I want like to create a simple WiFi booster with Raspberry PI. So I have RPI2 with two dongles: Ralink (rt2800usb) and Edimax (rtl8812au).
pi@raspberrypi:~ $ lsusb
Bus 001 Device 005: ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter
Bus 001 Device 004: ID 7392:a812 Edimax Technology Co., Ltd
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
pi@raspberrypi:~ $ readlink /sys/class/net/wlan0/device/driver
../../../../../../../../bus/usb/drivers/rtl8812au
pi@raspberrypi:~ $ readlink /sys/class/net/wlan1/device/driver
../../../../../../../../bus/usb/drivers/rt2800usb
pi@raspberrypi:~ $ sudo cat /etc/network/interfaces.d/wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-ssid VMXXX
wpa-psk 33XXX
wireless-power off
pi@raspberrypi:~ $ sudo cat /etc/network/interfaces.d/wlan1
allow-hotplug wlan1
iface wlan1 inet static
metric 100
address 192.168.5.1
netmask 255.255.255.0
network 192.168.5.0
wireless-power off
pi@raspberrypi:~ $ sudo cat /etc/hostapd/hostapd.conf
country_code=GB
interface=wlan1
ssid=Raspberry
hw_mode=g
channel=8
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wmm_enabled=1
wpa=2
wpa_passphrase=12XXXXXXXX
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
pi@raspberrypi:~ $ iwconfig
eth0 no wireless extensions.
wlan1 IEEE 802.11 Mode:Master Tx-Power=20 dBm
Retry short long limit:2 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
wlan0 IEEE 802.11AC ESSID:"VM5141922-5G" Nickname:"<WIFI@REALTEK>"
Mode:Managed Frequency:5.22 GHz Access Point: 40:0D:10:97:FF:0F
Bit Rate:434 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality=87/100 Signal level=49/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
dnsmasq and dhcpcd are configured to share internet from wlan0 to wlan1.
It all seems to work well. From the notebook connected to this access point:
C:\Users\Alex> tracert google.com
Tracing route to google.com [216.58.210.238]
over a maximum of 30 hops:
1 3 ms 2 ms 7 ms 192.168.5.1 <- this is Raspberry PI
2 64 ms 7 ms 7 ms 192.168.0.1 <- this is home router
3 18 ms 13 ms 16 ms ...
Ping is nice:
Reply from 192.168.5.1: bytes=32 time=2ms TTL=64
Reply from 192.168.5.1: bytes=32 time=1ms TTL=64
Reply from 192.168.5.1: bytes=32 time=1ms TTL=64
Reply from 192.168.5.1: bytes=32 time=5ms TTL=64
Reply from 192.168.5.1: bytes=32 time=2ms TTL=64
Reply from 192.168.5.1: bytes=32 time=3ms TTL=64
However when I start browsing anything more complicated than a simple Web-page it quickly becomes unreliable: delays up to 3 seconds and packet drops.
Reply from 192.168.5.1: bytes=32 time=2ms TTL=64
Reply from 192.168.5.1: bytes=32 time=296ms TTL=64
Reply from 192.168.5.1: bytes=32 time=77ms TTL=64
Request timed out.
Reply from 192.168.5.1: bytes=32 time=442ms TTL=64
Reply from 192.168.5.1: bytes=32 time=3ms TTL=64
Reply from 192.168.5.1: bytes=32 time=377ms TTL=64
Reply from 192.168.5.1: bytes=32 time=526ms TTL=64
Reply from 192.168.5.1: bytes=32 time=28ms TTL=64
Reply from 192.168.5.1: bytes=32 time=4ms TTL=64
Reply from 192.168.5.1: bytes=32 time=678ms TTL=64
Reply from 192.168.5.1: bytes=32 time=384ms TTL=64
Reply from 192.168.5.1: bytes=32 time=19ms TTL=64
I've searched for solution on this forum and others and it seems that power could be an issue. Is there successful configuration with two dongles and any RPI version that works well under load?
