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View Full Version : General musings about Atheros, Routerboard, and StarOS


sligbot
04-14-2004, 08:53 AM
I don't know if anyone else has tried this but I'll outline what I've done and see if there is any feedback available.
We initially set up 2 StarOS boxes (500MHz+ systems) based on the Atheros chipset (5212 chipset). The cards we used were the Engenius/Senao SL-5354MP mini-pci cards with PCI adapters (RB-11 "Mini-PCI single Slot Adapter" from wisp-router). When we booted up the first machine and tried to test it with our current CPE (based on the Intersil 2.5 chipset) it did not associate properly (at 802.11b and g). Seeing that we had never used our CPE with an Atheros product, we took it as an incompatibility issue between the two chipset manufacturers (even at the 802.11b level) and went back to the factory to ensure proper compliance with 82.11b (as we thought that was where the problem was). We assumed this to be the problem because when we linked the two "clone" systems together, they were able to communicate through 802.11a/b/g (Atheros to Atheros).
We recently. changed the PCI interface from the RB-11 to Dlink products (DWL-AG520). Immediately we noticed that our CPE had no problem associating and passing traffic with the DWL-AG520. Although the 520 did not operate in 5GHz, that was fine with us as our CPE is a "b/g" CPE, not "a". That tweaked my interest and I began testing again with the RB-11 combo (mini-PCI to PCI adapter combo -- that is). Still no success and still the same problems -- with the exact software settings in StarOS. Something seemed a little fishy here.
I then decided to see if the problem lay in the RB-11 board. I upgraded my WRAP board to be Atheros-compliant, popped in a 5354 mini-pci card and "voila" -- our CPE associated and passed data fine with the WRAP board.
I now believe that the problem lies somewhere within the scope of compatibility of the RB-11 board and StarOS. Strangely enough, as I mentioned before, StarOS works fine with the RB-11 in some contexts (ie when I transmitted between 2 "cloned" systems) but not with my CPE. Not until I eliminated the RB-11 variable by either changing card types (to the Dlink type) or by changing form factors (to "pure" mini-pci in the WRAP board) did I have any idea that it could be anything else than a compatibility issue between StarOS and the RB-11.
Any thoughts or similar experiences by anyone that might be able to provide some clarity?

MerTech_Wes
04-14-2004, 09:29 AM
Interesting,

The only thing I've heard that remotely related to your problems is that the RB14 cannot accept 4 Atheros radio's when attached to a SBC/Motherboard that does not support multiple bus master devices (i.e. routerboard)

vera
04-18-2004, 11:29 AM
What processor was in your 500+MHz box? We tried to set up a VIA CL6000 motherboard box with Atheros radios and had many issues.

We finally discovered that the Atheros radios do not play well with VIA chipsets of any kind, which is too bad.

I wonder if the new Atheros 5004 chipset has corrected any of these issues?

George

bobbyc
04-18-2004, 12:33 PM
?
I've been using AG520 cards (pci 5002 cards) in the via 733 boards that valemount used to sell with no problems.
Bob C

vera
04-18-2004, 01:00 PM
I *believe* the problem comes in because of bios issues with using a two slot riser in the single pci slot in the mini-itx motherboards.

Our problems appear to happen when we put two radios in the box instead of only one. We've tried a couple different riser cards and same issues.

Evidently Atheros and VIA are aware of the problem and VIA thinks they have a new bios about ready to correct it. Hope so.


George

sligbot
04-19-2004, 06:57 AM
My "500+" system is the following:
Pentium(3) 533 with 128mb RAM.
I also tested it on another system:
AMD 1.6GHz system with 128mb RAM
Both systems had the same results -- incompatibility issues with my CPE's radio. As far as I can tell from checking the inner workings of my machines, they do not use VIA chips. I can check again and verify, though, just to be completely sure.

John Huszar
04-20-2004, 07:51 AM
So wait, did you use the RB11 with a riser card, or not?

John

sligbot
04-22-2004, 06:47 AM
No riser card used, not unless you consider the RB11 card a riser card, which I don't.

John Huszar
04-22-2004, 01:37 PM
According to what I can determine fro your post above, the problem lies in using the RB11?

Is that true?

John

sligbot
04-22-2004, 01:58 PM
That is my belief unless it can be shown otherwise. Just weird as how it works "sometimes" (with other Atheros cards) and not "othertimes" (with non-Atheros cards).
That is not to say that I won't ever use a RB11 again, just it's good to know when it works and when it doesn't.