Setting DHCP Server in Junos

Kita simulasikan kembali yang sederhana, sebelum ke yang lebih complex. Design network simulasi seperti di atas. Fokus hanya pada router Juniper, PC2 dan R-Client-2. ( Sengaja menambahkan router R-Client-2, supaya tidak mengotak atik konfigurasi IP address di router R-client :) )

Kita tentukan dahulu network mana yang akan diterapkan service dhcp ini. Misalnya network 192.168.200.0/24, yang artinya melewati interface ge-0/0/2.0. Ok. Tanpa perlu banyak cincong lagi, langsung ke konfigurasi.

root> edit

root# edit system services

root# set dhcp pool 192.168.200.0/24

root# edit dhcp pool 192.168.200.0/24

root# set address-range low 192.168.200.50 high 192.168.200.99

root# set router 192.168.200.1

root# set name-server 8.8.8.8

root# set name-server 8.8.4.4

root# set default-lease-time 3600

root# show

address-range low 192.168.200.50 high 192.168.200.99;

default-lease-time 3600;

name-server {

    8.8.8.8;

    8.8.4.4;

}

router {

    192.168.200.1;

}

root# commit check

configuration check succeeds

Firewall

Tambahkan rule firewall untuk meng-allow service dhcp.

root# top

root# edit security zones security-zone loc2

root# set interfaces ge-0/0/2.0 host-inbound-traffic system-services dhcp

root# show

interfaces {

    ge-0/0/2.0 {

        host-inbound-traffic {

            system-services {

                ping;

                ssh;

                telnet;

                dhcp;

            }

        }

    }

}

root# commit check

configuration check succeeds

root# commit

commit complete

Ok. Selanjutnya di Router baru, R-Cisco-2, konfigurasi dhcp client di interface fa0/0

R-CLIENT-2#config ter

R-CLIENT-2(config)#inter fa0

R-CLIENT-2(config-if)#ip address dhcp

R-CLIENT-2(config-if)#no shut

R-CLIENT-2(config-if)#

*Mar  1 00:03:52.667: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to up

*Mar  1 00:03:53.667: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed state to up

Cuma gitu doank... Dan mari kita lihat IP addressnya yang didapatkannya.

R-CLIENT-2(config-if)#^Z

R-CLIENT-2#c

*Mar  1 00:04:38.199: %SYS-5-CONFIG_I: Configured from console by console

R-CLIENT-2#sh inter f0

FastEthernet0 is up, line protocol is up

  Hardware is PQUICC_FEC, address is d003.1924.0000 (bia d003.1924.0000)

  Internet address is 192.168.200.53/24

  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

  Full-duplex, 100Mb/s, 100BaseTX/FX

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input 00:00:49, output 00:00:07, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     2 packets input, 684 bytes

     Received 2 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog

     0 input packets with dribble condition detected

     12 packets output, 2724 bytes, 0 underruns

     0 output errors, 0 collisions, 8 interface resets

R-CLIENT-2#sh ip route

-----deleted----

C    192.168.200.0/24 is directly connected, FastEthernet0

S*   0.0.0.0/0 [254/0] via 192.168.200.1

Sedangkan dari PC2, seperti pada gambar di bawah ini.

Mantapzz... Berhasil.