Re: virtual access poitns (ath5k/mac80211)

From: Ben Greear <greearb@candelatech.com>
To: Ryszard <ryszard99@gmail.com>
Cc: "Luis R. Rodriguez" <mcgrof@gmail.com>,
	Florian Fainelli <florian@openwrt.org>,
	Patrick McHardy <kaber@trash.net>,
	linux-wireless@vger.kernel.org
Subject: Re: virtual access poitns (ath5k/mac80211)
Date: Mon, 30 Aug 2010 17:05:00 -0700	[thread overview]
Message-ID: <4C7C472C.4040606@candelatech.com> (raw)
In-Reply-To: <AANLkTik-W_=AixLMwqkrJi9JgwjvrDNGnyHOrbyCgP5+@mail.gmail.com>

On 08/30/2010 04:52 PM, Ryszard wrote:
> hey ben,
>
> i've set everything up and have all the routing working etc etc. it
> seems as tho' there is one last issue i'm hoping you can point me in
> the right direction with.
>
> When the device i'm working on boots i've got hostapd starting up with
> two VAP's (vap0 and vap1).  when i connect to on AP everything goes
> well and i can send and receive traffic, however when i disconnect and
> reconnect to the other AP it seems as tho' the client connection
> hangs.
>
> Inspecting syslog shows all the dhcp information  for the 1st
> connection, however there is nothing in syslog for the 2nd connection.
>
> have you seen this, or have an idea why it may happen by chance?

Make sure both APs are configured on the same channel in hostapd?

An example of two of my hostapd config files are below, in case that helps:

[root@lanforge-D0-20 wifi]# more hostapd_vap0.conf
### Auto-generated by LANforge...do not attempt to modify.
interface=vap0
driver=nl80211
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
dump_file=wifi/hostapd_vap0.dump
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
ssid=
bssid=00:1f:f1:d0:0f:00
country_code=US
ieee80211d=0
hw_mode=a
channel=1
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
wme_enabled=0
wme_ac_bk_cwmin=4
wme_ac_bk_cwmax=10
wme_ac_bk_aifs=7
wme_ac_bk_txop_limit=0
wme_ac_bk_acm=0
wme_ac_be_aifs=3
wme_ac_be_cwmin=4
wme_ac_be_cwmax=10
wme_ac_be_txop_limit=0
wme_ac_be_acm=0
wme_ac_vi_aifs=2
wme_ac_vi_cwmin=3
wme_ac_vi_cwmax=4
wme_ac_vi_txop_limit=94
wme_ac_vi_acm=0
wme_ac_vo_aifs=2
wme_ac_vo_cwmin=2
wme_ac_vo_cwmax=3
wme_ac_vo_txop_limit=47
wme_ac_vo_acm=0
ieee8021x=0
eapol_key_index_workaround=0
eap_server=0
own_ip_addr=127.0.0.1
[root@lanforge-D0-20 wifi]# more hostapd_vap1.conf
### Auto-generated by LANforge...do not attempt to modify.
interface=vap1
driver=nl80211
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
dump_file=wifi/hostapd_vap1.dump
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
ssid=
bssid=00:1f:f1:d0:0f:01
country_code=US
ieee80211d=0
hw_mode=a
channel=1
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
wme_enabled=0
wme_ac_bk_cwmin=4
wme_ac_bk_cwmax=10
wme_ac_bk_aifs=7
wme_ac_bk_txop_limit=0
wme_ac_bk_acm=0
wme_ac_be_aifs=3
wme_ac_be_cwmin=4
wme_ac_be_cwmax=10
wme_ac_be_txop_limit=0
wme_ac_be_acm=0
wme_ac_vi_aifs=2
wme_ac_vi_cwmin=3
wme_ac_vi_cwmax=4
wme_ac_vi_txop_limit=94
wme_ac_vi_acm=0
wme_ac_vo_aifs=2
wme_ac_vo_cwmin=2
wme_ac_vo_cwmax=3
wme_ac_vo_txop_limit=47
wme_ac_vo_acm=0
ieee8021x=0
eapol_key_index_workaround=0
eap_server=0
own_ip_addr=127.0.0.1

If you still have no luck, please send output of:

ifconfig -a

route -n

tail -200 /var/log/messages

dmesg

on your VAP machine.

Thanks,
Ben

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