Hi,

I use a Intel Dual Band Wireless-N 7265. The OS is Linux Debian 8 (Kernel 
3.16.0-4_amd64).


 
Do you know the limit of the number of users connected at the same time on the 
wifi? Works fine with 14 connected devices but not more.

How to increase it?

This limit is hardware?

I can't find information about this.


# Technical information

iw list


Wiphy phy0

        max # scan SSIDs: 20

        max scan IEs length: 393 bytes

        Retry short limit: 7

        Retry long limit: 4

        Coverage class: 0 (up to 0m)

        Device supports RSN-IBSS.

        Device supports AP-side u-APSD.

        Supported Ciphers:

                * CCMP (00-0f-ac:4)

                * TKIP (00-0f-ac:2)

                * WEP40 (00-0f-ac:1)

                * WEP104 (00-0f-ac:5)

                * CMAC (00-0f-ac:6)

                * WPI-SMS4 (00-14-72:1)

        Available Antennas: TX 0 RX 0

        Supported interface modes:

                 * IBSS

                 * managed

                 * AP

                 * AP/VLAN

                 * monitor

                 * P2P-client

                 * P2P-GO

                 * P2P-device

        Band 1:

                Capabilities: 0x11e2

                        HT20/HT40

                        Static SM Power Save

                        RX HT20 SGI

                        RX HT40 SGI

                        TX STBC

                        RX STBC 1-stream

                        Max AMSDU length: 3839 bytes

                        DSSS/CCK HT40

                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)

                Minimum RX AMPDU time spacing: 4 usec (0x05)

                HT TX/RX MCS rate indexes supported: 0-15, 32

                Bitrates (non-HT):

                        * 1.0 Mbps

                        * 2.0 Mbps (short preamble supported)

                        * 5.5 Mbps (short preamble supported)

                        * 11.0 Mbps (short preamble supported)

                        * 6.0 Mbps

                        * 9.0 Mbps

                        * 12.0 Mbps

                        * 18.0 Mbps

                        * 24.0 Mbps

                        * 36.0 Mbps

                        * 48.0 Mbps

                        * 54.0 Mbps

                Frequencies:

                        * 2412 MHz [1] (20.0 dBm)

                        * 2417 MHz [2] (20.0 dBm)

                        * 2422 MHz [3] (20.0 dBm)

                        * 2427 MHz [4] (20.0 dBm)

                        * 2432 MHz [5] (20.0 dBm)

                        * 2437 MHz [6] (20.0 dBm)

                        * 2442 MHz [7] (20.0 dBm)

                        * 2447 MHz [8] (20.0 dBm)

                        * 2452 MHz [9] (20.0 dBm)

                        * 2457 MHz [10] (20.0 dBm)

                        * 2462 MHz [11] (20.0 dBm)

                        * 2467 MHz [12] (20.0 dBm) (no IR)

                        * 2472 MHz [13] (20.0 dBm) (no IR)

        Band 2:

                Capabilities: 0x11e2

                        HT20/HT40

                        Static SM Power Save

                        RX HT20 SGI

                        RX HT40 SGI

                        TX STBC

                        RX STBC 1-stream

                        Max AMSDU length: 3839 bytes

                        DSSS/CCK HT40

                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)

                Minimum RX AMPDU time spacing: 4 usec (0x05)

                HT TX/RX MCS rate indexes supported: 0-15, 32

                VHT Capabilities (0x038071a0):

                        Max MPDU length: 3895

                        Supported Channel Width: neither 160 nor 80+80

                        short GI (80 MHz)

                        TX STBC

                        SU Beamformee

                VHT RX MCS set:

                        1 streams: MCS 0-9

                        2 streams: MCS 0-9

                        3 streams: not supported

                        4 streams: not supported

                        5 streams: not supported

                        6 streams: not supported

                        7 streams: not supported

                        8 streams: not supported

                VHT RX highest supported: 0 Mbps

                VHT TX MCS set:

                        1 streams: MCS 0-9

                        2 streams: MCS 0-9

                        3 streams: not supported

                        4 streams: not supported

                        5 streams: not supported

                        6 streams: not supported

                        7 streams: not supported

                        8 streams: not supported

                VHT TX highest supported: 0 Mbps

                Bitrates (non-HT):

                        * 6.0 Mbps

                        * 9.0 Mbps

                        * 12.0 Mbps

                        * 18.0 Mbps

                        * 24.0 Mbps

                        * 36.0 Mbps

                        * 48.0 Mbps

                        * 54.0 Mbps

                Frequencies:

                        * 5180 MHz [36] (20.0 dBm) (no IR)

                        * 5200 MHz [40] (20.0 dBm) (no IR)

                        * 5220 MHz [44] (20.0 dBm) (no IR)

                        * 5240 MHz [48] (20.0 dBm) (no IR)

                        * 5260 MHz [52] (20.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5280 MHz [56] (20.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5300 MHz [60] (20.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5320 MHz [64] (20.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5500 MHz [100] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5520 MHz [104] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5540 MHz [108] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5560 MHz [112] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5580 MHz [116] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5600 MHz [120] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5620 MHz [124] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5640 MHz [128] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5660 MHz [132] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5680 MHz [136] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5700 MHz [140] (22.0 dBm) (no IR, radar detection)

                          DFS state: usable (for 544 sec)

                          DFS CAC time: 60000 ms

                        * 5720 MHz [144] (disabled)

                        * 5745 MHz [149] (disabled)

                        * 5765 MHz [153] (disabled)

                        * 5785 MHz [157] (disabled)

                        * 5805 MHz [161] (disabled)

                        * 5825 MHz [165] (disabled)

        Supported commands:

                 * new_interface

                 * set_interface

                 * new_key

                 * start_ap

                 * new_station

                 * new_mpath

                 * set_mesh_config

                 * set_bss

                 * authenticate

                 * associate

                 * deauthenticate

                 * disassociate

                 * join_ibss

                 * join_mesh

                 * remain_on_channel

                 * set_tx_bitrate_mask

                 * frame

                 * frame_wait_cancel

                 * set_wiphy_netns

                 * set_channel

                 * set_wds_peer

                 * start_sched_scan

                 * probe_client

                 * set_noack_map

                 * register_beacons

                 * start_p2p_device

                 * set_mcast_rate

                 * Unknown command (104)

                 * connect

                 * disconnect

        Supported TX frame types:

                 * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 
0xb0 0xc0 0xd0 0xe0 0xf0

                 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 
0xa0 0xb0 0xc0 0xd0 0xe0 0xf0

                 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 
0xb0 0xc0 0xd0 0xe0 0xf0

                 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 
0xa0 0xb0 0xc0 0xd0 0xe0 0xf0

                 * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 
0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0

                 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 
0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0

                 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 
0xa0 0xb0 0xc0 0xd0 0xe0 0xf0

                 * P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 
0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0

        Supported RX frame types:

                 * IBSS: 0x40 0xb0 0xc0 0xd0

                 * managed: 0x40 0xd0

                 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0

                 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0

                 * mesh point: 0xb0 0xc0 0xd0

                 * P2P-client: 0x40 0xd0

                 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0

                 * P2P-device: 0x40 0xd0

        WoWLAN support:

                 * wake up on disconnect

                 * wake up on magic packet

                 * wake up on pattern match, up to 20 patterns of 16-128 bytes,

                   maximum packet offset 0 bytes

                 * can do GTK rekeying

                 * wake up on GTK rekey failure

                 * wake up on EAP identity request

                 * wake up on 4-way handshake

                 * wake up on rfkill release

                 * wake up on TCP connection

        software interface modes (can always be added):

                 * AP/VLAN

                 * monitor

        valid interface combinations:

                 * #{ managed } <= 1, #{ AP, P2P-client, P2P-GO } <= 1, #{ 
P2P-device } <= 1,

                   total <= 3, #channels <= 1

        HT Capability overrides:

                 * MCS: ff ff ff ff ff ff ff ff ff ff

                 * maximum A-MSDU length

                 * supported channel width

                 * short GI for 40 MHz

                 * max A-MPDU length exponent

                 * min MPDU start spacing

        Device supports TX status socket option.

        Device supports HT-IBSS.

        Device supports SAE with AUTHENTICATE command

        Device supports scan flush.

        Device supports per-vif TX power setting

        P2P GO supports CT window setting

        P2P GO supports opportunistic powersave setting

        Driver supports a userspace MPM

 

lspci | grep "Network"

 

02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 61)

 

nano /etc/hostapd/hostapd.conf

 

country_code=FR

driver=nl80211

ssid=SSID-TEST

interface=wlan0

hw_mode=g

channel=5

wmm_enabled=1

auth_algs=1

ieee80211n=1

ht_capab=[SHORT-GI-40][HT40+][HT40-][DSSS_CCK-40][SHORT-GI-20][SHORT-GI-40]

     
 

 
Best regards. 
       
Mickaël PANNEQUIN

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