Penjelasan Soal Shift Jarkom Modul 4

Membuat topologi menggunakan metode CIDR dalam menentukan IP masing-masing host

Topologi 8

Menggunakan metode CIDR untuk menentukan distribusi IP nya.

ABCD             : 192.167.01 | 000000.00000000 / 18 (192.167.64.0 / 18)

   A                  : 192.167.01001 | 000.00000000 / 21 (192.167.72.0 / 21)

   B                  : 192.167.01010 | 000.00000000 / 21 (192.167.80.0 / 21)

   C-D              : 192.167.01011 | 000.00000000 / 21  (192.167.88.0 / 21)

       C              : 192.167.0101101 | 0.00000000 / 23  (192.167.90.0 / 23)

       D              : 192.167.0101110 | 0.00000000 / 23  (192.167.92.0 / 23)

EFG                : 192.167.10 | 000000.00000000 / 18 (192.167.128.0 / 18)

   E                   : 192.167.1001 | 0000.00000000 / 20 (192.167.144.0 / 20)

   F-G               : 192.167.1010 | 0000.00000000 / 20 (192.167.160.0 / 20)

       F               : 192.167.101001 | 00.00000000 / 22 (192.167.164.0 / 22)

       G              : 192.167.101010 | 00.00000000 / 22 (192.167.168.0 / 22)

HIJ                  : 192.168.01 | 000000.00000000 / 18 (192.168.64.0 / 18)

   H                  : 192.168.01001 | 000.00000000 / 21 (192.168.72.0 / 21)

   I                    : 192.168.01010 | 000.00000000 / 21 (192.168.80.0 / 21)

   J                    : 192.168.01011 | 000.00000000 / 21 (192.168.88.0 / 21)

Namun, yang perlu diperhatikan adalah kita akan menggunakan DMZ untuk server tp dan gm menggunakan IP yang disediakan oleh AJK yaitu 10.151.71.56 /29.

Dari situ kita dapat kita temukan pembagiannya yaitu:

gm alokasi IPnya untuk DMZ  : 10.151.71.56 - 10.151.71.59 /29

tp alokasi IPnya untuk DMZ  : 10.151.71.60 - 10.151.71.63 /29

DMZ ini digunakan agar kita bisa mengakses keluar jaringan sehingga kita bisa mengakses alamat-alamat yang dikenal oleh AJK yang lebih luas dari topologi yang kita buat.

Sehingga gambarnya apabila sudah dibagi menggunakan DMZ, menjadi :

Lalu sekarang kita harus membuat script sh nya

#switch

uml_switch -unix s1 > /dev/null < /dev/null &

uml_switch -unix s2 > /dev/null < /dev/null &

uml_switch -unix s3 > /dev/null < /dev/null &

uml_switch -unix s4 > /dev/null < /dev/null &

uml_switch -unix s5 > /dev/null < /dev/null &

uml_switch -unix s6 > /dev/null < /dev/null &

uml_switch -unix s7 > /dev/null < /dev/null &

uml_switch -unix s8 > /dev/null < /dev/null &

uml_switch -unix s9 > /dev/null < /dev/null &

uml_switch -unix s10 > /dev/null < /dev/null &

#router

xterm -T tugu_pahlawan -e linux ubd0=tugu_pahlawan,uml umid=tugu_pahlawan eth0=tuntap,,,10.151.70.29 eth1=daemon,,,s2 eth2=daemon,,,s6 eth3=daemon,,,s3 &

xterm -T stasiun_gubeng -e linux ubd0=stasiun_gubeng,uml umid=stasiun_gubeng eth0=daemon,,,s1 eth1=daemon,,,s5 eth2=daemon,,,s2 &

xterm -T ampel -e linux ubd0=ampel,uml umid=ampel eth0=daemon,,,s3 eth1=daemon,,,s7 eth2=daemon,,,s4 &

xterm -T siola -e linux ubd0=siola,uml umid=siola eth0=daemon,,,s5 eth1=daemon,,,s8&

xterm -T monkasel -e linux ubd0=monkasel,uml umid=monkasel eth0=daemon,,,s6 eth1=daemon,,,s9 &

xterm -T balai_kota -e linux ubd0=balai_kota,uml umid=balai_kota eth0=daemon,,,s9 eth1=daemon,,,s10 &

#host

xterm -T plasa_surabaya -e linux ubd0=plasa_surabaya,uml umid=plasa_surabaya eth0=daemon,,,s1 mem=50M&

xterm -T tp -e linux ubd0=tp,uml umid=tp eth0=daemon,,,s4 mem=50M&

xterm -T sutos -e linux ubd0=sutos,uml umid=sutos eth0=daemon,,,s6 &

xterm -T gm -e linux ubd0=gm,uml umid=gm eth0=daemon,,,s7 &

xterm -T kebun_bibit -e linux ubd0=kebun_bibit,uml umid=kebun_bibit eth0=daemon,,,s8 &

xterm -T taman_bungkul -e linux ubd0=taman_bungkul,uml umid=taman_bungkul eth0=daemon,,,s10 &

Lalu, setiap host harus kita konfigurasi interfacenya. Cara buka interfacenya:

nano /etc/network/interfaces

Berikut detail konfigurasinya:

tugu_pahlawan (Router Utama)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 10.151.70.30

netmask 255.255.255.0

gateway 10.151.70.29

auto eth1

iface eth1 inet static

address 192.167.80.1

netmask 255.255.248.0

up ip route add 192.167.64.0/18 via 192.167.80.2

auto eth2

iface eth2 inet static

address 192.167.144.1

netmask 255.255.240.0

up ip route add 192.167.128.0/18 via 192.167.144.2

auto eth3

iface eth3 inet static

address 192.168.72.1

netmask 255.255.248.0

up ip route add 10.151.71.56/29 via 192.168.72.2

==============================================

stasiun_gubeng (router di subnet A, B, dan C)

auto lo

iface lo inet loopback

auto eth2

iface eth2 inet static

address 192.167.80.2

netmask 255.255.248.0

gateway 192.167.80.1

auto eth1

iface eth1 inet static

address 192.167.90.1

netmask 255.255.254.0

up ip route add 192.167.88.0/21 via 192.167.90.2

auto eth0

iface eth0 inet static

address 192.167.72.1

netmask 255.255.248.0

==============================================

host Plasa Surabaya (Host di subnet A)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 192.167.72.2

==============================================

siola (router di subnet C dan D)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 192.167.90.2

netmask 255.255.254.0

up ip route add 0.0.0.0/0 via 192.167.90.1

auto eth1

iface eth1 inet static

address 192.167.92.1

netmask 255.255.254.0

==============================================

Kebun Bibit (Host di subnet C)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 192.167.92.2

netmask 255.255.254.0

gateway 192.167.92.1

==============================================

host Sutos (Host di subnet E)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 192.167.144.3

netmask 255.255.240.0

gateway 192.167.144.1

==============================================

Monkasel (router di subnet E, F, dan G)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 192.167.144.2

netmask 255.255.240.0

gateway 192.167.144.1

auto eth1

iface eth1 inet static

address 192.167.164.1

netmask 255.255.252.0

up ip route add 192.167.160.0/20 via 192.167.164.2

==============================================

Balai_kota (router di subnet F dan G)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 192.167.164.2

netmask 255.255.252.0

gateway 192.167.164.1

auto eth1

iface eth1 inet static

address 192.167.168.1

netmask 255.255.252.0

==============================================

Taman_bungkul (Host di subnet G)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 192.167.168.2

netmask 255.255.252.0

gateway 192.167.168.1

==============================================

Ampel (router di subnet H,I, dan J)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 192.168.72.2

netmask 255.255.248.0

gateway 192.168.72.1

auto eth1

iface eth1 inet static

address 10.151.71.57

netmask 255.255.255.252

auto eth2

iface eth2 inet static

address 10.151.71.61

netmask 255.255.255.252

==============================================

gm (server di subnet I)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 10.151.71.58

netmask 255.255.255.252

gateway 10.151.71.57

==============================================

tp (server di subnet J)

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet static

address 10.151.71.62

netmask 255.255.255.252

gateway 10.151.71.61

==============================================

kemudian terapkan konfigurasi di atas dengan syntax service networking restart di setiap host

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