CCNP - DMVPN Phase 1

 

Lab 15 DMVPN (Dynamic Multipoint Virtual Private Network)

DMVPN Phase 1
• Hub menggunakan mGRE tunnel
• Spokes menggunakan GRE tunnel
• Multicast & Unicast hanya terjadi antara HUB dan SPOKE
(antar spoke berkomunikasi melalui hub )
• Tidak membutuhkan command ip nhrp map multicast dynamic atau ip nhrp
map multicast x.x.x.x jika tidak menggukanakan routing protocol
DMVPN Phase 2
• Hub menggunakan mGRE tunnel
• Spoke menggukan mGRE tunnel
• Antar spoke saling berkomunikasi secara langsung/directly
DMVPN Phase 3
Sama seperti phase 2, namun menggunakan command “no next-hop-self eigrp”
• ip nhrp redirect di HUB
• ip nhrp shortcut di SPOK

Metode LAB
• Gunakan topologi di atas, konfigurasikan pengalamatan ip standard IDN
• Konfigurasi Default di R1, R2 dan R3
• Konfigurasi MGRE tunnel di HUB dan GRE tunnel di spoke
• Konfigurasikan dynamic mapping, gunakan perintah ip nhrp nhs
pada SPOKE untuk request ke HUB
Dalam LAB ini, kita akan mengkonfigurasi :
• HUB menggunakan MGRE tunnel
• SPOKE menggunakan GRE tunnel
• Untuk ip private/tunnel,berikut konfigurasinya :
- R1-HUB = 192.168.100.1/24
- R2-Spoke1 = 192.168.100.2/24
- R3-Spoke2 = 192.168.100.3/24
• Multicast dan unicast hanya di antara HUB dan SPOKE
3. Verifikasi LAB
• Pastikan default route jalan, semua router dapat melakukan ping
• Pastikan HUB mempunyai 2 peers, digunakan perintah showdmvpn
• pastikan ip tunnel sudah benar, gunakan perintah show ip nhrp


jangan lupa berikan hostname pada tiap router
contoh Konfigurasi

Router(config)#hostname HUB
HUB(config)#int f0/0
HUB(config-if)#ip address 12.12.12.1 255.255.255.0
HUB(config-if)#no sh
HUB(config-if)#ex
HUB(config)#ip route 0.0.0.0 0.0.0.0 12.12.12.2 

Router#config t
Router(config)#hostname Spoke-1
Spoke-1(config)#int f0/0
Spoke-1(config-if)#ip add 23.23.23.1 255.255.255.0
Spoke-1(config-if)#no sh
Spoke-1(config-if)#ex
Spoke-1(config)#ip route 0.0.0.0 0.0.0.0 23.23.23.2

Router(config)#hostname Spoke-2
Spoke-2(config)#interface fa0/0
Spoke-2(config-if)#ip add 24.24.24.1 255.255.255.0
Spoke-2(config-if)#no sh
Spoke-2(config-if)#ex
Spoke-2(config)#ip route 0.0.0.0 0.0.0.0 24.24.24.2 

Router(config)#hostname internet
internet(config)#interface fa0/0
internet(config-if)#ip add 12.12.12.2 255.255.255.0
internet(config-if)#no sh
internet(config-if)#ex
internet(config)#interface fa1/0
internet(config-if)#ip add 23.23.23.2 255.255.255.0
internet(config-if)#no sh
internet(config-if)#ex
internet(config)#interface fa1/1
internet(config-if)#ip add 24.24.24.2 255.255.255.0
internet(config-if)#no sh

Cek ping 

HUB#ping 23.23.23.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 23.23.23.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 45/61/73 ms 

konfigurasi tunnel nya

HUB(config)#interface tunnel0
HUB(config-if)#ip address 192.168.10.1 255.255.255.0
HUB(config-if)#tunnel source 12.12.12.1
HUB(config-if)#tunnel mode gre multipoint
HUB(config-if)#ip nhrp network-id 1
HUB(config-if)#ip nhrp authentication IDN
HUB(config-if)#ex

Spoke-1(config)#int tunnel0
Spoke-1(config-if)#ip add 192.168.10.2 255.255.255.0
Spoke-1(config-if)#tunnel source 23.23.23.1
Spoke-1(config-if)#tunnel destination 12.12.12.1
Spoke-1(config-if)#ip nhrp network-id 1
Spoke-1(config-if)#ip nhrp authentication IDN
Spoke-1(config-if)#ip nhrp map 192.168.10.1 12.12.12.1
Spoke-1(config-if)#ip nhrp nhs 192.168.10.1
Spoke-1(config-if)#ex

Spoke-2(config)#int tunnel0
Spoke-2(config-if)#ip add 192.168.10.3 255.255.255.0
Spoke-2(config-if)#tunnel source 24.24.24.1
Spoke-2(config-if)#tunnel destination 12.12.12.1
Spoke-2(config-if)#ip nhrp network-id 1
Spoke-2(config-if)#ip nhrp authentication IDN
Spoke-2(config-if)#ip nhrp map 192.168.10.1 12.12.12.1
Spoke-2(config-if)#ip nhrp nhs 192.168.10.1
Spoke-2(config-if)#ex

Sekarang kita verifikasi

HUB#show dmvpn
Legend: Attrb --> S - Static, D - Dynamic, I - Incomplete
N - NATed, L - Local, X - No Socket
# Ent --> Number of NHRP entries with same NBMA peer
NHS Status: E --> Expecting Replies, R --> Responding, W --> Waiting
UpDn Time --> Up or Down Time for a Tunnel
=======================================================
Interface: Tunnel0, IPv4 NHRP Details Type:Hub, NHRP Peers:2,
# Int Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb
----- --------------- --------------- ----- -------- -----
1 23.23.23.1............................. 192.168.10.2 UP 00:12:19 D
1 24.24.24.1                                192.168.10.3 UP 00:05:44 D 

Cek NHRP 

HUB#show ip nhrp
192.168.10.2/32 via 192.168.10.2 Tunnel0 created 00:12:36, expire
01:47:23 Type: dynamic, Flags: unique registered used
NBMA address: 23.23.23.1
192.168.10.3/32 via 192.168.10.3 Tunnel0 created 00:06:02, expire
01:53:57
Type: dynamic, Flags: unique registered used
NBMA address: 24.24.24.1 

Cek ping  antar tunnel

HUB#ping 192.168.10.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 26/54/78 ms

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