Radio frequency (RF) is a rate of electrical oscillation in the range of 300 KHz to 300 GHz. WLAN uses the 2.4 GHz band and 5 GHz band radio frequencies as the transmission media. The 2.4 GHz band includes radio frequencies from 2.4 GHz to 2.4835 GHz. The 5 GHz band includes radio frequencies from 5.150 GHz to 5.350 GHz and from 5.725 GHz to 5.850 GHz.

The term "radio frequency" or its abbreviation RF is also used as a synonym for "radio" in wireless communication.

Radio mode

IEEE defines the 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, and 802.11ax radio modes. H3C defines an 802.11gac radio mode and an 802.11gax radio mode that enable 802.11ac and 802.11ax radios to use the 2.4 GHz band.

NOTE:

· 802.11g, 802.11n, 802.11ac, 802.11ax are backward compatible.

· In this document, the term "802.11ac" refers to both 802.11ac and 802.11gac and the term "802.11ax" refers to both 802.11ax and 802.11gax, unless otherwise specified.

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Table 1 provides a comparison of these radio modes.

Table 1 Comparison of 802.11 standards

IEEE standard	Frequency band	Maximum rate
802.11a	5 GHz	54 Mbps
802.11b	2.4 GHz	11 Mbps
802.11g	2.4 GHz	54 Mbps
802.11n	2.4 GHz or 5 GHz	600 Mbps
802.11ac	5 GHz	6900 Mbps
802.11gac	2.4 GHz	1600 Mbps
802.11ax	5 GHz	9600 Mbps
802.11gax	2.4 GHz	6900 Mbps

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Channel

A channel is a range of frequencies with a specific bandwidth.

The 2.4 GHz band has 14 channels. The bandwidth for each channel is 20 MHz and each two channels are spaced 5 MHz apart. Among the 14 channels, four groups of non-overlapping channels exist and the most commonly used one contains channels 1, 6, and 11.

The 5 GHz band can provide higher rates and is more immune to interference. There are 24 non-overlapping channels designated to the 5 GHz band. The channels are spaced 20 MHz apart with a bandwidth of 20 MHz. The available channels vary by country.

Transmit power

Transmit power reflects the signal strength of a wireless device. A higher transmit power enables a radio to cover a larger area but it brings more interference to adjacent devices. The signal strength decreases as the transmission distance increases.

Transmission rate

Transmission rate refers to the speed at which wireless devices transmit traffic. It varies by radio mode and spreading, coding, and modulation schemes. The following are rates supported by different types of radios:

· 802.11a—6 Mbps, 9 Mbps, 12 Mbps, 18 Mbps, 24 Mbps, 36 Mbps, 48 Mbps, and 54 Mbps.

· 802.11b—1 Mbps, 2 Mbps, 5.5 Mbps, and 11 Mbps.

· 802.11g—1 Mbps, 2 Mbps, 5.5 Mbps, 6 Mbps, 9 Mbps, 11 Mbps, 12 Mbps, 18 Mbps, 24 Mbps, 36 Mbps, 48 Mbps, and 54 Mbps.

· 802.11n—Rates for 802.11n radios vary by channel bandwidth. For more information, see "MCS."

· 802.11ac—Rates for 802.11ac radios vary by channel bandwidth and number of spatial streams (NSS). For more information, see "VHT-MCS."

· 802.11ax—Rates for 802.11ax radios vary by channel bandwidth and number of spatial streams (NSS). For more information, see "HE-MCS."

MCS

Modulation and Coding Scheme (MCS) defined in IEEE 802.11n-2009 determines the modulation, coding, and number of spatial streams.

MCS types

802.11n MCSs are classified into the following types:

· Mandatory MCSs—Mandatory MCSs for an AP. To associate with an 802.11n AP, a client must support the mandatory MCSs for the AP.

· Supported MCSs—MCSs supported by an AP besides the mandatory MCSs. If a client supports both mandatory and supported MCSs, the client can use a supported rate to communicate with the AP.

· Multicast MCS—MCS for the rate at which an AP transmits multicast frames.

MCS parameters

An MCS is identified by an MCS index, which is represented by an integer in the range of 0 to 76. An MCS index is the mapping from MCS to a data rate.

Table 2 through Table 9 show sample MCS parameters for 20 MHz and 40 MHz.

When the bandwidth mode is 20 MHz, MCS indexes 0 through 15 are mandatory for APs, and MCS indexes 0 through 7 are mandatory for clients.

Table 2 MCS parameters (20 MHz, NSS=1)

MCS index	Number of spatial streams	Modulation	Data rate (Mbps)
MCS index	Number of spatial streams	Modulation	800ns GI	400ns GI
0	1	BPSK	6.5	7.2
1	1	QPSK	13.0	14.4
2	1	QPSK	19.5	21.7
3	1	16-QAM	26.0	28.9
4	1	16-QAM	39.0	43.3
5	1	64-QAM	52.0	57.8
6	1	64-QAM	58.5	65.0
7	1	64-QAM	65.0	72.2

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Table 3 MCS parameters (20 MHz, NSS=2)

MCS index	Number of spatial streams	Modulation	Data rate (Mbps)
MCS index	Number of spatial streams	Modulation	800ns GI	400ns GI
8	2	BPSK	13.0	14.4
9	2	QPSK	26.0	28.9
10	2	QPSK	39.0	43.3
11	2	16-QAM	52.0	57.8
12	2	16-QAM	78.0	86.7
13	2	64-QAM	104.0	115.6
14	2	64-QAM	117.0	130.0
15	2	64-QAM	130.0	144.4

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Table 4 MCS parameters (20 MHz, NSS=3)

MCS index	Number of spatial streams	Modulation	Data rate (Mbps)
MCS index	Number of spatial streams	Modulation	800ns GI	400ns GI
16	3	BPSK	19.5	21.7
17	3	QPSK	39.0	43.3
18	3	QPSK	58.5	65.0
19	3	16-QAM	78.0	86.7
20	3	16-QAM	117.0	130.0
21	3	64-QAM	156.0	173.3
22	3	64-QAM	175.5	195.0
23	3	64-QAM	195.0	216.7

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Table 5 MCS parameters (20 MHz, NSS=4)

MCS index	Number of spatial streams	Modulation	Data rate (Mbps)
MCS index	Number of spatial streams	Modulation	800ns GI	400ns GI
24	4	BPSK	26.0	28.9
25	4	QPSK	52.0	57.8
26	4	QPSK	78.0	86.7
27	4	16-QAM	104.0	115.6
28	4	16-QAM	156.0	173.3
29	4	64-QAM	208.0	231.1
30	4	64-QAM	234.0	260.0
31	4	64-QAM	260.0	288.9

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Table 6 MCS parameters (40 MHz, NSS=1)

MCS index	Number of spatial streams	Modulation	Data rate (Mbps)
MCS index	Number of spatial streams	Modulation	800ns GI	400ns GI
0	1	BPSK	13.5	15.0
1	1	QPSK	27.0	30.0
2	1	QPSK	40.5	45.0
3	1	16-QAM	54.0	60.0
4	1	16-QAM	81.0	90.0
5	1	64-QAM	108.0	120.0
6	1	64-QAM	121.5	135.0
7	1	64-QAM	135.0	150.0

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Table 7 MCS parameters (40 MHz, NSS=2)

MCS index	Number of spatial streams	Modulation	Data rate (Mbps)
MCS index	Number of spatial streams	Modulation	800ns GI	400ns GI
8	2	BPSK	27.0	30.0
9	2	QPSK	54.0	60.0
10	2	QPSK	81.0	90.0
11	2	16-QAM	108.0	120.0
12	2	16-QAM	162.0	180.0
13	2	64-QAM	216.0	240.0
14	2	64-QAM	243.0	270.0
15	2	64-QAM	270.0	300.0

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Table 8 MCS parameters (40 MHz, NSS=3)

MCS index	Number of spatial streams	Modulation	Data rate (Mbps)
MCS index	Number of spatial streams	Modulation	800ns GI	400ns GI
16	3	BPSK	40.5	45.0
17	3	QPSK	81.0	90.0
18	3	QPSK	121.5	135.0
19	3	16-QAM	162.0	180.0
20	3	16-QAM	243.0	270.0
21	3	64-QAM	324.0	360.0
22	3	64-QAM	364.5	405.0
23	3	64-QAM	405.0	450.0

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Table 9 MCS parameters (40 MHz, NSS=4)

MCS index	Number of spatial streams	Modulation	Data rate (Mbps)
MCS index	Number of spatial streams	Modulation	800ns GI	400ns GI
24	4	BPSK	54.0	60.0
25	4	QPSK	108.0	120.0
26	4	QPSK	162.0	180.0
27	4	16-QAM	216.0	240.0
28	4	16-QAM	324.0	360.0
29	4	64-QAM	432.0	480.0
30	4	64-QAM	486.0	540.0
31	4	64-QAM	540.0	600.0

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NOTE:

· For all the MCS data rate tables, see IEEE 802.11n-2009.

· Support for MCS indexes depends on the device model.

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VHT-MCS

Very High Throughput Modulation and Coding Scheme (VHT-MCS) defined in IEEE 802.11ac determines the wireless data rates.

VHT-MCS types

802.11ac VHT-MCSs are classified into the following types:

· Mandatory VHT-MCSs—Mandatory VHT-MCSs for an AP. To associate with an 802.11ac AP, a client must support the mandatory VHT-MCSs for the AP.

· Supported VHT-MCSs—VHT-MCSs supported by an AP besides the mandatory VHT-MCSs. If a client supports both mandatory and supported VHT-MCSs, the client can use a supported rate to communicate with the AP.

· Multicast VHT-MCS—VHT-MCS for the rate at which an AP transmits multicast frames.

VHT-MCS parameters

A VHT-MCS is identified by a VHT-MCS index, which is represented by an integer in the range of 0 to 9. A VHT-MCS index is the mapping from VHT-MCS to a data rate.

802.11ac supports the 20 MHz, 40 MHz, 80 MHz, and 160 MHz (80+80 MHz) bandwidth modes, and supports a maximum of eight spatial streams. 802.11gac supports the 20 MHz and 40 MHz bandwidth modes.

Table 10 through Table 21 show VHT-MCS parameters that are supported by an AP.

Table 10 VHT-MCS parameters (20 MHz, NSS=1)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	6.5	7.2
1	QPSK	13.0	14.4
2	QPSK	19.5	21.7
3	16-QAM	26.0	28.9
4	16-QAM	39.0	43.3
5	64-QAM	52.0	57.8
6	64-QAM	58.5	65.0
7	64-QAM	65.0	72.2
8	256-QAM	78.0	86.7
9	Not valid

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Table 11 VHT-MCS parameters (20 MHz, NSS=2)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	13.0	14.4
1	QPSK	26.0	28.9
2	QPSK	39.0	43.3
3	16-QAM	52.0	57.8
4	16-QAM	78.0	86.7
5	64-QAM	104.0	115.6
6	64-QAM	117.0	130.0
7	64-QAM	130.0	144.4
8	256-QAM	156.0	173.3
9	Not valid

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Table 12 VHT-MCS parameters (20 MHz, NSS=3)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	19.5	21.7
1	QPSK	39.0	43.3
2	QPSK	58.5	65.0
3	16-QAM	78.0	86.7
4	16-QAM	117.0	130.0
5	64-QAM	156.0	173.3
6	64-QAM	175.5	195.0
7	64-QAM	195.0	216.7
8	256-QAM	234.0	260.0
9	256-QAM	260.0	288.9

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Table 13 VHT-MCS parameters (20 MHz, NSS=4)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	26.0	28.9
1	QPSK	52.0	57.8
2	QPSK	78.0	86.7
3	16-QAM	104.0	115.6
4	16-QAM	156.0	173.3
5	64-QAM	208.0	231.1
6	64-QAM	234.0	260.0
7	64-QAM	260.0	288.9
8	256-QAM	312.0	346.7
9	Not valid

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Table 14 VHT-MCS parameters (40 MHz, NSS=1)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	13.5	15.0
1	QPSK	27.0	30.0
2	QPSK	40.5	45.0
3	16-QAM	54.0	60.0
4	16-QAM	81.0	90.0
5	64-QAM	108.0	120.0
6	64-QAM	121.5	135.0
7	64-QAM	135.0	150.0
8	256-QAM	162.0	180.0
9	256-QAM	180.0	200.0

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Table 15 VHT-MCS parameters (40 MHz, NSS=2)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	27.0	30.0
1	QPSK	54.0	60.0
2	QPSK	81.0	90.0
3	16-QAM	108.0	120.0
4	16-QAM	162.0	180.0
5	64-QAM	216.0	240.0
6	64-QAM	243.0	270.0
7	64-QAM	270.0	300.0
8	256-QAM	324.0	360.0
9	256-QAM	360.0	400.0

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Table 16 VHT-MCS parameters (40 MHz, NSS=3)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	40.5	45.0
1	QPSK	81.0	90.0
2	QPSK	121.5	135.0
3	16-QAM	162.0	180.0
4	16-QAM	243.0	270.0
5	64-QAM	324.0	360.0
6	64-QAM	364.5	405.0
7	64-QAM	405.0	450.0
8	256-QAM	486.0	540.0
9	256-QAM	540.0	600.0

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Table 17 VHT-MCS parameters(40 MHz, NSS=4)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	54.0	60.0
1	QPSK	108.0	120.0
2	QPSK	162.0	180.0
3	16-QAM	216.0	240.0
4	16-QAM	324.0	360.0
5	64-QAM	432.0	480.0
6	64-QAM	486.0	540.0
7	64-QAM	540.0	600.0
8	256-QAM	648.0	720.0
9	256-QAM	720.0	800.0

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Table 18 VHT-MCS parameters (80 MHz, NSS=1)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	29.3	32.5
1	QPSK	58.5	65.0
2	QPSK	87.8	97.5
3	16-QAM	117.0	130.0
4	16-QAM	175.5	195.0
5	64-QAM	234.0	260.0
6	64-QAM	263.0	292.5
7	64-QAM	292.5	325.0
8	256-QAM	351.0	390.0
9	256-QAM	390.0	433.3

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Table 19 VHT-MCS parameters (80 MHz, NSS=2)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	58.5	65.0
1	QPSK	117.0	130.0
2	QPSK	175.5	195.0
3	16-QAM	234.0	260.0
4	16-QAM	351.0	390.0
5	64-QAM	468.0	520.0
6	64-QAM	526.5	585.0
7	64-QAM	585.0	650.0
8	256-QAM	702.0	780.0
9	256-QAM	780.0	866.7

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Table 20 VHT-MCS parameters (80 MHz, NSS=3)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	87.8	97.5
1	QPSK	175.5	195.0
2	QPSK	263.3	292.5
3	16-QAM	351.0	390.0
4	16-QAM	526.5	585.0
5	64-QAM	702.0	780.0
6	Not valid
7	64-QAM	877.5	975.0
8	256-QAM	1053.0	1170.0
9	256-QAM	1170.0	1300.0

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Table 21 VHT-MCS parameters (80 MHz, NSS=4)

VHT-MCS index	Modulation	Data rate (Mbps)
VHT-MCS index	Modulation	800ns GI	400ns GI
0	BPSK	117.0	130.0
1	QPSK	234.0	260.0
2	QPSK	351.0	390.0
3	16-QAM	468.0	520.0
4	16-QAM	702.0	780.0
5	64-QAM	936.0	1040.0
6	64-QAM	1053.0	1170.0
7	64-QAM	1170.0	1300.0
8	256-QAM	1404.0	1560.0
9	256-QAM	1560.0	1733.3

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NOTE:

· For all the VHT-MCS data rate tables, see IEEE 802.11ac-2013.

· Support for VHT-MCS indexes depends on the AP model.

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HE-MCS

High Efficiency Modulation and Coding Scheme (HE-MCS) defined in IEEE 802.11ax determines the wireless data rates.

HE-MCS types

802.11ax HE-MCSs are classified into the following types:

· Mandatory HE-MCSs—Mandatory HE-MCSs for an AP. To associate with an 802.11ax AP, a client must support the mandatory HE-MCSs for the AP.

· Supported HE-MCSs—HE-MCSs supported by an AP besides the mandatory HE-MCSs. If a client supports both mandatory and supported HE-MCSs, the client can use a supported rate to communicate with the AP.

· Multicast HE-MCS—HE-MCS for the rate at which an AP transmits multicast frames.

HE-MCS parameters

An HE-MCS is identified by an HE-MCS index, which is represented by an integer in the range of 0 to 11. An HE-MCS index is the mapping from HE-MCS to a data rate.

802.11ax supports the 20 MHz, 40 MHz, 80 MHz, and 160 MHz (80+80 MHz) bandwidth modes, and supports a maximum of eight spatial streams. 802.11gax supports the 20 MHz and 40 MHz bandwidth modes.

Table 22 through Table 37 show HE-MCS parameters that are supported by an AP.

Table 22 HE-MCS parameters (20 MHz, NSS=1)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	1	BPSK	8	8.6
1	1	QPSK	16	17.2
2	1	QPSK	24	25.8
3	1	16-QAM	33	34.4
4	1	16-QAM	49	51.6
5	1	64-QAM	65	68.8
6	1	64-QAM	73	77.4
7	1	64-QAM	81	86
8	1	256-QAM	98	103.2
9	1	256-QAM	108	114.7
10	1	1024-QAM	122	129
11	1	1024-QAM	135	143.4

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Table 23 HE-MCS parameters (20 MHz, NSS=2)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	2	BPSK	16	17.2
1	2	QPSK	32	34.4
2	2	QPSK	48	51.6
3	2	16-QAM	66	68.8
4	2	16-QAM	98	103.2
5	2	64-QAM	130	137.6
6	2	64-QAM	146	154.8
7	2	64-QAM	162	172
8	2	256-QAM	196	206.4
9	2	256-QAM	216	229.4
10	2	1024-QAM	244	258
11	2	1024-QAM	270	286.8

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Table 24 HE-MCS parameters (20 MHz, NSS=3)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	3	BPSK	24	25.8
1	3	QPSK	48	51.6
2	3	QPSK	72	77.4
3	3	16-QAM	99	103.2
4	3	16-QAM	147	154.8
5	3	64-QAM	195	206.4
6	3	64-QAM	219	232.2
7	3	64-QAM	243	258
8	3	256-QAM	294	309.6
9	3	256-QAM	324	344.1
10	3	1024-QAM	366	387
11	3	1024-QAM	405	430.2

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Table 25 HE-MCS parameters (20 MHz, NSS=4)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	4	BPSK	32	34.4
1	4	QPSK	64	68.8
2	4	QPSK	96	103.2
3	4	16-QAM	132	137.6
4	4	16-QAM	196	206.4
5	4	64-QAM	260	275.2
6	4	64-QAM	292	309.6
7	4	64-QAM	324	344
8	4	256-QAM	392	412.8
9	4	256-QAM	432	458.8
10	4	1024-QAM	488	516
11	4	1024-QAM	540	573.6

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Table 26 HE-MCS parameters (40 MHz, NSS=1)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	1	BPSK	16	17.2
1	1	QPSK	33	34.4
2	1	QPSK	49	51.6
3	1	16-QAM	65	68.8
4	1	16-QAM	98	103.2
5	1	64-QAM	130	137.6
6	1	64-QAM	146	154.9
7	1	64-QAM	163	172.1
8	1	256-QAM	195	206.5
9	1	256-QAM	217	229.4
10	1	1024-QAM	244	258.1
11	1	1024-QAM	271	286.8

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Table 27 HE-MCS parameters (40 MHz, NSS=2)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	2	BPSK	32	34.4
1	2	QPSK	66	68.8
2	2	QPSK	98	103.2
3	2	16-QAM	130	137.6
4	2	16-QAM	196	206.4
5	2	64-QAM	260	275.2
6	2	64-QAM	292	309.8
7	2	64-QAM	326	344.2
8	2	256-QAM	390	413
9	2	256-QAM	434	458.8
10	2	1024-QAM	488	516.2
11	2	1024-QAM	542	573.6

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Table 28 HE-MCS parameters (40 MHz, NSS=3)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	3	BPSK	48	51.6
1	3	QPSK	99	103.2
2	3	QPSK	147	154.8
3	3	16-QAM	195	206.4
4	3	16-QAM	294	309.6
5	3	64-QAM	390	412.8
6	3	64-QAM	438	464.7
7	3	64-QAM	489	516.3
8	3	256-QAM	585	619.5
9	3	256-QAM	651	688.2
10	3	1024-QAM	732	774.3
11	3	1024-QAM	813	860.4

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Table 29 HE-MCS parameters(40 MHz, NSS=4)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	4	BPSK	64	68.8
1	4	QPSK	132	137.6
2	4	QPSK	196	206.4
3	4	16-QAM	260	275.2
4	4	16-QAM	392	412.8
5	4	64-QAM	520	550.4
6	4	64-QAM	584	619.6
7	4	64-QAM	652	688.4
8	4	256-QAM	780	826
9	4	256-QAM	868	917.6
10	4	1024-QAM	976	1032.4
11	4	1024-QAM	1084	1147.2

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Table 30 HE-MCS parameters (80 MHz, NSS=1)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	1	BPSK	34	36
1	1	QPSK	68	72.1
2	1	QPSK	102	108.1
3	1	16-QAM	136	144.1
4	1	16-QAM	204	216.2
5	1	64-QAM	272	288.2
6	1	64-QAM	306	324.4
7	1	64-QAM	340	360.3
8	1	256-QAM	408	432.4
9	1	256-QAM	453	480.4
10	1	1024-QAM	510	540.4
11	1	1024-QAM	567	600.5

‌

Table 31 HE-MCS parameters (80 MHz, NSS=2)

HE-MCS index	Spatial streams	Modulation	Data rate (Mb/s)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	2	BPSK	68	72
1	2	QPSK	136	144.2
2	2	QPSK	204	216.2
3	2	16-QAM	272	288.2
4	2	16-QAM	408	432.4
5	2	64-QAM	544	576.4
6	2	64-QAM	612	648.8
7	2	64-QAM	680	720.6
8	2	256-QAM	816	864.8
9	4	256-QAM	906	960.8
10	4	1024-QAM	1020	1080.8
11	4	1024-QAM	1134	1201

‌

Table 32 HE-MCS parameters (80 MHz, NSS=3)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	3	BPSK	102	108
1	3	QPSK	204	216.3
2	3	QPSK	306	324.3
3	3	16-QAM	408	432.3
4	3	16-QAM	612	648.6
5	3	64-QAM	816	864.6
6	3	64-QAM	918	973.2
7	3	64-QAM	1020	1080.9
8	3	256-QAM	1224	1297.2
9	4	256-QAM	1359	1441.2
10	4	1024-QAM	1530	1621.2
11	4	1024-QAM	1701	1801.5

‌

Table 33 HE-MCS parameters (80 MHz, NSS=4)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	4	BPSK	136	144
1	4	QPSK	272	288.4
2	4	QPSK	408	432.4
3	4	16-QAM	544	576.4
4	4	16-QAM	816	864.8
5	4	64-QAM	1088	1152.8
6	4	64-QAM	1224	1297.6
7	4	64-QAM	1360	1441.2
8	4	256-QAM	1632	1729.6
9	4	256-QAM	1812	1921.6
10	4	1024-QAM	2040	2161.6
11	4	1024-QAM	2268	2402

‌

Table 34 HE-MCS parameters (160 MHz or 80+80 MHz, NSS=1)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	1	BPSK	68	72.1
1	1	QPSK	136	144.1
2	1	QPSK	204	216.2
3	1	16-QAM	272	288.2
4	1	16-QAM	408	432.4
5	1	64-QAM	544	576.5
6	1	64-QAM	612	648.5
7	1	64-QAM	681	720.6
8	1	256-QAM	817	864.7
9	1	256-QAM	907	960.7
10	1	1024-QAM	1021	1080.9
11	1	1024-QAM	1134	1201

‌

Table 35 HE-MCS parameters (160 MHz or 80+80 MHz, NSS=2)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	2	BPSK	136	144.1
1	2	QPSK	272	288.2
2	2	QPSK	408	432.4
3	2	16-QAM	544	576.5
4	2	16-QAM	817	864.7
5	2	64-QAM	1089	1152.9
6	2	64-QAM	1225	1297.1
7	2	64-QAM	1361	1441.2
8	2	256-QAM	1633	1729.4
9	4	256-QAM	1815	1921.5
10	4	1024-QAM	2042	2161.8
11	4	1024-QAM	2269	2401.9

‌

Table 36 HE-MCS parameters (160 MHz or 80+80 MHz, NSS=3)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	3	BPSK	204	216.2
1	3	QPSK	408	432.4
2	3	QPSK	613	648.5
3	3	16-QAM	817	864.7
4	3	16-QAM	1225	1297.1
5	3	64-QAM	1633	1729.4
6	3	64-QAM	1838	1945.6
7	3	64-QAM	2042	2161.8
8	3	256-QAM	2450	2594.1
9	4	256-QAM	2722	2882.4
10	4	1024-QAM	3062	3242.6
11	4	1024-QAM	3403	3602.9

‌

Table 37 HE-MCS parameters (160 MHz or 80+80 MHz, NSS=4)

HE-MCS index	Spatial streams	Modulation	Data rate (Mbps)
HE-MCS index	Spatial streams	Modulation	1600ns GI	800ns GI
0	4	BPSK	272	288.2
1	4	QPSK	544	576.5
2	4	QPSK	817	864.7
3	4	16-QAM	1089	1152.9
4	4	16-QAM	1633	1729.4
5	4	64-QAM	2178	2305.9
6	4	64-QAM	2450	2594.1
7	4	64-QAM	2722	2882.4
8	4	256-QAM	3267	3458.8
9	4	256-QAM	3630	3843.1
10	4	1024-QAM	4083	4323.5
11	4	1024-QAM	4537	4803.9

‌

NOTE:

· For all the HE-MCS data rate tables, see IEEE 802.11ax.

· Support for HE-MCS indexes depends on the AP model.

‌

Restrictions and guidelines: Radio management configuration

You can configure radios by using the following methods:

· Configure radios one by one in radio view.

· Assign APs to an AP group and configure the radios of the AP group in an AP group's radio view.

· Configure all radios in global configuration view.

For a radio, the settings made in these views for the same parameter take effect in descending order of radio view, an AP group's radio view, and global configuration view.

Radio management tasks at a glance

To configure radio management, perform the following tasks:

· Enabling or disabling radios

· Specifying a radio mode

· Configuring basic radio functions

· (Optional.) Configuring 802.11n functions

· (Optional.) Configuring 802.11ac functions

· (Optional.) Configuring 802.11ax functions

· (Optional.) Configuring the smart antenna feature

· (Optional.) Configuring error packet ratio optimization and retransmission ratio optimization

· (Optional.) Setting the radio channel usage threshold

· (Optional.) Enabling radio environment monitoring

Enabling or disabling radios

Enabling or disabling all radios

CAUTION:

Disabling all radios terminates wireless services. Use it with caution.

‌

Restrictions and guidelines

This feature takes effect only on manual APs and online auto APs.

Procedure

1. Enter system view.

system-view

2. Enable or disable all radios.

wlan radio { enable | disable }

By default, radios are disabled unless they are already enabled in radio view or an AP group's radio view.

Enabling or disabling a radio

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Enable or disable the radio.

radio { enable | disable }

By default:

¡ In radio view, a radio is enabled if the wlan radio enable command is executed in system view. If the wlan radio enable command is not executed in system view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, a radio is disabled unless it is already enabled by using the wlan radio enable command in system view.

Specifying a radio mode

About this task

Available radio functions vary by radio mode:

· For 802.11a, 802.11b, and 802.11g radios, you can configure basic radio functions.

· For 802.11an and 802.11gn radios, you can configure basic radio functions and 802.11n functions.

· For 802.11ac and 802.11gac radios, you can configure basic radio functions, 802.11n functions, and 802.11ac functions.

Restrictions and guidelines

Support for channels and transmit powers depends on the radio mode. When you change the mode of a radio, the system automatically adjusts the channel and power parameters for the radio.

When you change the radio mode in an AP group's radio view, the default settings for the radio mode related commands are restored.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Specify a radio mode.

type { dot11a | dot11ac | dot11an | dot11b | dot11g | dot11gac | dot11gn }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the default setting for this command varies by AP model.

Configuring basic radio functions

Specifying a working channel

About this task

Perform this task to reduce interference from both wireless and non-wireless devices. You can manually specify a channel or configure the system to automatically select a channel for a radio.

When radar signals are detected on the working channel of a radio, one of the following events occurs:

· If the channel is automatically assigned, the radio changes its channel.

· If the channel is manually specified, the radio changes its channel, and switches back to the specified channel after 30 minutes and then starts the quiet timer. If no radar signals are detected within the quiet time, the radio starts to use the channel. If radar signals are detected within the quiet time, the radio changes it channel again.

Restrictions and guidelines

If you manually specify a channel in the range of 36 to 64, whether the 5.1 GHz band can be used outdoors depends on the device region.

· For outdoor devices that use the 5150 to 5250 Hz band:

¡ China—Not supported.

¡ EU—Not supported.

¡ US—Supported if the maximum effective isotropic radiated power (EIRP) at any elevation angle above 30 degrees does not exceed 125mW and you are to deploy 1000 or fewer devices at a time. To install over 1000 devices at one deployment, contact Federal Communications Commission (FCC) and reduce the total transmit power.

¡ Canada—Not supported.

· For outdoor devices that use the 5250 to 5350 Hz band:

¡ China—Not supported.

¡ EU—Not supported.

¡ US—Supported if Depth First Search (DFS) is used.

¡ Canada—Supported if Depth First Search (DFS) is used.

Specifying a working channel

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Specify a working channel.

channel { channel-number | auto { lock | unlock } }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the AC automatically selects a channel for the radio and does not lock the channel.

Restoring the default working channel mode for all radios

1. Enter system view.

system-view

2. Restore the default working channel mode for all radios.

wlan radio channel default

In default working channel mode, the AC automatically selects a channel for a radio and the channel is unlocked.

This command takes effect on all APs associated with the AC, including offline APs.

Configuring 2.4 GHz radios to use the European channel gap for auto channel selection

About this task

By default, 2.4 GHz radios use non-European channel gap 5 to automatically select channels 1, 6, and 11. You can use this feature to enable the radios to use European channel gap 6 to automatically select channels 1, 7, and 13.

Restrictions and guidelines

Select a channel gap based on channel availability and interference conditions.

Procedure

1. Enter system view.

system-view

2. Enter global configuration view.

wlan global-configuration

3. Configure 2.4 GHz radios to use the European channel gap for auto channel selection.

auto-channel european-gap enable

By default, 2.4 GHz radios use the non-European channel gap for auto channel selection.

Configuring the channel selection blacklist or whitelist

About this task

If you configure the blacklist for an AP, the AP will not select channels in the blacklist. If you configure the whitelist for an AP, the AP will select only channels in the whitelist. You cannot configure both the channel selection blacklist and whitelist for the same AP.

Restrictions and guidelines

This feature takes effect only on APs operating in auto channel selection mode.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Add the specified channels to the channel selection blacklist or whitelist.

channel auto-select { blacklist | whitelist } channel-number

By default:

¡ In radio view, a radio uses the configuration in AP group view.

¡ In an AP group's radio view, no channel selection blacklist or the whitelist exists.

Procedure

1. Enter system view.

system-view

2. Enter radio interface view.

interface wlan-radio interface-number

3. Add the specified channels to the channel selection blacklist or whitelist.

channel auto-select { blacklist | whitelist } channel-number

By default, no channel selection blacklist or the whitelist exists.

Setting the antenna type

About this task

Perform this task to set the antenna type for an AP. The antenna type setting for an AP must be consistent with the type of the antenna used on the AP.

To ensure that the Effective Isotropic Radiated Power (EIRP) is within the correct range, the antenna gain automatically changes after you set the antenna type.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the antenna type.

antenna type antenna-type

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the antenna type is internal.

Setting the antenna gain

About this task

EIRP is the actual transmit power of an antenna, and it is the sum of the antenna gain and the maximum transmit power of the radio.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the antenna gain.

custom-antenna gain antenna-gain

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the antenna gain is 0 dBi.

Setting the maximum transmit power

Restrictions and guidelines

The transmit power range supported by a radio varies by country code, channel, AP model, radio mode, antenna type, and bandwidth mode. If you change these attributes for a radio after you set the maximum transmit power, the configured maximum transmit power might be out of the supported transmit power range. If this happens, the system automatically adjusts the maximum transmit power to a valid value.

If you enable power lock, the locked power becomes the maximum transmit power. For more information about power lock, see "Configuring power lock."

Specifying the maximum transmit power

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the maximum transmit power.

max-power radio-power

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, a radio uses the supported maximum transmit power.

Restoring the default maximum transmit power for all radios

1. Enter system view.

system-view

2. Restore the default maximum transmit power for all radios.

wlan radio max-power default

This command takes effect on all APs associated with the AC, including offline APs.

Configuring power lock

About this task

If you enable power lock, the current power is locked and becomes the maximum transmit power. The locked power still takes effect after the AC restarts.

If you enable power lock, the current power is locked and becomes the maximum transmit power. The locked power still takes effect after the AP restarts.

If a radio enabled with power lock switches to a new channel that provides lower power than the locked power, the maximum power supported by the new channel takes effect.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure power lock.

power-lock { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, power lock is disabled.

Setting transmission rates

About this task

Transmission rates are classified into the following types:

· Prohibited rates—Rates that cannot be used by an AP.

· Mandatory rates—Rates that the clients must support to associate with an AP.

· Supported rates—Rates that an AP supports. After a client associates with an AP, the client can select a higher rate from the supported rates to communicate with the AP. The AP automatically decreases or increases the transmission rate as interference signals, retransmission packets, or dropped packets increase or decrease.

· Multicast rate—Rate at which an AP transmits multicasts and broadcasts. The multicast rate must be selected from the mandatory rates.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the transmission rates for the radio.

rate { multicast { auto | rate-value } | { disabled | mandatory | supported } rate-value }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the default settings are as shown in Table 38.

Table 38 Default radio transmission rates in an AP group's radio view

Protocol	Default radio transmission rates
802.11a/802.11an/802.11ac	· Prohibited rates—None. · Mandatory rates—6, 12, and 24. · Multicast rate—Selected from the mandatory rates. · Supported rates—9, 18, 36, 48, and 54.
802.11b	· Prohibited rates—None. · Mandatory rates—1 and 2. · Multicast rate—Selected from the mandatory rates. · Supported rates—5.5, and 11.
802.11g/802.11gn/802.11gac	· Prohibited rates—None. · Mandatory rates—1, 2, 5.5, and 11. · Multicast rate—Selected from the mandatory rates. · Supported rates—6, 9, 12, 18, 24, 36, 48, and 54.

‌

Setting the beacon interval

About this task

Perform this task to enable an AP to broadcast beacon frames at the specified interval. A short beacon interval enables clients to easily detect the AP but consumes more system resources.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the beacon interval.

beacon-interval interval

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the beacon interval is 100 TU.

Setting the DTIM interval

About this task

An AP periodically broadcasts a beacon compliant with the Delivery Traffic Indication Map (DTIM). After the AP broadcasts the beacon, it sends buffered broadcast and multicast frames based on the value of the DTIM interval. For example, if you set the DTIM interval to 5, the AP sends buffered broadcast and multicast frames every five beacon frames.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the DTIM interval.

dtim counter

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the DTIM interval is 1.

Specifying a collision avoidance mode

About this task

Wireless devices operate in half duplex mode and cannot send and receive data simultaneously. To avoid collision, 802.11 allows wireless devices to send Request to Send (RTS) or Clear to Send (CTS) packets before they transmit data.

You can specify either of the following collision avoidance modes for an AP:

· RTS/CTS—An AP sends an RTS packet to a client before sending data to the client. After receiving the RTS packet, the client sends a CTS packet to the AP. The AP begins to send data after receiving the CTS packet, and other devices that detect the RTS or CTS packet do not send data within a specific time period.

· CTS-to-self—An AP sends a CTS packet with its own MAC address as the destination MAC address before sending data to a client. After receiving the CTS-to-self packet, the AP begins to send data, and other devices that detect the CTS-to-self packet do not send data within a specific time period. The CTS-to-self mode reduces the transmission time but might result in hidden node problems.

To ensure wireless resource efficiency, collision avoidance takes effect only when the following conditions are met:

· The size of the packets to be sent is larger than the RTS threshold 2346 bytes.

· 802.11g or 802.11n protection is enabled. For more information about 802.11g or 802.11n protection, see "Configuring 802.11g protection" and "Configuring 802.11n protection."

Hardware and feature compatibility

Hardware series

Model

Collision avoidance mode compatibility

WA6600 series

WA6638

WA6638i

WA6636

WA6630X

WA6628

WA6628X

WA6622

WA6620

WA6620X

Both the CTS-to-self and RTS-CTS modes are supported.

WA6300 series

WA6338

WA6338-HI

WA6338-LI

WA6330

WA6330-LI

WA6322

Only the RTS-CTS mode is supported.

‌

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Specify a collision avoidance mode.

protection-mode { cts-to-self | rts-cts }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the CTS-to-self mode is used.

Setting the hardware retransmission limits

About this task

In wireless networks, unicast packets require acknowledgements. If a radio fails to receive the acknowledgement for a packet, it retransmits the packet.

You can set hardware retransmission limits for both large frames and small frames. Transmitting large frames requires a large buffer size and a long time because the system performs collision avoidance for large frames before transmission. Therefore, you can set a small hardware retransmission limit for large frames to save system buffer and transmission time.

Hardware and feature compatibility

Hardware series

Model

Hardware retransmission limitscompatibility

WA6600 series

WA6638

WA6638i

WA6636

WA6630X

WA6628

WA6628X

WA6622

WA6620

WA6620X

WA6300 series

WA6338

WA6338-HI

WA6338-LI

WA6330

WA6330-LI

WA6322

Yes

‌

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the hardware retransmission limit for small frames.

short-retry threshold count

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the hardware retransmission limit is 7 for small frames.

5. Set the hardware retransmission limit for large frames.

long-retry threshold count

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the hardware retransmission limit is 4 for large frames.

Setting the maximum number of clients that can associate with an AP

About this task

When the maximum number of clients is reached on an AP, the AP stops accepting new clients and hides its SSIDs. This prevents the AP from being overloaded.

This feature limits clients associated with the AP and the AC separately. If a radio is bound with two service templates enabled with client association at the AP and client association at the AC, the actual maximum number of clients allowed is twice the configured maximum number of clients allowed. In this case, configure this command based on the number of clients expected to come online on a radio.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the maximum number of clients that can associate with the AP.

client max-count max-number

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, no limit is set for the number of clients that can associate with an AP.

Configuring access services for 802.11b clients

About this task

To prevent low-speed 802.11b clients from decreasing wireless data transmission performance, you can enable an 802.11g, 802.11gac, or 802.11gn radio to disable access services for 802.11b clients.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure access services for 802.11b clients.

client dot11b-forbidden { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, a radio accepts 802.11b clients.

Configuring 802.11g protection

About this task

When both 802.11b and 802.11g clients exist in a WLAN, transmission collision might occur because they use different modulation modes. 802.11g protection can avoid such collision. It enables 802.11g, 802.11n, 802.11ac, and 802.11ax devices to send RTS/CTS or CTS-to-self packets to inform 802.11b clients to defer access to the medium. For more information about RTS/CTS or CTS-to-self, see "Specifying a collision avoidance mode."

802.11g, 802.11n, 802.11ac, and 802.11ax devices send RTS/CTS or CTS-to-self packets before sending data only when 802.11b signals are detected on the channel.

802.11g protection automatically takes effect when 802.11b clients associate with an 802.11g, 802.11n (2.4 GHz), 802.11gac, or 802.11gax AP.

Restrictions and guidelines

This feature is applicable only to 802.11g, 802.11n (2.4 GHz), 802.11gac, and 802.11gax radios.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure 802.11g protection.

dot11g protection { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, 802.11g protection is disabled.

Configuring ANI

About this task

Adaptive Noise Immunity (ANI) enables the device to adjust the anti-noise level as required by the environment to reduce interference.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure ANI.

ani { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, ANI is enabled.

Setting the preamble type

About this task

A preamble is a set of bits in a packet header to synchronize transmission signals between sender and receiver. A short preamble improves network performance and a long preamble ensures compatibility with wireless devices using long preambles.

Hardware and feature compatibility

Hardware series

Model

Preamble type compatibility

WA6600 series

WA6638

WA6638i

WA6636

WA6630X

WA6628

WA6628X

WA6622

WA6620

WA6620X

WA6300 series

WA6338

WA6338-HI

WA6338-LI

WA6330

WA6330-LI

WA6322

Yes

‌

Restrictions and guidelines

This feature is applicable only to 802.11b, 802.11g, and 802.11gn radios.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the preamble type.

preamble { long | short }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, a short preamble is used.

Setting the maximum transmission distance

About this task

The strength of wireless signals gradually degrades as the transmission distance increases. The maximum transmission distance of wireless signals depends on the surrounding environment and on whether an external antenna is used.

· Without an external antenna—About 300 meters (984.25 ft).

· With an external antenna—30 km (18.64 miles) to 50 km (31.07 miles).

· In an area with obstacles—35 m (114.83 ft) to 50 m (164.04 ft).

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the maximum transmission distance.

distance distance

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the maximum transmission distance is 1 km (0.62 miles).

Enabling the continuous mode for a radio

About this task

This feature is used for network testing only. Do not use it under any other circumstances.

The feature enables continuous data packet sending at the specified rate. When the feature is enabled, do not perform any other operations except for changing the transmit rate.

For an 802.11a, 802.11b, or 802.11g radio, set the transmit rate. For an 802.11n radio, set the transmit rate or MCS index. For an 802.11ac or 802.11gac radio, set the transmit rate, MCS index, or VHT-MCS index.

Procedure

1. Enter system view.

system-view

2. Enter AP view.

wlan ap ap-name

3. Enter radio view.

radio radio-id

4. Enable the continuous mode for the radio.

continuous-mode { mcs mcs-index | nss nss-index vht-mcs vhtmcs-index | rate rate-value }

By default, the continuous mode is disabled.

Performing on-demand channel usage measurement

About this task

This feature enables an AP to scan supported channels and display the channel usage after scanning. It takes about one second to scan a channel.

Procedure

1. Enter system view.

system-view

2. Enter AP view.

wlan ap ap-name

3. Enter radio view.

radio radio-id

4. Perform on-demand channel usage measurement.

channel-usage measure

Setting the channel usage alarm threshold

About this task

If the actual channel usage exceeds the threshold, the device reports an alarm to the information center.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the channel usage alarm threshold.

channel-usage threshold threshold

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the channel usage alarm threshold is 90%.

Configuring 802.11n functions

NOTE:

802.11n functions are applicable only to 802.11an, 802.11gn, 802.11ac, and 802.11gac radios.

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Configuring the A-MPDU aggregation method

About this task

A MAC Protocol Data Unit (MPDU) is a data frame in 802.11 format. MPDU aggregation aggregates multiple MPDUs into one aggregate MPDU (A-MPDU) to reduce additional information, ACK frames, and Physical Layer Convergence Procedure (PLCP) header overhead. This improves network throughput and channel efficiency.

All MPDUs in an A-MPDU must have the same QoS priority, source address, and destination address.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure the A-MPDU aggregation method.

a-mpdu { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the A-MPDU aggregation method is enabled.

Configuring the A-MSDU aggregation method

About this task

MSDU aggregation aggregates multiple MSDUs into one aggregate MSDU (A-MSDU) to reduce PLCP preamble, PLCP header, and MAC header overheads. This improves network throughput and frame forwarding efficiency.

All MSDUs in an A-MSDU must have the same QoS priority, source address, and destination address. When a device receives an A-MSDU, it restores the A-MSDU to multiple MSDUs for processing.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure the A-MSDU aggregation method.

a-msdu { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the A-MSDU aggregation method is enabled.

Configuring short GI

About this task

802.11 OFDM fragments frames to data blocks for transmission. It uses GI to ensure that the data block transmissions do not interfere with each other and are immune to transmission delays.

The GI used by 802.11a/g is 800 ns. 802.11n supports a short GI of 400 ns, which provides a 10% increase in data rate.

Both the 20 MHz and 40 MHz bandwidth modes support short GI.

Hardware and feature compatibility

Hardware series

Model

Short GI compatibility

WA6600 series

WA6638

WA6638i

WA6636

WA6630X

WA6628

WA6628X

WA6622

WA6620

WA6620X

WA6300 series

WA6338

WA6338-HI

WA6338-LI

WA6330

WA6330-LI

WA6322

Yes

‌

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure short GI.

short-gi { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, short GI is enabled.

Configuring LDPC

About this task

802.11n introduces the Low-Density Parity Check (LDPC) mechanism to increase the signal-to-noise ratio and enhance transmission quality. LDPC takes effect only when both ends support LDPC.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-number

4. Configure LDPC.

ldpc { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, LDPC is enabled.

Configuring STBC

About this task

The Space-Time Block Coding (STBC) mechanism enhances the reliability of data transmission and does not require clients to have high transmission rates.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-number

4. Configure STBC.

stbc { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, STBC is enabled.

Setting MCS indexes

About this task

802.11n clients use the rate corresponding to the MCS index to send unicast frames. 802.11a/b/g clients use the 802.11a/b/g rate to send unicast frames.

If you do not set a multicast MCS index, 802.11n clients and the AP use the 802.11a/b/g multicast rate to send multicast frames. If you set a multicast MCS index, one of following events occurs:

· The AP and clients use the rate corresponding to the multicast MCS index to send multicast frames if only 802.11n and 802.11ac clients exist.

· The AP and clients use the 802.11a/b/g multicast rate to send multicast frames if any 802.11a/b/g clients exist.

When you set the maximum mandatory or supported MCS index, you are specifying a range. For example, if you set the maximum mandatory MCS index to 5, rates corresponding to MCS indexes 0 through 5 are configured as 802.11n mandatory rates.

Restrictions and guidelines

The multicast MCS index cannot be greater than the maximum mandatory MCS index.

The maximum supported MCS index cannot be smaller than the maximum mandatory MCS index.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the maximum mandatory MCS index.

dot11n mandatory maximum-mcs index

By default:

¡ In radio view, the default settings are as follows:

- No maximum mandatory MCS index is set if the maximum supported MCS index is set.

- The radio uses the configuration in an AP group's radio view if the maximum supported MCS index is not set.

¡ In an AP group's radio view, no maximum mandatory MCS index is set.

5. Set the maximum supported MCS index.

dot11n support maximum-mcs index

By default:

¡ In radio view, the default settings are as follows:

- The maximum supported MCS index is 76 if the maximum mandatory MCS index is set.

- The radio uses the configuration in an AP group's radio view if the maximum mandatory MCS index is not set.

¡ In an AP group's radio view, the maximum supported MCS index is 76.

6. Set the multicast MCS index.

dot11n multicast-mcs index

By default:

¡ In radio view, the default settings are as follows:

- No multicast MCS index is set if the maximum supported MCS index or the maximum mandatory MCS index is set.

- The radio uses the configuration in an AP group's radio view if neither the maximum supported MCS index nor the maximum mandatory MCS index is set.

¡ In an AP group's radio view, no multicast MCS index is set.

Configuring the client dot11n-only feature

About this task

To prevent low-speed 802.11a/b/g clients from decreasing wireless data transmission performance, you can enable the client dot11n-only feature for an AP to accept only 802.11n and 802.11ac clients.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure the client dot11n-only feature.

client dot11n-only { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the client dot11n-only feature is disabled.

Setting the 802.11n bandwidth mode

About this task

802.11n uses the channel structure of 802.11a/b/g, but it increases the number of data subchannels in each 20 MHz channel to 52. This improves data transmission rate.

802.11n binds two adjacent 20 MHz channels to form a 40 MHz channel (one primary channel and one secondary channel). This provides a simple way to double the data rate.

If the current channel of a radio does not support the specified bandwidth mode, the radio clears the channel configuration and selects another channel.

If the bandwidth mode is set to 40 MHz, the radio uses the 40 MHz bandwidth if two adjacent channels that can be bound together exist. If there are no adjacent channels that can be bound together, the radio uses the 20 MHz bandwidth.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the 802.11n bandwidth mode.

channel band-width { 20 | 40 [ auto-switch ] }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the bandwidth mode is 40 MHz for 802.11an radios and 20 MHz for 802.11gn radios.

Only 802.11gn radios support the auto-switch keyword.

Specifying a MIMO mode

About this task

Multiple-input and multiple-output (MIMO) enables a radio to send and receive wireless signals through multiple spatial streams. This improves system capacity and spectrum usage without requiring higher bandwidth.

A radio can operate in one of the following MIMO modes:

· 1x1—Sends and receives wireless signals through one spatial stream.

· 2x2—Sends and receives wireless signals through two spatial streams.

· 3x3—Sends and receives wireless signals through three spatial streams.

· 4x4—Sends and receives wireless signals through four spatial streams.

· 5x5—Sends and receives wireless signals through five spatial streams.

· 6x6—Sends and receives wireless signals through six spatial streams.

· 7x7—Sends and receives wireless signals through seven spatial streams.

· 8x8—Sends and receives wireless signals through eight spatial streams.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Specify a MIMO mode.

mimo { 1x1 | 2x2 | 3x3 | 4x4 | 5x5 | 6x6 | 7x7 | 8x8 }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the default MIMO mode for a radio varies by AP model.

Configuring energy saving

About this task

After you enable the energy-saving feature, the MIMO mode of a radio automatically changes to 1x1 if no clients associate with the radio and the radio is not configured with WIPS.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure energy saving.

green-energy-management { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, energy saving is disabled.

Configuring 802.11n protection

About this task

When both 802.11n and non-802.11n clients exist in a WLAN, transmission collision might occur because they use different modulation modes. 802.11n protection can avoid such collision. It enables 802.11n devices to send RTS/CTS or CTS-to-self packets to inform non-802.11n clients to defer access to the medium.

802.11n devices send RTS/CTS or CTS-to-self packets before sending data only when non-802.11n signals are detected on the channel.

802.11n protection automatically takes effect when non-802.11n clients associate with an 802.11n AP.

NOTE:

802.11n devices refer to 802.11nand 802.11ac devices.

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Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure 802.11n protection.

dot11n protection { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, 802.11n protection is disabled.

Configuring 802.11ac functions

NOTE:

802.11ac functions are applicable only to 802.11ac and 802.11gac radios.

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Setting NSSs

About this task

If an AP supports an NSS, it supports all VHT-MCS indexes for the NSS. 802.11ac clients that use the rate corresponding to the VHT-MCS index for the NSS to send unicast frames. Non-802.11ac clients use the 802.11a/b/g/n rate to send unicast frames.

If you do not set a multicast NSS, 802.11ac clients and the AP use the 802.11a/b/g/n multicast rate to send multicast frames. If you set a multicast NSS and specify a VHT-MCS index, the following situations occur:

· The AP and clients use the rate corresponding to the VHT-MCS index to send multicast frames if all clients are 802.11ac clients.

· The AP and clients use the 802.11a/b/g/n multicast rate to send multicast frames if any non-802.11ac clients exist.

The maximum mandatory NSS or supported NSS determines a range of 802.11 rates. For example, if the maximum mandatory NSS is 5, rates corresponding to VHT-MCS indexes for NSSs 1 through 5 will be 802.11ac mandatory rates.

Restrictions and guidelines

The maximum supported NSS cannot be smaller than the maximum mandatory NSS and the multicast NSS cannot be greater than the maximum mandatory NSS.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the maximum mandatory NSS.

dot11ac mandatory maximum-nss nss-number

By default:

¡ In radio view, the default settings are as follows:

- If the multicast NSS or the maximum supported NSS is set, no maximum mandatory NSS is set.

- If neither the multicast NSS nor the maximum supported NSS is set, the radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, no maximum mandatory NSS is set.

5. Set the maximum supported NSS.

dot11ac support maximum-nss nss-number

By default:

¡ In radio view, the default settings are as follows:

- If the multicast NSS or the maximum mandatory NSS is set, the maximum supported NSS is 8.

- If neither the multicast NSS nor the maximum mandatory NSS is set, the radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the maximum supported NSS is 8.

6. Set the multicast NSS and specify a VHT-MCS index.

dot11ac multicast-nss nss-number vht-mcs index

By default:

¡ In radio view, the default settings are as follows:

- If the maximum supported NSS or the maximum mandatory NSS is set, no multicast NSS is set.

- If neither the maximum supported NSS nor the maximum mandatory NSS is set, the radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, no multicast NSS is set.

Configuring the client dot11ac-only feature

About this task

To prevent low-speed 802.11a/b/g/n clients from decreasing wireless data transmission performance, you can enable the client dot11ac-only feature for an AP to accept only 802.11ac clients.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure the client dot11ac-only feature.

client dot11ac-only { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the client dot11ac-only feature is disabled.

Setting the 802.11ac bandwidth mode

About this task

802.11ac uses the channel structure of 802.11n and increases the maximum bandwidth from 40 MHz to 160 MHz. 802.11ac can bind two adjacent 20/40/80 MHz channels to form a 40/80/160 MHz channel.

The radio uses the specified 40/80 MHz bandwidth if adjacent channels can be bound to form a 40/80 channel. If adjacent channels cannot form a 40/80 channel, the radio uses the next available bandwidth lower than the specified one.

For example, the bandwidth mode is set to 80 MHz. The radio uses the 80 MHz bandwidth if adjacent channels that can be bound together exist. If adjacent channels that can be bound to an 80 MHz channel do not exist, but two adjacent channels that can be bound to a 40 MHz channel exist, the 40 MHz bandwidth is used. If no adjacent channels that can be bound together exist, the radio uses the 20 MHz bandwidth.

After a working channel is specified, the device automatically selects a secondary channel. The working channel forwards all packets and the secondary channel forwards only data packets.

If the current channel of a radio does not support the specified bandwidth mode, the radio clears the channel configuration and selects another channel.

Figure 1 802.11ac bandwidth modes

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Restrictions and guidelines

802.11gac supports only the 20 MHz and 40 MHz bandwidth modes.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the 802.11ac bandwidth mode:

channel band-width { 20 | 40 | 80 | 160 }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the bandwidth mode is 80 MHz for 802.11ac radios.

5. Set the 802.11gac bandwidth mode:

channel band-width { 20 | 40 }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the bandwidth mode is 20 MHz for 802.11gac radios.

Configuring 802.11ax functions

NOTE:

· Support for 802.11ax depends on the device model.

· 802.11ax functions are applicable only to 802.11ax and 802.11gax radios.

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Setting NSSs

About this task

If an AP supports an NSS, it supports all HE-MCS indexes for the NSS. 802.11ax clients that use the rate corresponding to the HE-MCS index for the NSS to send unicast frames. Non-802.11ax clients use the 802.11a/b/g rate, or the rate corresponding to the MCS or VHT-MCS index for the NSS to send unicast frames.

If you do not set a multicast NSS, 802.11ax clients and the AP use the 802.11a/b/g/n/ac multicast rate to send multicast frames. If you set a multicast NSS and specify an HE-MCS index, the following situations occur:

· The AP and clients use the rate corresponding to the HE-MCS index to send multicast frames if all clients are 802.11ax clients.

· The AP and clients use the 802.11a/b/g/n/ac multicast rate to send multicast frames if any non-802.11ax clients exist.

The maximum mandatory NSS or supported NSS determines a range of 802.11 rates. For example, if the maximum mandatory NSS is 5, rates corresponding to HE-MCS indexes for NSSs 1 through 5 will be 802.11ax mandatory rates.

Restrictions and guidelines

The maximum supported NSS cannot be smaller than the maximum mandatory NSS and the multicast NSS cannot be greater than the maximum mandatory NSS.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the maximum mandatory NSS.

dot11ax mandatory maximum-nss nss-number

By default:

¡ In radio view, the default settings are as follows:

- If the multicast NSS or the maximum supported NSS is set, no maximum mandatory NSS is set.

- If neither the multicast NSS nor the maximum supported NSS is set, the radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, no maximum mandatory NSS is set.

5. Set the maximum supported NSS.

dot11ax support maximum-nss nss-number

By default:

¡ In radio view, the default settings are as follows:

- If the multicast NSS or the maximum mandatory NSS is set, the maximum supported NSS is 8.

- If neither the multicast NSS nor the maximum mandatory NSS is set, the radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the maximum supported NSS is 8.

6. Set the multicast NSS and specify an HE-MCS index.

dot11ax multicast-nss nss-number he-mcs index

By default:

¡ In radio view, the default settings are as follows:

- If the maximum supported NSS or the maximum mandatory NSS is set, no multicast NSS is set.

- If neither the maximum supported NSS nor the maximum mandatory NSS is set, the radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, no multicast NSS is set and no HE-MCS is specified.

Configuring the client dot11ax-only feature

About this task

To prevent low-speed 802.11a/b/g/n/ac clients from decreasing wireless data transmission performance, you can enable the client dot11ax-only feature for an AP to accept only 802.11ax clients.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure the client dot11ax-only feature.

client dot11ax-only { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the client dot11ax-only feature is disabled.

Procedure

1. Enter system view.

system-view

2. Enter radio interface view.

interface wlan-radio interface-number

3. Configure the client dot11ax-only feature.

client dot11ax-only { disable | enable }

By default, the client dot11ax-only feature is disabled.

Setting the 802.11ax bandwidth mode

About this task

802.11ax uses the channel structure of 802.11n and increases the maximum bandwidth from 40 MHz to 160 MHz. 802.11ax can bind two adjacent 20/40/80 MHz channels to form a 40/80/160 MHz channel.

The radio uses the specified 40/80/160 MHz bandwidth if adjacent channels can be bound to form a 40/80/160 channel. If adjacent channels cannot form a 40/80/160 channel, the radio uses the next available bandwidth lower than the specified one.

When the bandwidth mode is set to 80+80 MHz, the radio uses the 160 MHz bandwidth if two adjacent 80 MHz channels that can be bound together exist. If a 160 MHz channel cannot be formed but two non-adjacent 80 MHz channels are available, the radio uses the two 80 MHz channels to achieve the 160 MHz bandwidth.

The device automatically selects a secondary channel. The working channel forwards all packets and the secondary channel forwards only data packets.

If the current channel of a radio does not support the specified bandwidth mode, the radio clears the channel configuration and selects another channel.

NOTE:

Support for the 160 MHz and 80+80 MHz bandwidth modes depends on the device model.

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Figure 2 802.11ax bandwidth modes

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Restrictions and guidelines

802.11gax supports only the 20 MHz and 40 MHz bandwidth modes.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the 802.11ax bandwidth mode:

channel band-width { 20 | 40 | 80 | 160}

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the bandwidth mode is 80 MHz for 802.11ax radios.

Support for the 160 keywords depends on the AP model.

5. Set the 802.11gax bandwidth mode:

channel band-width { 20 | 40 [ auto-switch ] }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the bandwidth mode is 20 MHz for 802.11gax radios.

Configuring the smart antenna feature

About this task

This feature is applicable only to 802.11n and 802.11ac radios.

The smart antenna feature enables an AP to automatically adjust the antenna parameters based on the client location and channel information to improve signal quality and stability.

You can configure a radio to operate in one of the following smart antenna modes:

· Auto—Uses the high availability mode for audio and video packets, and uses the high throughput mode for other packets.

· High-availability—Applicable to WLANs that require stable bandwidth, this mode reduces noise and interference impacts, and provides guaranteed bandwidth for clients.

· High-throughput—Applicable to WLANs that require high performance, this mode enhances signal strength and association capability.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Configure the smart antenna feature.

smart-antenna { disable | enable }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the smart antenna feature is enabled.

5. Specify a smart antenna mode.

smart-antenna policy { auto | high-availability | high-throughput }

By default:

¡ In radio view, a radio uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, the auto mode is used.

Configuring error packet ratio optimization and retransmission ratio optimization

About this task

This feature enables the device to recalculate the error packet ratio and retransmission ratio by using the specified indexes to get smaller ratio values.

Procedure

1. Enter system view.

system-view

2. Set the index for optimizing the error packet ratio.

wlan error-frame optimization value

By default, the index for optimizing the error packet ratio is not set.

3. Set the index for optimizing the retransmission ratio.

wlan retransmit-frame optimization value

By default, the index for optimizing the retransmission ratio is not set.

Setting the radio channel usage threshold

About the radio channel usage threshold

CAUTION:

Adjusting the radio usage threshold might affect online clients. Please use this feature with caution.

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The system hides the SSID of a radio if the radio's channel usage exceeds the threshold. To associate with the radio when the SSID is hidden, clients must perform active scanning.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Set the radio channel usage threshold.

sacp ssid-hide channel-usage-threshold threshold

By default:

¡ In AP view, an AP uses the configuration in AP group view.

¡ In AP group view, the radio channel usage threshold is 100%.

Enabling radio environment monitoring

About this task

This feature enables an AP to scan the wireless environment, collect environment data, and report the data to the AC periodically. The AC uses the data reported by APs to generate channel and neighbor reports. To view the reports, execute the display wlan rrm-status ap command.

Procedure

1. Enter system view.

system-view

2. Enter AP view or an AP group's AP model view.

¡ Enter AP view.

wlan ap ap-name

¡ Execute the following commands in sequence to enter an AP group's AP model view:

wlan ap-group group-name

ap-model ap-model

3. Enter radio view.

radio radio-id

4. Enable radio environment monitoring.

environment-monitor enable

By default:

¡ In radio view, the AP uses the configuration in an AP group's radio view.

¡ In an AP group's radio view, radio environment monitoring is disabled.

Display and maintenance commands for radio management

Execute display commands in any view and reset commands in user view.

Task	Command
Display information about the continuous mode.	display wlan ap { all \| name ap-name } continuous-mode
Display AP radio information.	display wlan ap { all \| name ap-name } radio [ frequency-band { 5 \| 2.4 } ]
Display radio channel information.	display wlan ap { all \| name ap-name } radio channel
Display radio type information.	display wlan ap { all \| name ap-name } radio type
Display radio statistics.	display wlan statistics ap { all \| name ap-name } radio
Reassign working channels.	reset wlan channel all
Clear radio statistics.	reset wlan statistics ap { all \| name ap-name } radio

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Radio management configuration examples

Example: Configuring basic radio functions

Network configuration

As shown in Figure 3, create a manual AP and set the radio mode, working channel, and maximum transmit power to 802.11gn, channel 11, and 19 dBm, respectively.

Figure 3 Network diagram

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Procedure

# Create manual AP ap1, and specify its model and serial ID.

<AC> system-view

[AC] wlan ap ap1 model WA6330

[AC-wlan-ap-ap1] serial-id 219801A28N819CE0002T

# Enter radio view of radio 2.

[AC-wlan-ap-ap1] radio 2

# Set the radio mode to dot11gn.

[AC-wlan-ap-ap1-radio-2] type dot11gn

# Configure radio 2 to work on channel 11.

[AC-wlan-ap-ap1-radio-2] channel 11

# Set the maximum transmit power to 19 dBm.

[AC-wlan-ap-ap1-radio-2] max-power 19

# Enable radio 2.

[AC-wlan-ap-ap1-radio-2] radio enable

[AC-wlan-ap-ap1-radio-2] return

Verifying the configuration

# Display information about all radios.

<AC> display wlan ap all verbose

Total number of APs: 1

Total number of connected APs: 1

Total number of connected manual APs: 1

Total number of connected auto APs: 0

Total number of connected common APs: 1

Total number of connected WTUs: 0

Total number of inside APs: 0

Maximum supported APs: 6144

Remaining APs: 6144

Total AP licenses: 128

local AP licenses: 0

Server AP licenses: 0

Remaining local AP licenses: 127

Sync AP licenses: 0

AP name : ap1

AP ID : 1

AP group name : default-group

State : Run

Backup Type : Master

Online time : 0 days 1 hours 25 minutes 12 seconds

System up time : 0 days 2 hours 22 minutes 12 seconds

Model : WA6330

Region code : CN

Region code lock : Disable

Serial ID : 219801A28N819CE0002T

MAC address : 0AFB-423B-893C

IP address : 192.168.1.50

UDP control port number : 65488

UDP data port number : N/A

H/W version : Ver.C

S/W version : V700R001B49D001

Boot version : 1.01

USB state : N/A

Power level : N/A

Power info : N/A

Description : wtp1

Priority : 4

Echo interval : 10 seconds

Echo count : 3 counts

Keepalive interval : 10 seconds

Discovery-response wait-time : 2 seconds

Statistics report interval : 50 seconds

Fragment size (data) : 1500

Fragment size (control) : 1450

MAC type : Local MAC & Split MAC

Tunnel mode : Local Bridging & 802.3 Frame & Native Frame

CAPWAP data-tunnel status : Down

Discovery type : Static Configuration

Retransmission count : 3

Retransmission interval : 5 seconds

Firmware upgrade : Enabled

Sent control packets : 1

Received control packets : 1

Echo requests : 147

Lost echo responses : 0

Average echo delay : 3

Last reboot reason : User soft reboot

Latest IP address : 10.1.0.2

Current AC IP : N/A

Tunnel down reason : Request wait timer expired

Connection count : 1

Backup IPv4 : Not configured

Backup IPv6 : Not configured

Ctrl-tunnel encryption : Disabled

Ctrl-tunnel encryption state : Not encrypted

Data-tunnel encryption : Disabled

Data-tunnel encryption state : Not encrypted

LED mode : Normal

Remote configuration : Enabled

EnergySaving Level : 0

AP type : Normal AP

Radio 1:

BSSID : 7848-59f6-3940

State : Up

Type : 802.11ax

Antenna type : internal

Client dot11ac-only : Disabled

Client dot11n-only : Disabled

Channel band-width : 20/40/80MHz

Active band-width : 20/40/80MHz

Secondary channel offset : SCB

Short GI for 20MHz : Supported

Short GI for 40MHz : Supported

Short GI for 80MHz : Supported

Short GI for 160MHz : Not supported

MIMO : Not Config

Green-Energy-Management : Disabled

A-MSDU : Enabled

A-MPDU : Enabled

LDPC : Not Supported

STBC : Supported

Operational VHT-MCS Set:

Mandatory : Not configured

Supported : NSS1 0,1,2,3,4,5,6,7,8,9

NSS2 0,1,2,3,4,5,6,7,8,9

Multicast : Not configured

Operational HT MCS Set:

Mandatory : Not configured

Supported : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,

10, 11, 12, 13, 14, 15

Multicast : Not configured

Channel : 36(auto)

Channel usage(%) : 0

Max power : 20 dBm

Operational rate:

Mandatory : 6, 12, 24 Mbps

Multicast : Auto

Supported : 9, 18, 36, 48, 54 Mbps

Disabled : Not configured

Distance : 1 km

ANI : Enabled

Fragmentation threshold : 2346 bytes

Beacon interval : 100 TU

Protection threshold : 2346 bytes

Long retry threshold : 4

Short retry threshold : 7

Frame aging time in cache : 2000 ms

Noise Floor : –102 dBm

Protection mode : cts-to-self

MU-TxBF : Disabled

SU-TxBF : Disabled

Continuous mode : N/A

Client dot11ax-only : Disabled

Operational HE-MCS Set:

Mandatory : Not configured

Supported : NSS1 0,1,2,3,4,5,6,7,8,9,10,11

NSS2 0,1,2,3,4,5,6,7,8,9,10,11

Multicast : Not configured

OFDMA random access RUs : Not Supported

Channel Width Set : 0x02

DL-OFDMA : Disabled

UL-OFDMA : Disabled

UL-MU-MIMO : Disabled

BSS-COLOR : Disabled

TWT negotiation : Disabled

HT protection mode : No protection

Radio 2:

Basic BSSID : 7848-59f6-3950

Admin state : Up

Radio type : 802.11n(2.4GHz)

Antenna type : internal

Client dot11n-only : Disabled

Channel band-width : 20MHz

Active band-width : 20MHz

Secondary channel offset : SCN

Short GI for 20MHz : Supported

Short GI for 40MHz : Supported

A-MSDU : Enabled

A-MPDU : Enabled

LDPC : Not Supported

STBC : Supported

Operational HT MCS Set:

Mandatory : Not configured

Supported : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,

10, 11, 12, 13, 14, 15

Multicast : Not configured

Channel : 11

Channel usage(%) : 0

Max power : 19 dBm

Preamble type : Short

Operational rate:

Mandatory : 1, 2, 5.5, 11 Mbps

Multicast : Auto

Supported : 6, 9, 12, 18, 24, 36, 48, 54 Mbps

Disabled : Not configured

Distance : 1 km

ANI : Enabled

Fragmentation threshold : 2346 bytes

Beacon interval : 100 TU

Protection threshold : 2346 bytes

Long retry threshold : 4

Short retry threshold : 7

Frame aging time in cache : 2000 ms

Noise Floor : -105 dBm

Protection mode : cts-to-self

Continuous mode : N/A

HT protection mode : No protection

08-Radio Resources Management

MCS types

MCS parameters

VHT-MCS types

VHT-MCS parameters

HE-MCS types

HE-MCS parameters

Restrictions and guidelines

About this task

Restrictions and guidelines

Procedure

About this task

Restrictions and guidelines

Specifying a working channel

About this task

Restrictions and guidelines

Procedure

About this task

Restrictions and guidelines

Procedure

Procedure

About this task

Procedure

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Procedure

Restrictions and guidelines

Specifying the maximum transmit power

Restoring the default maximum transmit power for all radios

About this task

Procedure

Setting transmission rates

Procedure

About this task

Procedure

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Procedure

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Hardware and feature compatibility

Procedure

About this task

Hardware and feature compatibility

Procedure

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Procedure

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Restrictions and guidelines

Procedure

About this task

Procedure

Setting the preamble type

About this task

Hardware and feature compatibility

Restrictions and guidelines

Procedure

Setting the maximum transmission distance

About this task

Procedure

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Procedure

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Procedure

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Procedure

Configuring 802.11n functions

About this task

Procedure

Configuring the A-MSDU aggregation method

About this task

Procedure

About this task

Hardware and feature compatibility

Procedure

Configuring LDPC

About this task

Procedure

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Procedure

About this task