Re: MAC Machines | Bonjour Protocol | OT

TCP on multicast addresses ?

I don't have any idea on bonjour, other than that the Ipod insist on
installing it in my desktop. But I would love to know a way to use TCP
on multicast... as I usually say that that can not be done.

-Carlos

Samer Labaky @ 25/11/2009 5:02 -0300 dixit:
> Hi Scott,
>
> Thank you a lot for your reply.
>
> In the multicast to broadcast conversion you have to specify the ip
> forward-protocol udp X but in the bonjour we have TCP 5297 for example
> What can we do ?
>
> Thanks for your help
> Samer
>
> -----Original Message-----
> From: Scott Morris [mailto:smorris_at_ine.com]
> Sent: Tuesday, November 24, 2009 3:44 PM
> To: Samer Labaky
> Cc: alexeim73_at_gmail.com; Keegan.Holley_at_sungard.com; Cisco certification;
> nobody_at_groupstudy.com; Rick Mur
> Subject: Re: MAC Machines | Bonjour Protocol | OT
>
> You COULD use the multicast --> broadcast (or unicast) conversion
> process... I believe the term in documentation is Multicast
> Intermmediate Helper Address or something that.
>
> Not pretty, but functional. Bonjour is a kinda chatty protocol you may
> not really want floating around your larger network (or vlan for that
> matter). Just my opinion.
>
>
>
>
> *Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,
>
> JNCIE-M #153, JNCIS-ER, CISSP, et al.
>
> JNCI-M, JNCI-ER
>
> evil_at_ine.com
>
>
> Internetwork Expert, Inc.
>
> http://www.InternetworkExpert.com
>
> Toll Free: 877-224-8987
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> Study hard and be Eeeeviiiil......
>
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>
>
> Samer Labaky wrote:
>> Thank you a lot,
>>
>> so no way to make it work without this software solution ?
>>
>> Can we buy it ?
>>
>> Is there any official document on the internet saying that this cannot
>> work.
>>
>> I need to convince my client by something on the internet.
>>
>> Thank you a lot guys for your support.
>> Samer
>>
>>
>>
>>
>> -----Original Message-----
>> From: Alexei Monastyrnyi [mailto:alexeim73_at_gmail.com]
>> Sent: Monday, November 23, 2009 11:51 AM
>> To: Keegan.Holley_at_sungard.com
>> Cc: Samer Labaky; Cisco certification; nobody_at_groupstudy.com; Rick Mur
>> Subject: Re: MAC Machines | Bonjour Protocol | OT
>>
>> There is a custom solution to this issue, unfortunately not available
>> for public use. I have just checked with the authors, they have
> embedded
>> that into their software solution for stock trading. Essentially it
>> tunnels via TCP whatever is on that group 224.0.0.251. This runs in
> form
>> of Windows service or Unix daemon (currently on OSX, Solaris and
> Linux)
>> and quite a complex application in itself, capable of intercepting
>> Bonjour requests, tunneling, conditionally multicasting them into a
>> destination segment etc etc.
>>
>> Not sure if it helps. ;-) It is amazing however which ways people take
>
>> to make things working. They once hit the problem and just developed a
>
>> solution in a matter of week. :-)
>>
>> Cheers,
>> A.
>>
>> Keegan.Holley_at_sungard.com wrote:
>>
>>> That you'd have to look up... I sniffed it and multicast dns
>>>
>> definitely
>>
>>> uses a link local address (224.0.0.251) so it can't be routed. The
>>>
>> easy
>>
>>> way would be to put the hosts back in the same vlan and just leave
>>>
>> them in
>>
>>> different IP subnets. I'm not sure if this would break something
> else
>>>
>>
>>> though. Private vlans also come to mind, but that somehow seems like
>
>>> overkill.
>>>
>>>
>>>
>>> From:
>>> Samer Labaky <samer.labaky_at_bmbgroup.com>
>>> To:
>>> "Rick Mur" <rmur_at_ipexpert.com>, <Keegan.Holley_at_sungard.com>
>>> Cc:
>>> "Cisco certification" <ccielab_at_groupstudy.com>,
>>>
>> <nobody_at_groupstudy.com>
>>
>>> Date:
>>> 11/23/2009 02:08 AM
>>> Subject:
>>> RE: MAC Machines | Bonjour Protocol | OT
>>> Sent by:
>>> <nobody_at_groupstudy.com>
>>>
>>>
>>>
>>> Thank you all for your reply,
>>>
>>> So what can be done in order to make these MAC hosts communicate
>>> together across VLANs ?
>>>
>>> Is there any official website saying that they cannot work ?
>>>
>>> My client needs it and is not stopping asking me about it :)
>>>
>>> Help guys
>>>
>>> Thank you
>>> Samer
>>>
>>> -----Original Message-----
>>> From: Rick Mur [mailto:rmur_at_ipexpert.com]
>>> Sent: Monday, November 23, 2009 8:54 AM
>>> To: Keegan.Holley_at_sungard.com
>>> Cc: Samer Labaky; Cisco certification; nobody_at_groupstudy.com
>>> Subject: Re: MAC Machines | Bonjour Protocol | OT
>>>
>>> I'm also not aware that this can work with multicast routing. You
> also
>>> have an issue with IGMP Snooping as it doesn't do IGMP, so on a
> switch
>>> where this is enabled it will not work.
>>>
>>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net