Lab 40. IS-IS Multilevel

Dalam lab kali ini, kita akan belajar menghubungkan 2 level IS-IS yang berbeda agar bisa saling berkomunikasi. Disini, kita akan menggunakan 2 area yang berbeda. Oke gan langsung saja kita ke TKP

1. Topologi Lab

2. Metode Lab

• Gunakan pengalamat ip standard IDN
• Set IDN-R1 sebagai IS-IS level-1, IDN-R2 level-1-2, IDN-R3 level-2
• Set area IDN-R1 dan R2 menjadi 49.0001 sedangkan R3 49.0002
• Set IS-IS database dan neighbor-nya, pastikan level IS-IS sesuai dengan topologi pada gambar
• Set IS-IS circuit-type pada interface router router yang saling terhubung, sesuaikan dengan level ISIS masing-masing router. 

3. Verifikasi

• Pastikan semua ip loopback bisa diakses oleh router manapun
•  Cek routing tabel di semua router, pastikan semua ip muncul
• Cek Is-IS database dan neighbornya, pastikan level IS-IS sesuai dengan topologi pada gambar

4. Konfigurasi

IDN-R1(config-if)#int f0/0
IDN-R1(config-if)#ip router isis
IDN-R1(config-if)#isis circuit-type level-1
IDN-R1(config-if)#int l0
IDN-R1(config-if)#ip router isis
IDN-R1(config-if)#isis circuit-type level-1
IDN-R1(config-if)#router isis
IDN-R1(config-router)#net 49.0001.0010.0100.1001.00
IDN-R1(config-router)#is-type level-1

IDN-R2(config)#int f0/0
IDN-R2(config-if)#ip router isis
IDN-R2(config-if)#isis circuit-type level-1
IDN-R2(config-if)#ip router isis
IDN-R2(config-if)#int lo0
IDN-R2(config-if)#ip router isis
IDN-R2(config-if)#isis circuit-type level-1
IDN-R2(config-if)#int f0/1
IDN-R2(config-if)#ip router isis
IDN-R2(config-if)#isis circuit-type level-2
IDN-R2(config-if)#router isis
IDN-R2(config-router)#net 49.0001.0020.0200.2002.00
(jika tidak di set is-type , by default akan menjadi 1-2)

IDN-R3(config)#int f0/0
IDN-R3(config-if)#ip router isis
IDN-R3(config-if)#isis circuit-type level-2-only
IDN-R3(config-if)#int l0
IDN-R3(config-if)#ip router isis
IDN-R3(config-if)#isis circuit-type level-2-only
IDN-R3(config-if)#router isis
IDN-R3(config-router)#net 49.0002.0030.0300.3003.00
IDN-R3(config-router)#is-type level-2-only

Verifikasi

IDN-R1#sh isis nei
System Id      Type Interface   IP Address      State Holdtime Circuit Id
IDN-R2         L1   Fa0/0       12.12.12.2      UP    8        IDN-R2.01

IDN-R2#sh isis nei
System Id      Type Interface   IP Address      State Holdtime Circuit Id
IDN-R1         L1   Fa0/0       12.12.12.1      UP    26       IDN-R2.01
IDN-R3         L2   Fa0/1       23.23.23.3      UP    7        IDN-R3.01

IDN-R3#sh isis nei
System Id      Type Interface   IP Address      State Holdtime Circuit Id
IDN-R2         L2   Fa0/0       23.23.23.2      UP    29       IDN-R3.01

Cek IS-IS database

IDN-R1#sh isis database
IS-IS Level-1 Link State Database:
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime      ATT/P/OL
IDN-R1.00-00        * 0x00000003   0x9F39        679               0/0/0
IDN-R2.00-00          0x00000005   0x6041        777               1/0/0
IDN-R2.01-00          0x00000001   0xA704        679               0/0/0

IDN-R2#sh isis database
IS-IS Level-1 Link State Database:
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime      ATT/P/OL
IDN-R1.00-00          0x00000003   0x9F39        669               0/0/0
IDN-R2.00-00        * 0x00000005   0x6041        772               1/0/0
IDN-R2.01-00        * 0x00000001   0xA704        673               0/0/0
IS-IS Level-2 Link State Database:
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime      ATT/P/OL
IDN-R2.00-00        * 0x00000005   0x2025        766               0/0/0
IDN-R3.00-00          0x00000004   0x53E7        764               0/0/0
IDN-R3.01-00          0x00000002   0x5D6F        764               0/0/0

IDN-R3#sh isis database
IS-IS Level-2 Link State Database:
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime      ATT/P/OL
IDN-R2.00-00          0x00000005   0x2025        763               0/0/0
IDN-R3.00-00        * 0x00000004   0x53E7        765               0/0/0
IDN-R3.01-00        * 0x00000002   0x5D6F        765               0/0/0

Cek routing tabel

IDN-R1#sh ip route isis
     2.0.0.0/32 is subnetted, 1 subnets
i L1    2.2.2.2 [115/20] via 12.12.12.2, FastEthernet0/0
i*L1 0.0.0.0/0 [115/10] via 12.12.12.2, FastEthernet0/0
(Level-1 hanya mengadvertise ke sesama level-1, jadi untuk bisa berkomunikasi dengan level-2 maka akan dibuat default route ke router L1/L2)

IDN-R2#sh ip route isis
     1.0.0.0/32 is subnetted, 1 subnets
i L1    1.1.1.1 [115/20] via 12.12.12.1, FastEthernet0/0
     3.0.0.0/32 is subnetted, 1 subnets
i L2    3.3.3.3 [115/20] via 23.23.23.3, FastEthernet0/1

IDN-R3#sh ip route isis
     1.0.0.0/32 is subnetted, 1 subnets
i L2    1.1.1.1 [115/30] via 23.23.23.2, FastEthernet0/0
     2.0.0.0/32 is subnetted, 1 subnets
i L2    2.2.2.2 [115/20] via 23.23.23.2, FastEthernet0/0
     12.0.0.0/24 is subnetted, 1 subnets
i L2    12.12.12.0 [115/20] via 23.23.23.2, FastEthernet0/0

Cek ping ke semua ip loopback

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 = 20/45/72 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 = 36/64/120 ms

Oke,konfigurasi Is-Is multilevel beres.