Lab 36. Single Level IS-IS

ISIS adalah dynamic routing protokol yang termasuk kategori IGP. Mendukung hirarki 2 level yaitu level-1 (daerah) dan level-2 (backbone). Langsung saja gan, kita belajar ngelab di TKP ...

1. Topologi Lab

2. Metode Lab

• Gunakan pengalamatan ip standard IDN
• Konfigurasikan IS-Is di semua router
• Level yang digunakan adalah level-2 (backbone)
• Net address yang digunakan adalah 49.0001.00x0.0x00.x00x.00 dimana x adalah ip loopback

3. Verifikasi

• Pastikan semua IP bisa diakses oleh semua router
• Cek routing tabel, neighbor, database dan topologi

4. Konfigurasi

IDN-R1(config)#int f0/0
IDN-R1(config-if)#ip add 12.12.12.1 255.255.255.0
IDN-R1(config-if)#ip router isis
IDN-R1(config-if)#no sh
IDN-R1(config-if)#int l0
IDN-R1(config-if)#ip add 1.1.1.1 255.255.255.255
IDN-R1(config-if)#ip router isis
IDN-R1(config-if)#router isis
IDN-R1(config-router)#net 49.0001.0010.0100.1001.00
IDN-R1(config-router)#is-type level-2-only

IDN-R2(config)#int f0/0
IDN-R2(config-if)#no sh
IDN-R2(config-if)#ip add 12.12.12.2 255.255.255.0
IDN-R2(config-if)#ip router isis
IDN-R2(config-if)#int f0/1
IDN-R2(config-if)#no sh
IDN-R2(config-if)#ip add 23.23.23.2 255.255.255.0
IDN-R2(config-if)#ip router isis
IDN-R2(config-if)#int l0
IDN-R2(config-if)#ip add 2.2.2.2 255.255.255.255
IDN-R2(config-if)#ip router isis
IDN-R2(config-if)#router isis
IDN-R2(config-router)#net 49.0001.0020.0200.2002.00
IDN-R2(config-router)#is-type level-2-only

IDN-R3(config)#int f0/0
IDN-R3(config-if)#no sh
IDN-R3(config-if)#ip add 23.23.23.3 255.255.255.0
IDN-R3(config-if)#ip router isis
IDN-R3(config-if)#int l0
IDN-R3(config-if)#ip add 3.3.3.3 255.255.255.255
IDN-R3(config-if)#ip router isis
IDN-R3(config-if)#router isis
IDN-R3(config-router)#net 49.0001.0030.0300.3003.00
IDN-R3(config-router)#is-type level-2-only

Untuk verifikasi, lakukan ping dari IDN-R1

IDN-R1#ping 2.2.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/40/76 ms

IDN-R1#ping 3.3.3.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/61/104 ms

IDN-R1#sh ip route | i L2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
i L2    2.2.2.2 [115/20] via 12.12.12.2, FastEthernet0/0
i L2    3.3.3.3 [115/30] via 12.12.12.2, FastEthernet0/0
i L2    23.23.23.0 [115/20] via 12.12.12.2, FastEthernet0/0

IDN-R1#sh isis neighbor
System Id      Type Interface   IP Address      State Holdtime Circuit Id
IDN-R2         L2   Fa0/0       12.12.12.2      UP    7        IDN-R2.01

IDN-R1#sh isis database
IS-IS Level-2 Link State Database:
LSPID                       LSP Seq Num        LSP Checksum  LSP Holdtime      ATT/P/OL
IDN-R1.00-00        * 0x00000004      0x4C89                                892               0/0/0
IDN-R2.00-00          0x00000007       0x0CC0                               949               0/0/0
IDN-R2.01-00          0x00000002       0x35FD                                890               0/0/0
IDN-R3.00-00          0x00000004       0xEE4D                                947               0/0/0
IDN-R3.01-00          0x00000002       0x5D6F                                 947               0/0/0

Tanda * menunjukkan bahwa ia berasal dari lokal.

IDN-R1#sh isis topology
IS-IS paths to level-2 routers
System Id            Metric     Next-Hop             Interface   SNPA
IDN-R1               --
IDN-R2               10         IDN-R2               Fa0/0       c001.0a2c.0000
IDN-R3               20         IDN-R2               Fa0/0       c001.0a2c.0000

Oke, kita sudah selesai ngonfig IS-IS.