices concurrently in a remote network without multiplying the packets to all destinations and clogging the links.		Well ... Barix devices eventually (depending on firmware version and type) provide a "rebroadcasting" feature. IP Blocks sent to the device (for example, from a remote source), may be rebroadcasted on the local LAN by the network. This is exstreamely helpful to address many devices concurrently in a remote network without multiplying the packets to all destinations and clogging the links.


	Back to [[FAQ]]		Back to [[FAQ]]

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	~~----~~
	~~=[http://emyrejivim.co.cc Under Construction! Please Visit Reserve Page. Page Will Be Available Shortly]=~~
	~~----~~
	~~=[http://emyrejivim.co.cc CLICK HERE]=~~
	~~----~~
	~~</div>~~

Yhorebapemy at 04:14, 18 November 2010

2010-11-18T04:14:30Z

← Older revision		Revision as of 04:14, 18 November 2010
Line 1:		Line 1:
	== Broadcast ==		>== Broadcast ==

	=== What is Broadcast ? ===		=== What is Broadcast ? ===
Line 5:		Line 5:

	=== How does Broadcast differ from Multicast ? ===		=== How does Broadcast differ from Multicast ? ===
	[[Multicast]] is a "group specific" broadcast. Using special Addresses, a Multicast is not received by all host on the network, but only by those who are explicitely asking for it. Details in the [[Multicast]] article on this wiki.		[[Multicast]] is a "group specific" broadcast. Using special Addresses, a Multicast is not received by all host on the network, but only by those who are explicitely asking for it. Details in the [[Multicast]] article on this wiki.

	=== What is the Broadcast address ? ===		=== What is the Broadcast address ? ===
	To address a block to a device on the network, it either needs to be sent to the IP Address of the device, or sent as broadcast. For the broadcast, a specific IP Address is used, which is determined by setting all "host" bits in the IP address to "1", and using the same "network" part. For details on this, please check [[IP Address]] on this wiki.		To address a block to a device on the network, it either needs to be sent to the IP Address of the device, or sent as broadcast. For the broadcast, a specific IP Address is used, which is determined by setting all "host" bits in the IP address to "1", and using the same "network" part. For details on this, please check [[IP Address]] on this wiki.
	To determine the correct broadcast address, the correct netmask is '''crucial'''. With a wrong netmask, the calculated broadcast address will not match the network and is either sent as a direct block to one host or eventually considered to be on another network (and ignored by all hosts). Here is an example of how a broadcast address is determined:		To determine the correct broadcast address, the correct netmask is '''crucial'''. With a wrong netmask, the calculated broadcast address will not match the network and is either sent as a direct block to one host or eventually considered to be on another network (and ignored by all hosts). Here is an example of how a broadcast address is determined:
	192.168.001.010 - IP Address of the sender		192.168.001.010 - IP Address of the sender
Line 16:		Line 16:

	=== Can I send a Broadcast to another network ?		=== Can I send a Broadcast to another network ?
	Generally, NO - a Broadcast is a function on a local network. Routers will generally not forward the broadcasts. Depending on the system configuration and routers used, there may be ONE special exception: the "global" broadcast address, which will be addressing all IP networks on the same lan. It is also used for applications such as getting an IP address by DHCP (when the network is not yet known). The global broadcast address is 255.255.255.255		Generally, NO - a Broadcast is a function on a local network. Routers will generally not forward the broadcasts. Depending on the system configuration and routers used, there may be ONE special exception: the "global" broadcast address, which will be addressing all IP networks on the same lan. It is also used for applications such as getting an IP address by DHCP (when the network is not yet known). The global broadcast address is 255.255.255.255
	However, do NOT expect a router to forward global broadcasts unless it is capable and configured to do so !		However, do NOT expect a router to forward global broadcasts unless it is capable and configured to do so !

	=== How can I send a block to a group of remote devices, then ? ===		=== How can I send a block to a group of remote devices, then ? ===
	Well ... Barix devices eventually (depending on firmware version and type) provide a "rebroadcasting" feature. IP Blocks sent to the device (for example, from a remote source), may be rebroadcasted on the local LAN by the network. This is exstreamely helpful to address many devices concurrently in a remote network without multiplying the packets to all destinations and clogging the links.		Well ... Barix devices eventually (depending on firmware version and type) provide a "rebroadcasting" feature. IP Blocks sent to the device (for example, from a remote source), may be rebroadcasted on the local LAN by the network. This is exstreamely helpful to address many devices concurrently in a remote network without multiplying the packets to all destinations and clogging the links.


	Back to [[FAQ]]		Back to [[FAQ]]

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			<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;">
			----
			=[http://emyrejivim.co.cc Under Construction! Please Visit Reserve Page. Page Will Be Available Shortly]=
			----
			=[http://emyrejivim.co.cc CLICK HERE]=
			----
			</div>

Sandra at 12:59, 20 March 2009

2009-03-20T12:59:29Z

← Older revision		Revision as of 12:59, 20 March 2009
Line 21:		Line 21:
	=== How can I send a block to a group of remote devices, then ? ===		=== How can I send a block to a group of remote devices, then ? ===
	Well ... Barix devices eventually (depending on firmware version and type) provide a "rebroadcasting" feature. IP Blocks sent to the device (for example, from a remote source), may be rebroadcasted on the local LAN by the network. This is exstreamely helpful to address many devices concurrently in a remote network without multiplying the packets to all destinations and clogging the links.		Well ... Barix devices eventually (depending on firmware version and type) provide a "rebroadcasting" feature. IP Blocks sent to the device (for example, from a remote source), may be rebroadcasted on the local LAN by the network. This is exstreamely helpful to address many devices concurrently in a remote network without multiplying the packets to all destinations and clogging the links.


			Back to [[FAQ]]

Jrietschel: New page: == Broadcast == === What is Broadcast ? === Broadcast is a method used on IP (and other) Networks to distribute a data block on the network to '''every''' connected device. Of course, a d...

2008-12-23T00:58:36Z

New page: == Broadcast == === What is Broadcast ? === Broadcast is a method used on IP (and other) Networks to distribute a data block on the network to '''every''' connected device. Of course, a d...

New page

== Broadcast ==

=== What is Broadcast ? ===
Broadcast is a method used on IP (and other) Networks to distribute a data block on the network to '''every''' connected device. Of course, a device may want to not process the block, it may have no application listening to the port the block is sent to, or it may be switched off - but generally, broadcasts are received by '''all''' hosts on the network

=== How does Broadcast differ from Multicast ? ===
[[Multicast]] is a "group specific" broadcast. Using special Addresses, a Multicast is *not* received by all host on the network, but only by those who are explicitely asking for it. Details in the [[Multicast]] article on this wiki.

=== What is the Broadcast address ? ===
To address a block to a device on the network, it either needs to be sent to the IP Address of the device, or sent as broadcast. For the broadcast, a specific IP Address is used, which is determined by setting all "host" bits in the IP address to "1", and using the same "network" part. For details on this, please check [[IP Address]] on this wiki.
To determine the correct broadcast address, the correct netmask is '''crucial'''. With a wrong netmask, the calculated broadcast address will not match the network and is either sent as a direct block to one host or eventually considered to be on another network (and ignored by all hosts). Here is an example of how a broadcast address is determined:
192.168.001.010 - IP Address of the sender
255.255.255.000 - Netmask
000.000.000.255 - all host bits to one
192.168.001.255 - calculated correct broadcast address

=== Can I send a Broadcast to another network ?
Generally, NO - a Broadcast is a function on a local network. Routers will generally not forward the broadcasts. Depending on the system configuration and routers used, there may be ONE special exception: the "global" broadcast address, which will be addressing all IP networks on the same lan. It is also used for applications such as getting an IP address by DHCP (when the network is not yet known). The global broadcast address is 255.255.255.255
However, do NOT expect a router to forward global broadcasts unless it is capable and configured to do so !

=== How can I send a block to a group of remote devices, then ? ===
Well ... Barix devices eventually (depending on firmware version and type) provide a "rebroadcasting" feature. IP Blocks sent to the device (for example, from a remote source), may be rebroadcasted on the local LAN by the network. This is exstreamely helpful to address many devices concurrently in a remote network without multiplying the packets to all destinations and clogging the links.