Re: [DLC]Multicast

I should note I have a more firm understanding from the Switch level.

On Mon, Mar 15, 2010 at 1:40 PM, Scott Behrens <[email protected]> wrote:
> 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 have found our so outdated, that I don't know if the information is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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