Lab 52. DMVPN Phase 1 with Dynamic Mapping

Sebelumnya kita sudah ngelab DMVPN Phase 1 with static mapping. Kebalikannya, kita akan ngelab yang dynamic. Ciri2 dari dynamic mapping adalah :
1. Di Hub tidak perlu dikonfigurasi ip nhrp map
2. Di Spoke menggunakan perintah ip nhrp nhs
3. Di Spoke tetap dikonfigurasi static mapping ke HUB
Untuk lebih jelasnya, kita langsung coba saja...

1.       Topologi LAB

2.       Metode LAB

• Masih melanjutkan LAB sebelumnya, hapus dulu interface tunnel1 di semua router
• Konfigurasikan dynamic mapping, gunakan perintah ip nhrp nhs pada SPOKE untuk request ke HUB

3.       Verifikasi :

Ø  Pastikan type DMVPNnya dynamic, gunakan perintah show ip nhrp / show dmvpn

4.       Konfigurasi

Hapus interface tunnel 1 de semua router

R1-3# no interface tunnel 1

R1-HUB

#interface Tunnel1

#ip address 192.168.100.1 255.255.255.0

#ip nhrp network-id 111

#tunnel source 14.14.14.1

#tunnel mode gre multipoint

(tidak ada perintah ip nhrp map karena akan otomatis muncul)

R2-SPOKE1

#interface Tunnel1

#ip address 192.168.100.2 255.255.255.0

#ip nhrp map 192.168.100.1 14.14.14.1

#ip nhrp network-id 111

#ip nhrp nhs 192.168.100.1

#ip nhrp cache non-authoritative

#tunnel source 24.24.24.2

#tunnel destination 14.14.14.1
(Perintah ip nhrp nhs digunakan untuk menspesifikasikan next-hop server bagi spoke)

R3-SPOKE2

#interface Tunnel1

#ip address 192.168.100.3 255.255.255.0

#ip nhrp map 192.168.100.1 14.14.14.1

#ip nhrp network-id 111

#ip nhrp nhs 192.168.100.1

#tunnel source 34.34.34.3

#tunnel destination 14.14.14.1

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Verifikasi :

R1-HUB#show dmvpn

Legend: Attrb --> S - Static, D - Dynamic, I - Incompletea

        N - NATed, L - Local, X - No Socket

        # Ent --> Number of NHRP entries with same NBMA peer

Tunnel1, Type:Hub, NHRP Peers:2,

 # Ent  Peer NBMA Addr Peer Tunnel Add State  UpDn Tm Attrb

 ----- --------------- --------------- ----- -------- -----

     1      24.24.24.2   192.168.100.2    UP    never D

     1      34.34.34.3   192.168.100.3    UP    never D

R1-HUB#show ip nhrp

192.168.100.2/32 via 192.168.100.2, Tunnel1 created 00:18:45, expire 01:41:14

  Type: dynamic, Flags: unique registered

  NBMA address: 24.24.24.2

192.168.100.3/32 via 192.168.100.3, Tunnel1 created 00:17:42, expire 01:42:17

  Type: dynamic, Flags: unique registered

  NBMA address: 34.34.34.3

R1-HUB#show ip nhrp br

Target                     Via                    NBMA           Mode       Intfc   Claimed

192.168.100.2/32   192.168.100.2   24.24.24.2      dynamic  Tu1     <   >

192.168.100.3/32   192.168.100.3   34.34.34.3      dynamic  Tu1     <   >

Sampe disini saja gan,, simple kan ??