Ushbu bob Dinamik ko'p nuqtali virtual nuqta tarmog'ini (dmvpn) o'z ichiga oladi va bir nechta joylarni ulash uchun undan foydalanadigan korxonalarning afzalliklarini ko'rsatadi

2-bosqich
Statik xaritalash bilan DMVPN 2-bosqich
Endi biz dinamik dinamik tunnellarga sho'ng'iymiz, bu erda spikerlar ham ko'p nuqtali tunnel sifatida sozlanadi. Barcha NHRP xaritalashlari statik bo'ladi, lekin gaplashish orqali muloqot amalga oshirilishi mumkin. 2-bosqichda tunnel rejimi gre ko'p nuqtali buyrug'i barcha spirallarga qo'shiladi. Hub konfiguratsiyasi birinchi misolimizdagi kabi bo'ladi. Biz 24-4-rasmdan foydalanamiz.

24-4-rasm. DMVPN 2-bosqich diagrammasi
Hub
Headquarters(config)#interface Tunnel 0
Headquarters(config-if)#ip address 10.10.10.1 255.255.255.0 Headquarters(config-if)#tunnel source e0/0
Headquarters(config-if)#ip nhrp authentication DMVPNB
Headquarters(config-if)#ip nhrp map 10.10.10.2 172.1.2.1
Headquarters(config-if)#ip nhrp map 10.10.10.3 172.1.3.1
Headquarters(config-if)#ip nhrp network-id 100
Headquarters(config-if)#tunnel mode gre multipoint
Headquarters(config-if)#ip nhrp map multicast dynamic
Branch1
Branch1(config)#interface Tunnel 0
Branch1(config-if)#ip address 10.10.10.2 255.255.255.0
Branch1(config-if)#tunnel source e0/0
Branch1(config-if)#ip nhrp map 10.10.10.1 172.1.1.1
Branch1(config-if)#ip nhrp map 10.10.10.3 172.1.3.1
Branch1(config-if)#ip nhrp network-id 100
Branch1(config-if)#ip nhrp authentication DMVPN
Branch1(config-if)#tunnel mode gre multipoint
Branch2
Branch2Branch2(config)#interface Tunnel 0
Branch2(config-if)#ip address 10.10.10.3 255.255.255.0
Branch2(config-if)#tunnel source e0/0
Branch2(config-if)#ip nhrp map 10.10.10.1 172.1.1.1
Branch2(config-if)#ip nhrp map 10.10.10.2 172.1.2.1
Branch2(config-if)#ip nhrp network-id 100
Branch2(config-if)#ip nhrp authentication DMVPN
Branch2(config-if)#tunnel mode gre multipoint
Endi DMVPN tunnellarini tekshiramiz:
Branch1(config-if)#do sh ip nhrp
10.10.10.1/32 via 10.10.10.1, Tunnel0 created 00:00:19, never expire
Type: static, Flags: authoritative
NBMA address: 172.1.1.1
10.10.10.3/32 via 10.10.10.3,Tunnel0 created 00:00:19, never expire
Type: static,Flags: authoritative
NBMA address: 172.1.3.1
Biz Branch1da markazga va boshqa spikerlarga o'rnatilgan statik tunnellarga ega ekanligini ko'rishimiz mumkin. Endi spikerlar bir-biri bilan to'g'ridan-to'g'ri gaplasha olishini tekshiramiz:
Branch1#traceroute 10.10.10.3
Type escape sequence to abort.
Tracing the route to 10.10.10.3
VRF info: (vrf in name/id, vrf out name/id)
1 10.10.10.3 12 msec 4 msec 8 msec
Biz spikerlar 2-bosqichda to'g'ridan-to'g'ri muloqot qilishlari mumkinligini ko'rishimiz mumkin.