NV2 speeds really bad with ver 6.27

saintofinternet · Fri Apr 03, 2015 4:31 am

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.

saintofinternet · Fri Apr 03, 2015 4:34 am

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

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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

CelticComms · Fri Apr 03, 2015 5:25 am

Clarification - are you suggesting it was better before 6.27?

saintofinternet · Fri Apr 03, 2015 5:27 am

i am not sure.... but is NV2 not supposed to deliver atleast 100Mbps translating to roughly 10MB/s in real world?

Lakis · Fri Apr 03, 2015 1:14 pm

Sometimes nv2 works good but most of the times bad

gmmarc · Fri Apr 03, 2015 11:51 pm

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

saintofinternet · Wed Apr 08, 2015 7:02 am

i think i should revert back to NStreme... this cousin is better than the other.

CyberTod · Wed Apr 08, 2015 8:42 am

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.

bclewl1ns · Sun Apr 19, 2015 8:59 am

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.

ejansson · Mon Apr 20, 2015 4:17 am

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.

cmanciu · Fri May 01, 2015 11:52 pm

I using width channel 10...as soon as I turned nv2 off....my net got faster