kisa Posted March 12, 2009 Posted March 12, 2009 День добрый! Помоги пожалуйста разобраться в возможных причинах нестабильной скорости в радио линке. Линк ptp, построен на микротиках RB411AH, карты микротиковские. C обоих сторон антенны "24дБ Bester Polyaris". Расстояние ~4км. настройка 1 стороны /int wireless print advanced Flags: X - disabled, R - running 0 R name="wlan1" mtu=1500 mac-address=00:0C:42:2C:AB:9E arp=enabled disable-running-check=no interface-type=Atheros AR5413 radio-name="000C422CAB9E" mode=station-wds ssid="MikroTik" area="" frequency-mode=manual-txpower country=no_country_set antenna-gain=0 frequency=2437 band=2.4ghz-g-turbo scan-list=2400-2500 rate-set=default supported-rates-b=1Mbps,2Mbps,5.5Mbps,11Mbps supported-rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps basic-rates-b=1Mbps basic-rates-a/g=6Mbps max-station-count=2007 ack-timeout=dynamic tx-power-mode=default noise-floor-threshold=default periodic-calibration=default periodic-calibration-interval=60 burst-time=disabled dfs-mode=none antenna-mode=ant-a wds-mode=dynamic wds-default-bridge=br1 wds-default-cost=100 wds-cost-range=50-150 wds-ignore-ssid=no update-stats-interval=disabled 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 hw-retries=4 frame-lifetime=0 adaptive-noise-immunity=none /int wireless nstreme print 0 name="wlan1" enable-nstreme=yes enable-polling=yes disable-csma=no framer-policy=none framer-limit=3200 настройка 2 стороны /int wireless print advanced Flags: X - disabled, R - running 0 R name="wlan1" mtu=1500 mac-address=00:0C:42:2C:F4:75 arp=enabled disable-running-check=no interface-type=Atheros AR5413 radio-name="000C422CF475" mode=ap-bridge ssid="MikroTik" area="" frequency-mode=manual-txpower country=no_country_set antenna-gain=0 frequency=2437 band=2.4ghz-g-turbo scan-list=default rate-set=default supported-rates-b=1Mbps,2Mbps,5.5Mbps,11Mbps supported-rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps basic-rates-b=1Mbps basic-rates-a/g=6Mbps max-station-count=2007 ack-timeout=dynamic tx-power-mode=default noise-floor-threshold=default periodic-calibration=default periodic-calibration-interval=60 burst-time=disabled dfs-mode=none antenna-mode=ant-a wds-mode=dynamic wds-default-bridge=br1 wds-default-cost=100 wds-cost-range=50-150 wds-ignore-ssid=no update-stats-interval=disabled 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 hw-retries=4 frame-lifetime=0 adaptive-noise-immunity=none /int wireless nstreme print enable-nstreme=yes enable-polling=yes disable-csma=yes framer-policy=best-fit framer-limit=4000 Результаты измерений iperf: [ 5] 0.0-18.5 sec 872 KBytes 387 Kbits/sec [ 5] 0.0-10.3 sec 21.0 MBytes 17.0 Mbits/sec [ 5] 0.0-10.1 sec 45.3 MBytes 37.5 Mbits/sec [ 5] 0.0-14.7 sec 26.1 MBytes 14.9 Mbits/sec [ 5] 0.0-12.2 sec 11.6 MBytes 8.03 Mbits/sec [ 5] 0.0-10.0 sec 46.9 MBytes 39.3 Mbits/sec [ 5] 0.0-17.4 sec 600 KBytes 282 Kbits/sec [ 5] 0.0-12.4 sec 2.87 MBytes 1.94 Mbits/sec [ 5] 0.0-24.2 sec 9.12 MBytes 3.16 Mbits/sec [ 5] 0.0-10.1 sec 13.7 MBytes 11.3 Mbits/sec Вот мониторинг с первой стороны [admin@RB1] /interface wireless> monitor 0 status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "36Mbps*2" rx-rate: "54Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -59dBm noise-floor: -98dBm signal-to-noise: 39dB tx-ccq: 86% p-throughput: 44800 overall-tx-ccq: 88% authenticated-clients: 1 wds-link: yes nstreme: yes polling: yes csma-disabled: yes framing-mode: best-fit framing-limit: 3999 routeros-version: "3.10" last-ip: 172.16.0.1 802.1x-port-enabled: yes compression: no current-tx-powers: 6Mbps:19(19),9Mbps:19(19),12Mbps:19(19),18Mbps:19(19),24Mbps:19(19),36Mbps:18(18 ),48Mbps:17(17), 54Mbps:16(16) notify-external-fdb: no status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "54Mbps*2" rx-rate: "54Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -57dBm tx-signal-strength: -61dBm noise-floor: -98dBm signal-to-noise: 41dB tx-ccq: 100% rx-ccq: 100% p-throughput: 55138 overall-tx-ccq: 100% status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "54Mbps*2" rx-rate: "48Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -57dBm tx-signal-strength: -62dBm noise-floor: -98dBm signal-to-noise: 41dB tx-ccq: 100% rx-ccq: 100% status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "54Mbps*2" rx-rate: "48Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -58dBm tx-signal-strength: -61dBm noise-floor: -98dBm signal-to-noise: 40dB tx-ccq: 92% rx-ccq: 87% p-throughput: 52327 overall-tx-ccq: 92% status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "48Mbps*2" rx-rate: "48Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -58dBm tx-signal-strength: -62dBm noise-floor: -98dBm signal-to-noise: 40dB tx-ccq: 86% rx-ccq: 61% p-throughput: 50018 overall-tx-ccq: 86% status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "54Mbps*2" rx-rate: "48Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -60dBm tx-signal-strength: -62dBm noise-floor: -98dBm signal-to-noise: 38dB tx-ccq: 98% rx-ccq: 48% p-throughput: 51328 overall-tx-ccq: 98% status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "48Mbps*2" rx-rate: "48Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -58dBm tx-signal-strength: -63dBm noise-floor: -98dBm signal-to-noise: 40dB tx-ccq: 85% rx-ccq: 79% p-throughput: 50249 overall-tx-ccq: 85% status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "48Mbps*2" rx-rate: "48Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -59dBm tx-signal-strength: -60dBm noise-floor: -98dBm signal-to-noise: 39dB tx-ccq: 91% rx-ccq: 74% p-throughput: 47903 overall-tx-ccq: 91% authenticated-clients: 1 status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "48Mbps*2" rx-rate: "54Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -59dBm tx-signal-strength: -62dBm noise-floor: -98dBm signal-to-noise: 39dB tx-ccq: 94% rx-ccq: 69% p-throughput: 49337 overall-tx-ccq: 94% authenticated-clients: 1 status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "48Mbps*2" rx-rate: "48Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -59dBm tx-signal-strength: -63dBm noise-floor: -98dBm signal-to-noise: 39dB tx-ccq: 92% rx-ccq: 87% p-throughput: 47196 overall-tx-ccq: 92% authenticated-clients: 1 status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "54Mbps*2" rx-rate: "36Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -59dBm tx-signal-strength: -62dBm noise-floor: -98dBm signal-to-noise: 39dB tx-ccq: 88% rx-ccq: 82% p-throughput: 48841 overall-tx-ccq: 88% status: connected-to-ess band: 2.4ghz-g-turbo frequency: 2437MHz tx-rate: "48Mbps*2" rx-rate: "36Mbps*2" ssid: "MikroTik" bssid: 00:0C:42:2C:F4:75 radio-name: "000C422CF475" signal-strength: -58dBm tx-signal-strength: -62dBm noise-floor: -98dBm signal-to-noise: 40dB tx-ccq: 93% rx-ccq: 68% p-throughput: 48501 overall-tx-ccq: 93% Спасибо! 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yrida Posted March 12, 2009 Posted March 12, 2009 Частоту смените че ви мучитесь екстра ченелс и вперед. Вставить ник Quote
kisa Posted March 12, 2009 Author Posted March 12, 2009 Частоту смените че ви мучитесь екстра ченелс и вперед.А по каким данным Вы сделали вывод, что эфир зашумлен?Екстра ченел это 2.3? А антенны будут работать на этой частоте? У них диапазон 2400-2483 МГц. Вставить ник Quote
[anp/hsw] Posted March 12, 2009 Posted March 12, 2009 (edited) любая антенна немного более широкополосна, чем написано. просто потеряете уровень сигнала (а заодно и шума) антенны на 2.4ггц спокойно можно использовать на 1800-3600. если конечно, запас по мощности сигнала есть. на границах частот уже будет -10-15дб но использовать антенну 2.4 под частоту 2.3 - почти норма. кстати, антенны "bester polyaris" за антенну не считаю. уж извините, но это какая-то пародия. сильно уже заметна разница в сигнале при сравнении с аналогичной моделью "bester parabolic" Edited March 12, 2009 by [anp/hsw] Вставить ник Quote
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