In computer networking, multicast is the delivery of a message or information to a group of destination computers simultaneously in a single transmission from the source. Copies are automatically created in other network elements, such as routers, but only when the topology of the network requires ...

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How DNS service discovery, multicast DNS and Bonjour are related?

I am a bit lost in the terminology. I wanted to start to use Bonjour. As the first step, I tried to find an easy way to use it. And I thought that I, probably, can call Bonjour from the command line ...
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4answers
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Multicast in Rackspace cloud

On Amazon EC2, I cannot use multicast, but how about rackspace cloud? It would be very beneficial to be able to use multicast as most clustering protocols rely on it...
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How common are dropped packets in communications within a data center?

Let's say I have 2 machines in the same data center but not necessarily in the same rack. How common would dropped packets be when sent using UDP between these two machines? I'm asking under the ...
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2answers
729 views

Can a TCP/IP be efficiently multicast among clients without UDP

I have a high bandwidth application in which a server is to be producing data a rate of ~300Mb/s on a gigabit network. Is there a way other than UDP to multicast to 1 to 10 clients through a reliable ...
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3answers
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Cisco multicast configuration

I'm on an isolated (for now) catalyst 3560e. I have a multicast source, which when enabled, causes flooding to all switch interfaces. I have a second different multicast source, which does not cause ...
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What are good host firewall rules to allow UDP multicast?

I have a system with a restrictive firewall that will be participating in UDP multicasting (sending and receiving). What's a good set of rules to make the host's firewall allow this? This is my ...
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Using Clonezilla Server Edition with multiple multicast restore operations

I run a computer refurbishing operation for a local non-profit I am a part of. I have been looking into using Clonezilla to do network-based image-restoration. I am very interested in the multicast ...
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3answers
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How to block all multicast traffic travelling through a Cisco Catalyst 3750

Something changed today. I can't seem to track down what, but one of our 3750s decided that it was going to forward all the multicast traffic it saw from the ghost server across every VLAN it has. I'...
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4answers
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Why does multicasting make the WAN inaccessible?

I'm hesitant to ask this question as I may not be able to perform the diagnostic steps to find out what is up, but: I need to re-image a lab in a school, possibly during school hours. I am using a ...
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1answer
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What affects multicast rates?

I'm experimenting the Trinity Rescue Kit (TRK) http://trinityhome.org/Home/index.php?wpid=1&front%5Fid=12 and it's ability to clone hard disks to many computers at one time using multicast ...
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1answer
897 views

Video-on-demand/surveillance server setup

I'm planning to set up a service that would allow people to connect their ip-cameras to and watch video embedded into a website. Scheduled saving and replaying would also be available. What hardware ...
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3answers
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DVMRP vs PIM-DM multicast protocols

Recently I've started to read RFCs of different multicast standards and came out to the question, which is not totally clear for me. I'm trying to compare DVMRP vs PIM-DM routing protocols in order to ...
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Most resilient form of (private) DNS clustering?

I'm working on a setup with two datacenters linked by a MAN (bridged) and everything is doubled between them, in fail-over mode with RedHat Cluster, DRBD and that kinf of things. I have one DNS ...
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Current IP Multicast reference materials [closed]

Can anyone recommend a textbook or online resource for learning the current state of multicast technology, from the perspective of a network engineer/designer? The 'bible' that most of my more ...