Re: MAC Machines | Bonjour Protocol | OT

Yea I'll start testing it in the lab now. Can you send me two macbook pro
laptops and a 3560's and maybe an iPod touch? Reply offlist and I'll send
you my address

;)

From:
Darren <darren_at_dnsl.com>
To:
Scott Morris <smorris_at_ine.com>
Cc:
Samer Labaky <samer.labaky_at_bmbgroup.com>, alexeim73_at_gmail.com,
Keegan.Holley_at_sungard.com, Cisco certification <ccielab_at_groupstudy.com>,
nobody_at_groupstudy.com, Rick Mur <rmur_at_ipexpert.com>
Date:
11/24/2009 11:19 AM
Subject:
Re: MAC Machines | Bonjour Protocol | OT
Sent by:
<nobody_at_groupstudy.com>

I believe that although the initial discovery packets are multicast
the reply's are unicast, and OSX will ignore packets that don't match
the interface subnet as per the RFC for mDNS (I believe its to do with
auto discovery and security issue). So maybe helper-map's plus some
funky NAT :).....

I've started to look at wide-area, but looks like most of the tools to
set this up are with "OSX server" and not desktop, looks like its
possible though, and it doesn't have to be a public dns. you can be
your own DNS and keep everything firewall'd off. If anybody gets WA
working let us know.....

D

On Tue, Nov 24, 2009 at 9:44 PM, Scott Morris <smorris_at_ine.com> wrote:
> 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
>
> Outside US: 775-826-4344
>
>
> Knowledge is power.
>
> Power corrupts.
>
> Study hard and be Eeeeviiiil......
>
>
>
>
>
> 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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Received on Tue Nov 24 2009 - 13:08:38 ART