Mountain Lion >>> No backups

Check out this LINK: viewtopic.php?f=71&t=65411&p=387532#p387532

But here is the main point

If anyone gets issues with Time Machine and mountain line connecting.
I have tested with the following Hardware READNYAS ULTRA on 4.2.22 with Mountain Lion OSX 10.8.2 I was able to get Time Machine to connect to the Share (for 3 hours I didnt see the READYNAS on Timemachine on the Mac, everything was set right on the MAC and on the NAS). The Problem was that we had a Router in between a Layer 3 device blocking Bonjour Communication with the MAC PC. The trick was to connect directly into the PC or get a switch in between. The solution to all of you having issues not seeing the NAS is to:
(a) have bonjour Enabled and AFP was on - I forgot to check if we needed to have a connected session via AFP from the PC - but most likely not, it just needs bonjour
(b) dont have any layer 3 devices in between (routers, wifi from routers - isntead get an access point connected to a switch)
(c) plug directly into a switch or the pc with the readynas and it works
Bonjour is a layer 2 type of broadcast so it cant get past router and wifi from routers, or thru computers - anything layer 3 is bad for it.


What did not work:

INTERNET
|
Router--PC1
|
Readnyas

What worked - half of a solution:

$ and ~ meaning a wired or wifi connection (where wifi is on the router)

Internet
|
Router~~~~PC2(cant talk to the readynas via timemachine but with proper routes on the router and pcs you can get other things to work - thus not a good implimentation)
$
PC1(can talk to the readynas)
|
Readynas (now Readynas can only talk with PC1, if you had other pcs on the network connected to the router it wouldnt work because there would be at least 1 layer 3 device in between)

The above is only good if you need 1 computer to access the READYNAS (and no external access to the NAS via port forwards etc.). Timemachine will work great because there is 0 layer 3 devices in between.
If PC2 wanted to talk to the READYNAS time machine it wouldnt work because there is 2 layer 3 devices in between - the router and PC1


THE BEST IMPLENTATION HANDS DOWN:
need a router - the same one does fine, need a Switch, and for wireless need an Access Point (the wifi on the router is a layer 3 type of communication, we need to make it layer 2, access points are layer 2 wireless)

Remember Wifi on routers 99% of the time are layer 3 type of Wifi, and Accesspoint wireless is layer 2. The PC and routers are layer 3. Switches are Layer2. When I say READYNAS(layer3) to SWITCH(layer2) to PC(layer3) that is only a layer 2 device in between (the readynas is a layer 3 device and the PC is a layer 3 device, but they are not in between the communication stream so it doesnt hurt). Another good communication Stream READYNAS(layer3) to SWITCH(layer2) to ACCESS POINT(layer2) to PC(layer3) = this type of communication will work because there are only layer 2 devices in between :-) The layer 3 devices on the end points dont count. Remember its whats in between that matters.

Again to Recap:


bad: READYNAS-ROUTER-PC
bad: READYNAS-ROUTER-WIFI-PC
bad: READYNAS-ROUTER-SWITCH-PC
bad: READYNAS-ROUTER-ACCESSPOINT-PC

good: READYNAS - SWITCH - PC
good: READYNAS - SWITCH - ACCESS POINT - PC
good: READYNAS - PC

So with that here is the Best Solution:

INTERNET
|
ROUTER
|
SWITCH----Access point
|
|
READYNAS

PC1 and PC2 can connect wired to the Switch or wirelessly to the Access Point and everything will work, time machine will be found becuase bonjour will be discovered.

I hope this helps all of you having issues with NAS to Timemachine Device Not found issues.