Apple Bonjour, Wide-Area Bonjour and mDNS Questions

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Sep 17th, 2010
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Hi all


Firstly I've been playing with Cisco and Windoz for over 10 years and thought I knew a thing or two about networking. Recently I replaced all my Windoz machines with Apple OS X 10.6. Unfortunately for me none of my knowledge to date is on OS X and has proved to be none transferable.


  • The network is Multicast enabled with PIM-Space-Dense, MSDP Anycast RPs. There are no firewalls or active filtering.
  • The OS X servers are running Snow Leopard Server 10.6.4
  • The Clients are running Snow Leopard 10.6.4


The Problem:


I want to be able run Bonjour between subnets, separated by a routed core, to provide printer sharing.


I've read that Bonjour uses the Multicast group 224.0.0.251 on UDP port 5353. So I tried to 'ip forward-protocol udp 5353' but this did not work. I also tried 'ip directed-broadcast' with an ACL to match 224.0.0.251 and this did not work either. Then I remembered that addresses in the 224/8 range are specified as link local and should therefore have a TTL of 1 so routing between domains won't be possible?? Right??


So, I moved on to explore Wide-Area Bonjour with mDNS and found that this also uses the same 224.0.0.251:5353 address. I don't understand how this work or can I get it to work. I'm not sure I understand what is needed in the SVR DNS records.


Has anyone been able to get Bonjour services working between subnets?

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machilfe.ch Sat, 02/05/2011 - 12:41
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It's a very long time, since you did start this discussion.

Did you get any answers?

If so, could you let me know the outcome, as I have the same problems with my SA520W.


Regards and thank you for your replay.

Thomas

Shaun Bender Thu, 03/31/2011 - 16:11
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Hi,


I am starting to look more into this, as we have few second gen Apple TV's and would like to have our iPhones/iPads AirPlay to them. Of Course those devices are on different subnets.


I found guide:


Using Bonjour Across Subnets


http://www.grouplogic.com/Knowledge/PDFUpload/Info/WanBonjour_1.pdf


I'm still in the process of reading and researching, however if someone has found a better or easier solution, or has made a simple guide. Please let me know.


Thanks

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