hello,
i have 2 Sextants deployed 1.5 kms apart. they are running ROS 6.27 connected with NV2
somehow i just cannot achieve file copy speeds above 5MB/s from machine to machine. the througput in ROS is seen at 120/120 and does not climb above that.
even IPERF shows the Transfer speeds at 32.1MBytes and Bandwidth at 26.8 MBits/sec.
any help will be highly appreciated.
my AP side wireless export
[admin@U-BRG] > interface wireless print advanced
Flags: X - disabled, R - running
0 R name="wlan1" mtu=1500 mac-address=00:0C:42:6F:03:2B arp=enabled disable-running-check=no interface-type=Atheros AR9300 radio-name="000C426F032B" mode=bridge
ssid="WAVE" area="" frequency-mode=manual-txpower country=no_country_set antenna-gain=0 frequency=5260 band=5ghz-a/n channel-width=20/40mhz-ht-above
scan-list=default wireless-protocol=nv2 rate-set=default supported-rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps basic-rates-a/g=6Mbps
max-station-count=2007 distance=dynamic tx-power=17 tx-power-mode=all-rates-fixed noise-floor-threshold=default nv2-noise-floor-offset=default
periodic-calibration=default periodic-calibration-interval=60 dfs-mode=none wds-mode=disabled wds-default-bridge=none wds-default-cost=100 wds-cost-range=50-150
wds-ignore-ssid=no update-stats-interval=disabled bridge-mode=enabled default-authentication=yes default-forwarding=yes default-ap-tx-limit=0
default-client-tx-limit=0 proprietary-extensions=post-2.9.25 wmm-support=disabled hide-ssid=no security-profile=default disconnect-timeout=3s
on-fail-retry-time=100ms preamble-mode=both compression=no allow-sharedkey=no station-bridge-clone-mac=00:00:00:00:00:00 ht-ampdu-priorities=0 ht-guard-interval=any
ht-supported-mcs=mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mcs-9,mcs-10,mcs-11,mcs-12,mcs-13,mcs-14,mcs-15,mcs-16,mcs-17,mcs-18,mcs-19,mcs-20,mcs-21,mcs-
22,mcs-23
ht-basic-mcs=mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7 ht-txchains=0,1 ht-rxchains=0,1 ht-amsdu-limit=8192 ht-amsdu-threshold=8192 tdma-period-size=1
nv2-queue-count=2 nv2-qos=default nv2-cell-radius=10 nv2-security=enabled nv2-preshared-key="grandmaster" hw-retries=7 frame-lifetime=0 adaptive-noise-immunity=none
hw-fragmentation-threshold=disabled hw-protection-mode=none hw-protection-threshold=0 frequency-offset=0 rate-selection=advanced multicast-helper=default
multicast-buffering=enabled
my Client side wireless export
[admin@U-CLNT] > interface wireless print advanced
Flags: X - disabled, R - running
0 R name="wlan1" mtu=1500 mac-address=00:0C:42:DF:E9:2A arp=enabled disable-running-check=no interface-type=Atheros AR9300 radio-name="000C42DFE92A" mode=station-bridge
ssid="WAVE" area="" frequency-mode=manual-txpower country=no_country_set antenna-gain=0 frequency=5260 band=5ghz-a/n channel-width=20/40mhz-ht-above
scan-list=default wireless-protocol=nv2-nstreme-802.11 rate-set=default supported-rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps
basic-rates-a/g=6Mbps max-station-count=2007 distance=dynamic tx-power=17 tx-power-mode=all-rates-fixed noise-floor-threshold=default nv2-noise-floor-offset=default
periodic-calibration=default periodic-calibration-interval=60 dfs-mode=none wds-mode=disabled wds-default-bridge=none wds-default-cost=100 wds-cost-range=50-150
wds-ignore-ssid=no update-stats-interval=disabled bridge-mode=enabled default-authentication=yes default-forwarding=yes default-ap-tx-limit=0
default-client-tx-limit=0 proprietary-extensions=post-2.9.25 wmm-support=disabled hide-ssid=no security-profile=default disconnect-timeout=3s
on-fail-retry-time=100ms preamble-mode=both compression=no allow-sharedkey=no station-bridge-clone-mac=00:00:00:00:00:00 ht-ampdu-priorities=0 ht-guard-interval=any
ht-supported-mcs=mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mcs-9,mcs-10,mcs-11,mcs-12,mcs-13,mcs-14,mcs-15,mcs-16,mcs-17,mcs-18,mcs-19,mcs-20,mcs-21,mcs-
22,mcs-23
ht-basic-mcs=mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7 ht-txchains=0,1 ht-rxchains=0,1 ht-amsdu-limit=8192 ht-amsdu-threshold=8192 tdma-period-size=2
nv2-queue-count=2 nv2-qos=default nv2-cell-radius=30 nv2-security=enabled nv2-preshared-key="grandmaster" hw-retries=7 frame-lifetime=0 adaptive-noise-immunity=none
hw-fragmentation-threshold=disabled hw-protection-mode=none hw-protection-threshold=0 frequency-offset=0 rate-selection=advanced multicast-helper=default
multicast-buffering=enabled
Clarification - are you suggesting it was better before 6.27?
i am not sure… but is NV2 not supposed to deliver atleast 100Mbps translating to roughly 10MB/s in real world?
Sometimes nv2 works good but most of the times bad 
Same problem in NV2 with 6.27 and 20mhz. I try multiple configs in 2 sides of the link and nothing (signal-68) and QOS in 10%.. Sxt with tunnel ovpn
Enviado desde mi iPhone utilizando Tapatalk
i think i should revert back to NStreme… this cousin is better than the other. 
NV2 works good in v6.27, the same with all other versions. Maybe you have some other problem with the link.
I like nstreme too, basically because of the lower latency, but nv2 is more stable and nstreme seems abandoned.
We are having the same problems with NV2 in 6.27. One thing we have found is that if every and i Do mean every interface along the path is not at 1 Gig full then speed will drop to lower then 10 Meg tcp however UDP still shows decent throughput.
In our case we had a customer we were trying to deliver 100 Meg to and the radio to radio BW was testing UDP at 100 Meg but when we tried TCP we got a 10/10 connection. The customer interface was at 100 meg. The second we turned it up to a 1 GIG connection. (in this case we put in a dumb GigE switch to handle the radio handoff) the speed went up to 70/70.
We tried changing queues and everything else prior to this.
However on NStream it did not matter what the port was negotiated at it just worked.
Are you on a 10 mhz channel with wireless_fp? 20mhz channel seems to be fine but 10mhz is not good. I went back to the regular package and things improve a lot. I have been in contact with support, but they wanted to know if there was an issue in routed mode. I have not tested as it is not practical on my network.
I using width channel 10…as soon as I turned nv2 off…my net got faster