Description
The command is used to configure a radio interface. This document describes the command in WANFleX software version with TDMA technology support.
CAUTION
Not all of the radio interfaces have the same set of parameters and options because it depends on the radio module type and standard. A complete list of parameters available for the specific interface can be displayed by "rf interface ?" command. Radio module type and its features list are displayed by "rf interface cap" command.
Syntax:
usage: rf interface parameters... Interface rf5.0 parameters: band XXX: bandwidth (MHz) grid B G: frequency grid - <bw> freq1[-freq2[/step]],... | clear freq XXX: central frequency (MHz) bitr XXX: bitrate (Kbps) txpwr XXX: tx power (dBm) sid XXX: system identifier - up to 8 hex digits [10101010] cap [full]: RF capabilities txrt XXX: max transmit retries [10] txvrt XXX: max transmit retries in voice mode [5] [-]burst : burst mode (Super Packeting) [-]shortgi: short guard interval mode [-]pwrctl : automatic TPC mode mimo|miso [-]misoctl [-]greenfield
NOTE
If frequency roaming is enabled, make changes to the roaming profile using "mint profile" command before making changes on the unit.
Parameters
| Parameter | Description |
|---|---|
| cap | Displays the radio module capabilities including acceptable transmit the information on power levels, frequencies etc. |
| band XXX | Allows choosing the bandwidth for transmission, can be specified as numeric or text values:
The ability to switch between different bandwidth values is determined by the license. Within the same wireless network, devices must have the same values for this parameter. |
| grid B G | Allows to creat a customized frequency grid within the license restrictions, i.e. to form the list of operating frequencies.
The resulting frequency grid can be viewed in radio interface properties and used in all cases when the frequency is determined automatically ("roaming", "dfs" and so on.).
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| freq XXX | Sets central operating frequency in MHz. Must be equal at the both sides of the link. |
| bitr XXX | The bit transfer rate in Kbit/s of the radio link. Allowed values are:
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| txpwr XXX | Sets the transmitter emitting power in dBm. The acceptable transmit power values can vary depending on the radio module type. |
| sid XXX | Network identifier, a hexadecimal number in the range of 1H to FFFFFFH. All routers that are supposed to see each other on the same radio link must have the same identifier. |
| txrt XXX | Sets the maximum number of repeat requests to be done when sending unicast packets. By default is 10. |
| txvrt XXX | Sets the maximum number of repeat requests for data packets (excluding voice packets) in voice mode. By default is 5. The maximum allowed value is 64. Voice mode is turned on automatically when VoIP traffic appears. |
| [-]burst | Enables/disable the BURST protocol support. The BURST protocol is grouping several short packets with the same destination address on a radio link into larger packets, thus significantly decreases the response time for applications when intensive streams of short packets appears. BURST has influence to a whole radio interface on selected device, but the BURST protocol can only work for destinations where it is also enabled at the other end, and only if MINT protocol is used at both sides. BURST does not affect the operation of other devices in the network. BURST protocol operation statistic can be viewed by using the "muffer stat" command. Enabled by default. |
| [-]shortgi | Enables/disables the short guard interval mode. Using of this mode allows the device to increase its throughput by reducing the time interval between symbols being transmitted. However, this may significantly increase the intersymbol interference and, thus, cause a higher errors rate. Enabled by default. |
| [-]pwrctl | Включает/выключает режим автоматического управления мощностью передатчика (ATPC). В этом случае устройство будет стремиться поддерживать оптимальную мощность передатчика, обеспечивающую уверенный приём отправляемых им пакетов на противоположной стороне радиоканала. По умолчанию включено. |
| mimo|miso | Выбор метода кодирования сигнала: MIMO или MISO. |
| [-]misoctl | В данном режиме устройство использует метод MISO для передачи служебных и управляющих пакетов при работе на низшей модуляции. Позволяет сохранить работоспособность беспроводного канала связи при отказе передатчика в одной из поляризаций или из-за дисбаланса уровней сигналов в разных потоках. Для отключения режима передачи управляющих фреймов посредствам метода MISO укажите параметр "-misoctl". |
| [-]greenfield | Включает/выключает режим "Greenfield". Данный режим уменьшает размер передаваемого кадра, удаляя исходное (pre-802.11n) поле из заголовка. Позволяет увеличить произволительность на 15%, а также избежать обработки и декодирования шумовых преамбул, что приводит улучшению качества сигнала. |
| stat | Выводит на экран текущую статистику радиомодуля. Расшифровку значений таблицы можно найти в подразделе "Примеры". |
Примеры
Выведем информацию об используемом радиомодуле. rf cap
Radio capabilities:
Model name: InfiNet Wireless RMM54 Rev4
Adapter name: Atheros AR9220 Wireless PCI Adapter. InfiNet Wireless RMM54 5.5 GHz Radio rev 04 Beamsteering Antenna
Subvendor: 0xfff1, Subid 0x5404
Power levels (dBm): min -10 max 30 step 0.5
Greenfield mode supported
Smart Antenna, 16 Beams, 1000ns, HW#0, SW#18, Enabled
MAC address: 000435136C7B
Bandwidth modes: 28, 3.5, 7, 14, 30, 15, 5, 10, 20, 40
Bitrate list: 30000, 60000, 90000, 120000,
180000, 240000, 270000, 300000
Frequency bounds (40 MHz): 4800-6060
Frequency grid (user defined): 4800-6060/100
Frequency list (12 channels):
4900, 5000, 5100, 5200, 5300, 5400, 5500, 5600, 5700, 5800, 5900, 6000
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В данном примере перечислены способы указания сетки частот. rf rf5.0 grid 40 4920-5940/5 rf rf5.0 grid 20 5310-5390/10,5450,5500-5580/20 rf rf5.0 grid 10 5480, 5500, 5520, 5540, 5560, 5580 |
Установим ширину полосы 20 на опорном узле частотного роуминга. mint rf5.0 profile 1 -band 20 rf band 20 |
Выведем текущую статистику радиомодуля. rf stat RF rf5.0 status UP (band 40, freq 5400) :ACTIVE DFS status OFF TDMA status Master (5 ms DL/UL:Auto) (DL2500/UL2500) +--------------------------------------+--------------------------------------+ | Receive statistics | Transmit statistics | +--------------------------------------+--------------------------------------+ | Broadcast Rate 300000 | Voice Mode OFF | | Bytes Received 2564270416 | Bytes Transmitted 3133097156 | | Frames Received OK 1174142362 | Frames Transmitted OK 755978882 | | Multicast Frames 10147084 | Multicast Frames 1852112 | +--------------------------------------+--------------------------------------+ | Load (kbps) 134484 | Load (kbps) 141136 | | Load (pps) 11177 | Load (pps) 7044 | | Frame size (bytes) 1504 | Frame size (bytes) 2504 | +--------------------------------------+--------------------------------------+ | RX Medium Load 45.0% | TX Medium Load 46.6% | | Total Medium Busy 92.1% | Frame Time Used 98.2% | +--------------------------------------+--------------------------------------+ | Duplicate Received 186877 | Too Short/Long Frame 0 / 4 | | Lost frames 74928 | Aggr Subframe Retries 1207537 | | Rx Collision 1 | Aggr Full Retries 8900 | | FIFO Overrun 13 | FIFO Underrun 0 | | CRC Errors 11187590 | Excessive Retries 1233 | | Noise Floor -96 | Max aggr frames 52 | | Rx Subslots/Nodes 4 / 48 | Max aggr bytes 65430 | | Scrambled frames 11 | Scrambled frames 0 | | Scramble errors 2 | Tx queue overflow 1377218266 | | Rx Time Limit (us) 127 | Tx Time Limit (us) 1942 | | Rx Cap (Mbps) 112 | Tx Cap (Mbps) 139 | +--------------------------------------+--------------------------------------+
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