wifi dongle sagem : pb debit
Bonjour,
Voila mon pb : je viens d'acquerir un AP Netgear WG602v3 qui va me servir a
connecter mon portable equipe d'un dongle sagem.
J'ai installe ndiswrapper recupere sur sourceforge, installé le pilote
windows qui va bien et hop connexion : OK.... enfin presque car
voici ce que me donne un ping sur wanadoo :
root@portable:~# ping www.wanadoo.fr
PING www.wanadoo.fr (193.252.122.103): 56 data bytes
64 bytes from 193.252.122.103: icmp_seq=0 ttl=245 time=47.8 ms
64 bytes from 193.252.122.103: icmp_seq=1 ttl=245 time=104.2 ms
64 bytes from 193.252.122.103: icmp_seq=2 ttl=245 time=5533.0 ms
64 bytes from 193.252.122.103: icmp_seq=3 ttl=245 time=4533.6 ms
64 bytes from 193.252.122.103: icmp_seq=4 ttl=245 time=3533.5 ms
64 bytes from 193.252.122.103: icmp_seq=5 ttl=245 time=2533.3 ms
64 bytes from 193.252.122.103: icmp_seq=6 ttl=245 time=1533.4 ms
64 bytes from 193.252.122.103: icmp_seq=7 ttl=245 time=534.4 ms
64 bytes from 193.252.122.103: icmp_seq=8 ttl=245 time=42.5 ms
64 bytes from 193.252.122.103: icmp_seq=9 ttl=245 time=91.2 ms
64 bytes from 193.252.122.103: icmp_seq=10 ttl=245 time=68.8 ms
64 bytes from 193.252.122.103: icmp_seq=11 ttl=245 time=94.9 ms
64 bytes from 193.252.122.103: icmp_seq=12 ttl=245 time=5514.9 ms
64 bytes from 193.252.122.103: icmp_seq=13 ttl=245 time=4514.7 ms
64 bytes from 193.252.122.103: icmp_seq=14 ttl=245 time=3515.0 ms
64 bytes from 193.252.122.103: icmp_seq=15 ttl=245 time=2515.1 ms
64 bytes from 193.252.122.103: icmp_seq=16 ttl=245 time=1515.1 ms
64 bytes from 193.252.122.103: icmp_seq=17 ttl=245 time=514.5 ms
64 bytes from 193.252.122.103: icmp_seq=18 ttl=245 time=42.3 ms
64 bytes from 193.252.122.103: icmp_seq=19 ttl=245 time=110.1 ms
64 bytes from 193.252.122.103: icmp_seq=20 ttl=245 time=42.9 ms
--- www.wanadoo.fr ping statistics ---
22 packets transmitted, 21 packets received, 4% packet loss
round-trip min/avg/max = 42.3/1758.8/5533.0 ms
Les temps de reponse sont les memes sur une machine du reseau local.
On constate que le debit est du genre aleatoire. Ca ne gene pas trop pour la
navigation mais des que l'on veut se connecter en ssh
ca devient lourd.
Ma config : portable omnibook 6000. Debian-sarge 2.6.15-1-686 sans udev.
L'AP est connecte a un routeur SMC, lui-meme connecte a un modem thomson
SpeedTouch 510. L'acces internet depuis n'importe quelle
machine connectee en filaire est OK.
J'ai cherche un peu partout mais n'ai rien trouve correspondant a ce genre
de config/probleme.
Je lance la connexion par un petit script :
root@portable:~# cat startwifi
#!/bin/sh
ifconfig eth0 down
modprobe ndiswrapper
iwconfig eth2 channel 11
iwconfig eth2 mode managed
iwconfig eth2 essid xxxxxxxxxx
iwconfig eth2 key xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
ifconfig eth2 192.168.0.75
route add default gw 192.168.0.254
Quelques logs : (chargement du module ndiswrapper puis insertion du dongle)
/var/log/messages:
Feb 11 10:46:47 portable kernel: ndiswrapper version 1.8 loaded
(preempt=no,smp=no)
Feb 11 10:46:48 portable kernel: usbcore: registered new driver ndiswrapper
Feb 11 10:46:59 portable kernel: usb 3-1: new high speed USB device using
ehci_hcd and address 3
Feb 11 10:46:59 portable kernel: ndiswrapper: driver wlanuzg (Sagem,
SA,05/10/2005,2.23.11299.2004) loaded
Feb 11 10:47:01 portable kernel: eth2: vendor: 'SAGEM Wi-Fi 11g USB adapter'
Feb 11 10:47:01 portable kernel: eth2: ndiswrapper ethernet device
xx:xx:xx:xx:xx:xx using driver wlanuzg, 079B:004A.F.conf
Feb 11 10:47:01 portable kernel: eth2: encryption modes supported: WEP; TKIP
with WPA, WPA2, WPA2PSK; AES/CCMP with WPA, WPA2, WPA2P
SK
A priori ca "chante" juste.
L'interface reseau est bien montee :
root@portable:/var/log# ifconfig
eth2 Lien encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx
inet adr:192.168.0.75 Bcast:192.168.0.255 Masque:255.255.255.0
adr inet6: fe80::260:b3ff:fee1:963e/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6059 errors:0 dropped:0 overruns:0 frame:0
TX packets:4321 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
RX bytes:5750502 (5.4 MiB) TX bytes:885306 (864.5 KiB)
lo Lien encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Hôte
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8164 errors:0 dropped:0 overruns:0 frame:0
TX packets:8164 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
RX bytes:646920 (631.7 KiB) TX bytes:646920 (631.7 KiB)
Par contre il y a quelque chose qui me chagrine :
root@portable:/var/log# iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
sit0 no wireless extensions.
Warning: Driver for device eth2 has been compiled with version 19
of Wireless Extension, while this program supports up to version 17.
Some things may be broken...
eth2 Auto ESSID:"xxxxxxxxxx"
Mode:Managed Frequency:2.462 GHz Access Point: 00:14:6C:3A:A7:BF
Bit Rate:54 Mb/s Tx-Power:-2147483648 dBm Sensitivity=0/3
RTS thr:2347 B Fragment thr:2346 B
Encryption key:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Security
mode:restricted
Power Management:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Deja le Warning : j'ai essaye de compiler les versions 1.7,1.8,1.9 de
ndiswrapper : pas mieux.
D'autre part la ligne
Link Quality:0 Signal level:0 Noise level:0
m'inquiete un peu non ?
Si quelqu'un a une idee...
Merci d'avance.
Patrick
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