VXLAN基礎實驗

 

 

實驗設備：2台vpc，1台路由器，2台CRV1000

實驗目的：同網段2台vpc跨越三層廣播域實現通信

通信原理：上面ospf區域打通后，利用vxlan看成大二層，實現通信

CSR1，R3，CSR2的ospf配置如下：

CSR1:
router ospf 1
 router-id 1.1.1.1
 network 1.1.1.1 0.0.0.0 area 0
 network 10.1.1.1 0.0.0.0 area 0

R2:
router ospf 1
 router-id 2.2.2.2
 network 10.1.1.2 0.0.0.0 area 0
 network 10.1.2.1 0.0.0.0 area 0

CSR2:
router ospf 1
 router-id 3.3.3.3
 network 3.3.3.3 0.0.0.0 area 0
 network 10.1.2.2 0.0.0.0 area 0

CSR1 VXLAN配置：

interface nve1
 source-interface Loopback0
 member vni 4096
  ingress-replication 3.3.3.3


interface GigabitEthernet2
 service instance 1 ethernet
  encapsulation untagged


bridge-domain 1 
 member vni 4096
 member GigabitEthernet2 service-instance 1

CSR2 VXLAN配置：

interface nve1
 source-interface Loopback0
 member vni 4096
  ingress-replication 1.1.1.1


interface GigabitEthernet2
 service instance 1 ethernet
  encapsulation untagged


bridge-domain 1 
 member vni 4096
 member GigabitEthernet2 service-instance 1

 

抓包分析：在CSR1的接口Gi1抓包

 

frame    Ethernet II                          ipv4              udp          VXLAN             Ethernet II                  ipv4
        src mac：50:00:00:01:00:00    src ip: 1.1.1.1    src port：51939    VNI：4096     src mac：00:50:79:66:68:04      src ip：192.168.1.10
        dst mac：aa:bb:cc:00:30:00    dst ip : 3.3.3.3    dst port：4789                  dst mac：00:50:79:66:68:05      dst ip：192.168.1.20

 

 

 

實驗結果輸出：