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Speeds on live network
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bconverse
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PostPosted: Mon Mar 01, 2010 7:20 pm    Post subject: Reply with quote

Quote:
Has anyone compared mesh speeds between Meraki and open mesh lately?

that should be VERY interesting indeed ![/quote]

Anaptyx should know as they have a lot of Meraki networks.
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Antonio (isleman)
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PostPosted: Mon Mar 01, 2010 7:32 pm    Post subject: Reply with quote

wait!

Meraki Vs Robin is an exciting battle (http://www.merakeye.com/forum/ had a similar post showing Robin supremacy) BUT the real comparison could be:
Meraki-HW_running_Meraky-SW Vs Meraki-HW_running_Robin
in the same location...

your thoughts ?
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bconverse
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PostPosted: Mon Mar 01, 2010 7:39 pm    Post subject: Reply with quote

Would certainly be interesting, but regardless of the outcome there a a host of reasons why I would not return to Meraki.
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mtlowes
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PostPosted: Mon Mar 01, 2010 9:38 pm    Post subject: Reply with quote

Just wondering if we can learn something from this as a method to increase speeds on existing hardware.. UBNT being the example in this case with the new AIRMAX units.

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black6spdz
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PostPosted: Tue Mar 02, 2010 4:30 pm    Post subject: Reply with quote

dashboard speed indicates LAN throughput correct? In that case I see average of about 2.7Mbps with it set to 5.5Mbps fixed rate and ~7-9Mbps on auto. Would it be a fair assumption that the wireless rate is upwards of 18Mbps?
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phred
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PostPosted: Tue Mar 02, 2010 6:16 pm    Post subject: Reply with quote

I haven't tested the speed over the mesh for Meraki units, but I can say that ROBIN is at least 25% faster on gateway nodes than Meraki units (12 megabits for ROBIN vs 8 for meraki).

I was running a Meraki outdoor unit to my LAN network for a while just for kicks, but it started getting massive packet loss, and I had to relegate it to the dumpster. Looks like they did an update which fragged a lot of the older units.

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Silver Lining Networks is development contributor to the ROBIN firmware
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phred
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PostPosted: Tue Mar 02, 2010 6:21 pm    Post subject: Reply with quote

Quote:
OLSR inherits the use of link state algorithm, using shortest path first forwarding, it always provides the best path in term of number of hops, hence the "star topology" that you see. Larger networks with sparse nodes do not have that behavior (http://map.berlin.freifunk.net/).


I don't think that is entirely correct. OLSR chooses the link path that has the lowest amount of packet loss. So over short distances, my EOC-1650 gateway will be chosen over the Pico2HP because of the high packet loss on the Pico2HP at that short distance.

Longer hops will pick the Pico2HP preferentially over the EOC-1650 because the packet loss is higher on the EOC-1650 at longer range. It took me a while to figure this one out - I thought the Pico2HP was a dud, but turned out that it just has a longer optimal range than the other units, and performs poorly at short ranges.

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foxtroop11
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PostPosted: Tue Mar 02, 2010 7:15 pm    Post subject: Reply with quote

Madwifi has the ability to fine tune distance settings, however I think all nodes would need the same settings. By default robin is not applying the distance settings, but with some fine tuning anyone could get in there and potentially get some differnet results.
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black6spdz
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PostPosted: Wed Mar 10, 2010 6:06 am    Post subject: Reply with quote

just digging through madwifi document.. if anyone knows the answers please chime in

XR mode is disabled by default:
root@P2HP-TEST:~# iwpriv ath0 get_xr
ath0 get_xr:0
couldn't this help?
AR5006AP-G "AR2315" supports Extended Range support
"XR is a feature that provides better coverage for wireless networks. This is achieved by increasing the receiver sensitivity to (up to) -105dBm, which is about 20dB above what the 802.11 specifications demand"


mode is sset to 11g by default:
root@P2HP-TEST:~# iwpriv ath0 get_mode
ath0 get_mode:11g
why not 11gdt/11gt mode to use atheros dynamic turbo mode? "108Mbps"

here are the results from inquiry on cwmin values:
root@P2HP-TEST:~# iwpriv ath0 get_cwmin 0 0
ath0 get_cwmin:3
root@P2HP-TEST:~# iwpriv ath0 get_cwmin 1 0
ath0 get_cwmin:4
root@P2HP-TEST:~# iwpriv ath0 get_cwmin 2 0
ath0 get_cwmin:3
root@P2HP-TEST:~# iwpriv ath0 get_cwmin 3 0
ath0 get_cwmin:2
root@P2HP-TEST:~# iwpriv ath0 get_cwmin 0 1
ath0 get_cwmin:3
root@P2HP-TEST:~# iwpriv ath0 get_cwmin 1 1
ath0 get_cwmin:4
root@P2HP-TEST:~# iwpriv ath0 get_cwmin 2 1
ath0 get_cwmin:3
root@P2HP-TEST:~# iwpriv ath0 get_cwmin 3 1
ath0 get_cwmin:2
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foxtroop11
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PostPosted: Wed Mar 10, 2010 7:53 am    Post subject: Reply with quote

Running those commands is not going to do anything on hardware that does not have the supported features. Most of those features are in high performance mini-pci cards, not sure if any of the equipment offered by OM has it.

The main thing your missing on super/turbo mode is the fact madwifi supports only static 5ghz turbo mode. The stuff you pasted on XR should have been followed by the statement saying's "known only to work with station mode", don't think it applies to ah-demo.
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black6spdz
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PostPosted: Wed Mar 10, 2010 8:39 am    Post subject: Reply with quote

dd-wrt shows it "p2hp" supporting 40Mhz channel width, Super G Fast Framing, and extended range.
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foxtroop11
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PostPosted: Wed Mar 10, 2010 9:48 am    Post subject: Reply with quote

Keyword being "dd-wrt". They have a much differnet madwifi driver then OpenWRT and last I checked may allow super/turbo in 2.4ghz. The people over there have a highly refined, hence the typical activation fee on firmware, madwifi driver that does enable far more abilities in the hal then what openwrt has access to. I'm sure the device supports the feature's, but there is always that one thing preventing everything from working Smile
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black6spdz
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PostPosted: Wed Mar 10, 2010 6:49 pm    Post subject: Reply with quote

oh.. I see, makes sense.. guess it wouldn't hurt to enable a few things on some test radios and do my own testing
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