Re: [DLC]Multicast

Matthew,

What I am trying to do is just work with multicast from the bottom up.
 What happens when the application tries to listen to a multicast
address?  What does the linux do with the request?  What does the NIC
do once the application tries to join the multicast group?  The
switch?

I work in the finance industry and one of our clients is using a
custom developed multicast tool to do trading.  I want to make sure I
got a firm understanding of this in order to facilitate support.

Thanks,

Scott Behrens

On Mon, Mar 15, 2010 at 1:33 PM, Matthew P Kemp
<[email protected]> wrote:
> Scott,
>
>  I guess I am trying to understand what you are expecting from the
> kernel in regards to multi-casting?  A user space program joins a
> multi-cast group, and the appropriate information is sent to the user
> space program.  I have written a couple multi-cast applications for
> *nix and windows.  Do you have a specific problem you are trying to
> troubleshoot, or are you attempting to write a program?
>
> A couple of links:
>
> <http://andrew.triumf.ca/pub/linux/multicast-FAQ>
> <http://tldp.org/HOWTO/Multicast-HOWTO-6.html>
>
> --
> Matthew P Kemp
>
>
>
> On Mon, Mar 15, 2010 at 12:14 PM, Scott Behrens <[email protected]> wrote:
>> Guys,
>>
>> I'm doing general multicast research.  I'm hitting alot of roadblocks
>> and I'm not sure where to go for information.  Many of the articles I
>> have found our so outdated, that I don't know if the information is
>> relative anymore.  I really am trying to nail down on Linux when an
>> application tries to listen to a multicast address and what happens on
>> the kernel level.  If anyone has good information or even an answer to
>> that question please let me know.
>>
>> Thanks in advance,
>>
>> Scott Behrens
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