OLSR - di Ubuntu

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Sumber: http://wmunguiam.blogspot.com/2009/01/olsr-over-ubuntu-804.html

Pada dasarnya ada dua (2) cara utk mengaktifkan OLSR di Ubuntu, yaitu

Contents

[edit] Instalasi OLSRD dari repository

OLSR dapat di instalasi langsung dari repository menggunakan perintah

sudo apt-get install olsrd olsrd-plugins

hanya saja ini biasanya bukan versi bleeding edge :) tapi lumayan stabil lah untuk ngoprek.

Masalah dengan olsrd hasil apt-get adalah

  • olsrd dengan /etc/init.d/olsrd mencari /etc/olsrd.conf bukan /etc/olsrd/olsrd.conf. Akibatnya akan abort karena tidak menemukan file konfigurasi.
  • olsrd akan melaporan error, buang LinkQualityDijkstraLimit dan LinkQualityWinSize di olsrd.conf. Caranya edit
vi /etc/olsrd.conf

Remark line 124

# LinkQualityDijkstraLimit 3 3.0

Remark line 240

# LinkQualityWinSize    100

[edit] Compile dari Source Code

Siapkan aplikasi pendukung

sudo apt-get install kernel-package libncurses5-dev fakeroot wget \
bzip2 g++ libssl-dev libxml2-dev doxygen bison flex libc6

Download source code dari

http://www.olsr.org/mediawiki/index.php/Releases

Copy, Extract dan Compile

wget http://www.olsr.org/releases/0.9/olsrd-0.9.0.2.tar.bz2
cp olsrd-0.9.0.2.tar.bz2 /usr/local/src/
cd /usr/local/src
tar jxvf olsrd-0.9.0.2.tar.bz2 
cd /usr/local/src/olsrd-0.9.0.2
make all
make install
make libs
make install_libs
mkdir -p /etc
cp -i files/olsrd.conf.default.lq /etc/olsrd.conf

Sedikit catatan tentang olsrd

========= C O N F I G U R A T I O N - F I L E ============
olsrd uses the configfile /etc/olsrd.conf
a default configfile. A sample RFC-compliance aimed
configfile can be found in olsrd.conf.default.rfc.
However none of the larger OLSRD using networks use that
so install a configfile with activated link quality exstensions
per default.
can be found at files/olsrd.conf.default.lq
==========================================================
mkdir -p /etc
cp -i files/olsrd.conf.default.lq /etc/olsrd.conf
-------------------------------------------
Edit /etc/olsrd.conf before running olsrd!!
-

[edit] Edit OLSRD.CONF

Edit olsrd.conf

sudo cp /etc/olsrd.conf /etc/olsrd.conf.original
sudo vi /etc/olsrd.conf

Pastikan ada interface yang aktif menggunakan OLSR, misalnya eth1, wlan0 dll. Contoh konfigurasi sederhana

InterfaceDefaults {
    Ip4Broadcast      255.255.255.255
}
Interface "eth1" {
   # Ip4Broadcast 255.255.255.255
   # Ip6AddrType site-local
   # Ip6MulticastSite ff05::11
   # Ip6MulticastGlobal ff0e::1

   HelloInterval 6.0
   HelloValidityTime 600.0
   TcInterval 0.5
   TcValidityTime 300.0
   MidInterval 10.0
   MidValidityTime 300.0
   HnaInterval 10.0
   HnaValidityTime 300.0
   # Weight 0
   # LinkQualityMult 192.168.0.1 0.5
   }


Tambahkan untuk Plugin txtinfo

LoadPlugin "olsrd_txtinfo.so.0.1"
   {
   PlParam "port" "8080"
   PlParam "Host" "127.0.0.1"
   # PlParam "Net" "0.0.0.0 0.0.0.0"
   # PlParam "Host" "80.23.53.22"
   # # PlParam "Net" "192.168.0.0 255.255.0.0"  
   }


Kadang kala pada saat kita jalankan olsrd akan melaporan error, buang LinkQualityDijkstraLimit dan LinkQualityWinSize di olsrd.conf. Caranya edit

vi /etc/olsrd.conf

Remark line 124

# LinkQualityDijkstraLimit 3 3.0

Remark line 240

# LinkQualityWinSize    100

[edit] Cek konfigurasi

Sebaiknya cek konfigurasi menggunakan perintah

sudo olsrd -d 2

atau bagi yang menginstall menggunakan apt-get bisa

sudo olsrd -d 2 -f /etc/olsrd/olsrd.conf

Kayanya menggunakan apt-get ada beberapa error, di beri # aja di line yang error. Biasanya setelah di # error yang ada maka olsrd akan jalan.

[edit] IPv6

Menjalankan OLSR Untuk IPv6

sudo olsrd -d 2 -ipv6

[edit] Edit Interface

Kita dapat melakukannya menggunakan

  • iwconfig di console
  • edit /etc/network/interface

Dengan asumsi eth1 adalah interface wireless. Edit di console

iwconfig wlan0 mode ad-hoc
iwconfig wlan0 essid MESH
iwconfig wlan0 ap 02:ca:ff:ee:ba:be
iwconfig wlan0 channel 1
ifconfig wlan0 10.1.1.1
ifconfig wlan0 netmask 255.0.0.0 

atau

iwconfig wlan0 mode ad-hoc essid MESH ap 02:ca:ff:ee:ba:be channel 1
ifconfig wlan0 10.1.1.1 netmask 255.0.0.0


Edit

vi /etc/network/interfaces

Isi kira-kira sebagi berikut

   auto lo
   iface lo inet loopback

   auto wlan0
   allow-hot plug wlan0
   iface wlan0 inet static
   address 10.1.1.1
   broadcast 10.255.255.255
   netmask 255.0.0.0
   wireless-mode ad-hoc
   wireless-channel 1
   wireless-essid MESH
   wireless-bssid 02:ca:ff:ee:ba:be

   auto wlan0
   allow-hot plug wlan0
   iface wlan0 inet static
   address 10.10.10.11
   netmask 255.255.255.0
   wireless-mode ad-hoc
   wireless-channel 11
   wireless-key s:12345
   wireless-essid mesh

   #auto eth0
   #iface eth0 inet dhcp
   
   # Konfigurasi IPv6
   iface wlan0 inet6 static
   address 2001:123:127::127
   netmask 128
   wireless-mode ad-hoc
   wireless-channel 1
   wireless-essid MESH
   wireless-bssid 02:ca:ff:ee:ba:be

[edit] Restart Networking

networking and OLSR

sudo /etc/init.d/networking restart
sudo /etc/init.d/olsrd start


Jika pada saat melakukan

sudo /etc/init.d/network restart

Keluar error berikut

Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; Invalid argument.
Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; Device or resource busy.

Kemungkinan wireless interface / hardware yang anda gunakan tidak mendukung mode ad-hoc. Kita perlu menggunakan USB wireless card lain.

[edit] Verifikasi Jaringan

Asumsinya eth1 adalah interface WLAN.

ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 00:21:00:50:a3:90  
          inet addr:172.16.1.2  Bcast:172.16.255.255  Mask:255.255.0.0
          inet6 addr: fe80::221:ff:fe50:a390/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:52 errors:0 dropped:0 overruns:0 frame:188
          TX packets:88 errors:11 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3356 (3.3 KB)  TX bytes:14387 (14.3 KB)
          Interrupt:17 

Cek wireless

iwconfig eth1
eth1      IEEE 802.11bg  ESSID:"MESH"  
          Mode:Ad-Hoc  Frequency:2.412 GHz  Cell: 02:CA:FF:EE:BA:BE   
          Bit Rate=54 Mb/s   Tx-Power:24 dBm   
          Retry min limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=5/5  Signal level=-21 dBm  Noise level=-57 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0 

Cek Routing

netstat -nr
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
0.0.0.0         172.16.1.1      0.0.0.0         UG        0 0          0 eth1
172.16.0.0      0.0.0.0         255.255.0.0     U         0 0          0 eth1
172.16.1.1      172.16.1.1      255.255.255.255 UGH       0 0          0 eth1
172.16.1.2      172.16.1.2      255.255.255.255 UGH       0 0          0 eth1

Perhatikan host dengan netmask 255.255.255.255, ini merupakan host yang di tambahkan secara automatis oleh OLSR.

[edit] Referensi

[edit] Pranala Menarik

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