Question on [HT40+][HT40-] on channel 11.

[Ben Greear]

I'm using the following configuration.  My plan was to allow hostapd to figure
out if it needed to do ht40+ v/s ht40-, but it seems it tries ht40+ in this
case, and fails and exits.  Is this a bug in hostapd or am I just using it wrong?

interface=vap0
driver=nl80211
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
dump_file=/home/lanforge/wifi/hostapd_vap0.dump
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
ssid=ben-138
bssid=80:01:02:03:04:05
country_code=US
ieee80211d=0
hw_mode=g
ieee80211n=1
channel=11
beacon_int=240
dtim_period=2
max_num_sta=2007
rts_threshold=2347
fragm_threshold=2346
preamble=0
macaddr_acl=0
auth_algs=3
ignore_broadcast_ssid=0
# Enable HT modes if you want 300Mbps+ throughput.
#ht_capab=[HT20][HT40-][HT40+][GF][SHORT-GI-20][SHORT-GI-40]
#         [TX-STBC][RX-STBC123][MAX-AMSDU-7935][DSSS_CCK-40][PSMP][LSIG-TXOP-PROT]
ht_capab=[HT20][HT40+][HT40-][SHORT-GI-40][SHORT-GI-20]
wmm_enabled=1
wmm_ac_bk_cwmin=4
wmm_ac_bk_cwmax=10
wmm_ac_bk_aifs=7
wmm_ac_bk_txop_limit=0
wmm_ac_bk_acm=0
wmm_ac_be_aifs=3
wmm_ac_be_cwmin=4
wmm_ac_be_cwmax=10
wmm_ac_be_txop_limit=0
wmm_ac_be_acm=0
wmm_ac_vi_aifs=2
wmm_ac_vi_cwmin=3
wmm_ac_vi_cwmax=4
wmm_ac_vi_txop_limit=94
wmm_ac_vi_acm=0
wmm_ac_vo_aifs=2
wmm_ac_vo_cwmin=2
wmm_ac_vo_cwmax=3
wmm_ac_vo_txop_limit=47
wmm_ac_vo_acm=0
ieee8021x=0
eapol_key_index_workaround=0
eap_server=0
own_ip_addr=127.0.0.1


vap0: IEEE 802.11 Configured HT40 secondary channel (15) not found from the channel list of current mode (1) IEEE 802.11g
vap0: IEEE 802.11 Configured channel (11) not found from the channel list of current mode (1) IEEE 802.11g
vap0: IEEE 802.11 Hardware does not support configured channel

If I remove the [HT40+], then it works fine.

Thanks,
Ben


:-
-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com