Last but not least – a redundant internet connection (Part 4)

Author: Stephan  |  Category: Linux, Netzwerk, openwrt

myNetz
foreword
1.) You need at least 2 Linux Boxes for this. I used my OpenSuse Server with the VDSL Connection and the wrt160NL with Openwrt and UMTS/3G for this. 2 Openwrt Boxes are also suitable
2.) On Openwrt 10.03 I had Problems with Quagga-vtysh so I don’t used it
( On the Suse Box vtysh was working fine)
Main
First you have to install the Quagga Packets. For OpenWRT install

opkg install quagga quagga-libospf quagga-libzebra quagga-ospfd

For the second box please refer to the manual of your distribution.
If you don’t install vtysh , you can access to different consoles with
telnet 127.0.0.1 zebra (2601)
telnet 127.0.0.1 ospfd (2601)

For our case the interesting part is the ospf Configuration
router ospf
router ospf
ospf router-id 192.168.1.254
redistribute kernel
redistribute connected
network 192.168.1.0/24 area 0.0.0.0
neighbor 192.168.1.1
!
!

And the Configuration of the Suse Box

router ospf
ospf router-id 192.168.1.1
redistribute kernel
network 192.168.1.0/24 area 0.0.0.0
neighbor 192.168.1.254
!

Now let us check the routing table on both Boxes
suse# sh ip ro
Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF,
I - ISIS, B - BGP, > - selected route, * - FIB route

O 0.0.0.0/0 [110/200] via 192.168.1.254, eth1, 00:04:37
K>* 0.0.0.0/0 is directly connected, dsl0

openwrt# sh ip ro
Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF,
I - ISIS, B - BGP, H - HSLS, L - OLSR, M - BATMAN, > - selected route, * - FIB route

O 0.0.0.0/0 [110/200] via 192.168.1.1, br-lan, 00:00:48
K>* 0.0.0.0/0 is directly connected, ppp0

Both Router had their own defaultroutes and the Defaultroute of each other via ospf.
Has one router lost its connection , it has still the one of his neighbor

Source
http://www.taunusstein.net/index.php?option=com_content&view=article&id=62:routing&catid=15:linux

Installing 3G/UMTS ( Huawei e220 ) onto WRT 160nl and Openwrt(Part 3)

Author: Stephan  |  Category: Linux, Netzwerk, openwrt

First we need to install a bunch of packets

opkg install kmod-ar9170 kmod-usb-core kmod-usb-serial comgt kmod-usb-uhci kmod-usb2 kmod-ppp huaweiaktbbo

The E220 has two modes . To switch from USB Stick to UMTS you need huaweiaktbbo

root@OpenWrt:~# huaweiAktBbo
Searching modem...found supported modem!
Modem poked!

Its a clever idea to put it into init.d for startup. I used this script by Simon Josefsson


root@OpenWrt:/etc/init.d# cat huaweiAktBbo
#!/bin/sh /etc/rc.common
# Written by Simon Josefsson 2009-03-05. Released into the public domain.

START=70
start() {
huaweiAktBbo
}

Make the script accessible and enable it
And you need the following

root@OpenWrt:/# cat /etc/modules.d/60-usb-serial
usbserial vendor=0x12d1 product=0x1003

Then Reboot the Router

Next step ist to get ppp working. My working scripts ( I had a few tries before I found a working config)

root@OpenWrt:/# cat /etc/chatscripts/3g.chat
ABORT BUSY
ABORT 'NO CARRIER'
ABORT ERROR
REPORT CONNECT
TIMEOUT 10
"" "ATX"
OK "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
OK 'AT+CGDCONT=1,"IP","$USE_APN","0.0.0.0"'

SAY "Calling UMTS/GPRS"
TIMEOUT 30
#OK "ATD*99***1#"
OK "ATD*99#"
CONNECT ' '


root@OpenWrt:/# cat /etc/ppp/options
115200
logfile /dev/null
noaccomp
nopcomp
nocrtscts
lock
maxfail 0
lcp-echo-failure 0
lcp-echo-interval 0
ipcp-max-failure 30


root@OpenWrt:/# cat /etc/config/network
...
#### UMTS configuration
config interface ppp0
option ifname ppp0
option proto 3g
option device /dev/ttyUSB0
option 'service' 'umts'
option apn internet.eplus.de
option pincode 0000
option 'defaultroute' '1'
option 'peerdns' '1'

With an ifup ppp0 , the 3G modem should start connecting

My Sources
http://www.it-slav.net/blogs/2010/06/12/howto-use-3g-dongle-huawei-e1750-in-openwrt/
http://josefsson.org/openwrt/dongle.html

Another try with the wrt160nl and openwrt(Part 2) – Installing virtual WLANs

Author: Stephan  |  Category: Linux, Netzwerk, openwrt

The next goal was the Konfiguration of two “virtual” WLANs on one physical router ; one private and protected WLAN and one open for Guests ( otherwise protected )

The Code is very simple :

config wifi-iface
option device radio0
option network lan
option mode ap
option ssid Secret-WLAN
option encryption psk
option key Secret
option hidden 1

config wifi-iface
option device radio0
option network lan2
option mode ap
option ssid OpenWLAN
option encryption none
option hidden 1

At last , you need a virutal ethernetdevice as bridiging point for the Second WLAN

config interface lan2
option ifname eth0.2
option type bridge
option proto static
option ipaddr 172.27.1.1
option netmask 255.255.255.0

Another try with the wrt160nl and openwrt (Part 1) – Installing Openwrt

Author: Stephan  |  Category: Linux, Netzwerk, openwrt


After being unused for over an year I gave the WRT 160 NL another try .
Now there are images ready to use[1]
You can easily flash the image over an older installation ( in my case ) this way
sysupgrade -n openwrt-ar71xx-wrt160nl-squashfs.bin
or you can do it with the webgui.

To get WLAN wokring , you have to install additional packets
opkg update; opkg install kmod-ath9k hostapd wpa-supplicant
and then you have to do the following

rm /etc/config/wireless
wifi detect > /etc/config/wireless

and WLAN is working

[1]
http://downloads.openwrt.org/backfire/10.03/ar71xx/

Ein neuer WLAN Router – der WRT160NL

Author: Stephan  |  Category: Linux, Netzwerk, openwrt

Aus verschiedenen Gründen ( Speicher , Gigabit Ports ,.. ) und weil ich einfach auch ein Bastelwlan haben wollte ( das sollte dann der alte Router werden ) musste ein neuer Router her.
Eigentlich wollte ich ja einen , der zwei WLAns simultan kann egal ob physikalisch oder als virtueller Access Point.
Ausserdem sollte am besten Openwrt drauf laufen .
Diesen Alleskönner schien es nicht zu geben weswegen ich einen wrt160N bestellte.
Bekommen hatte ich allerdings einen wrt160NL.

Der Unterschied zwischen den Geräten erschloss sich mir erst beim Stöbern in der englischen wikipedia .
Der wrt160NL hat einen Atheroschip, dies kann VAP ermöglichen !!

Momentan bin ich nach diesem howto dabei, die Firmware zu bauen

Meine bisherigen Schritte

mkdir OpenWrt
cd OpenWrt/
svn co svn://svn.openwrt.org/openwrt/trunk/
cd trunk
svn up

sollte eine Versionsnummer von r17264 oder größer sein

./scripts/feeds update
make defconfig
make package/symlinks
make menuconfig

Im Menü habe ich als Target System ar71xx und als Target Profil wrt160nl eingestellt.
Momentan läuft das

make

noch