首先，我们从R1的配置开始。R1连接了两个网络：192.168.1.0/24和192.168.12.0/24。在配置界面中，我们首先设置了R1的接口ip地址，确保每个接口都正确连接到对应的网络。通过查看接口IP，我们可以看到R1的各个接口状态和IP地址分配情况。此外，我们还查看了R1的路由表，确认了各个网络的连接状态和路由信息。
接下来，我们转向R2。R2连接了192.168.12.0/24和192.168.23.0/24两个网络，它的配置与R1类似，同样是设置接口IP地址，并查看接口状态和路由表。在R2的路由表中，我们注意到它通过静态路由将192.168.1.0/24和192.168.3.0/24网络路由到R1。
然后是R3，它连接了192.168.23.0/24和192.168.3.0/24两个网络。与R1和R2一样，我们设置了R3的接口IP地址，并查看了接口状态和路由表。R3的路由表显示，它通过静态路由将192.168.1.0/24和192.168.12.0/24网络路由到R2。
为了测试网络的连通性，我们还配置了两个VPC：vpc4和vpc5。vpc4被配置为192.168.1.2/24网络，网关为192.168.1.254；vpc5被配置为192.168.3.2/24网络，网关为192.168.3.254。这两个VPC分别代表两个独立的网络终端。
最后，我们在vpc4上执行ping操作，测试到vpc5的连通性。结果显示，vpc4与vpc5之间能够成功通信，这意味着我们的网络配置是正确的，数据包能够在这两个网络之间自由传输。
在这个过程中，我们不仅配置了路由器和VPC的IP地址，还设置了静态路由来确保不同网络之间的通信。查看每个设备的接口状态和路由表是验证配置正确性的关键步骤。通过这种方法，我们能够确保网络中的每个设备都能够正确地路由数据包，从而实现整个网络环境的稳定运行。
在网络配置中，细节至关重要。每一步的准确性和精确性都会影响到整个网络的性能和稳定性。通过这个案例，我们可以看到，从配置路由器到测试网络连通性，每一步都需要仔细的操作和验证。只有这样，我们才能构建出一个高效、稳定的网络环境。
实验拓扑
配置R1
Router(config) R1(config) R1(config-if) R1(config-if) R1(config-if) R1(config-if) R1(config-if) R1(config) R1(config)
查看接口ip
R1 Interface IP-Address OK? Method Status Protocol Ethernet0/0 192.168.12.1 YES manual up up Ethernet0/1 192.168.1.254 YES manual up up Ethernet0/2 unassigned YES unset administratively down down Ethernet0/3 unassigned YES unset administratively down down Serial1/0 unassigned YES unset administratively down down Serial1/1 unassigned YES unset administratively down down Serial1/2 unassigned YES unset administratively down down Serial1/3 unassigned YES unset administratively down down
查看R1路由表
R1
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.1.0/24 is directly connected, Ethernet0/1
L 192.168.1.254/32 is directly connected, Ethernet0/1
S 192.168.3.0/24 [1/0] via 192.168.12.2
192.168.12.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.12.0/24 is directly connected, Ethernet0/0
L 192.168.12.1/32 is directly connected, Ethernet0/0
S 192.168.23.0/24 [1/0] via 192.168.12.2
配置R2
Router>enable router Router(config) R2(config) R2(config-if) R2(config-if) R2(config-if) R2(config-if) R2(config-if) R2(config) R2(config)
查看接口ip
R2 Interface IP-Address OK? Method Status Protocol Ethernet0/0 192.168.12.2 YES manual up up Ethernet0/1 192.168.23.2 YES manual up up Ethernet0/2 unassigned YES unset administratively down down Ethernet0/3 unassigned YES unset administratively down down Serial1/0 unassigned YES unset administratively down down Serial1/1 unassigned YES unset administratively down down Serial1/2 unassigned YES unset administratively down down Serial1/3 unassigned YES unset administratively down down
查看路由
R2
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
S 192.168.1.0/24 [1/0] via 192.168.12.1
S 192.168.3.0/24 [1/0] via 192.168.23.3
192.168.12.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.12.0/24 is directly connected, Ethernet0/0
L 192.168.12.2/32 is directly connected, Ethernet0/0
192.168.23.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.23.0/24 is directly connected, Ethernet0/1
L 192.168.23.2/32 is directly connected, Ethernet0/1
配置R3
Router>enable Router Router(config) R3(config) R3(config) R3(config-if) R3(config-if) R3(config-if) R3(config-if) R3(config-if) R3(config) R3(config)
查看接口ip
R3 Interface IP-Address OK? Method Status Protocol Ethernet0/0 192.168.23.3 YES manual up up Ethernet0/1 192.168.3.254 YES manual up up Ethernet0/2 unassigned YES unset administratively down down Ethernet0/3 unassigned YES unset administratively down down Serial1/0 unassigned YES unset administratively down down Serial1/1 unassigned YES unset administratively down down Serial1/2 unassigned YES unset administratively down down Serial1/3 unassigned YES unset administratively down down
查看路由
R3
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
S 192.168.1.0/24 [1/0] via 192.168.23.2
192.168.3.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.3.0/24 is directly connected, Ethernet0/1
L 192.168.3.254/32 is directly connected, Ethernet0/1
S 192.168.12.0/24 [1/0] via 192.168.23.2
192.168.23.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.23.0/24 is directly connected, Ethernet0/0
L 192.168.23.3/32 is directly connected, Ethernet0/0
配置vpc4
VPCS> ip 192.168.1.2/24 192.168.1.254 Checking for duplicate address... VPCS : 192.168.1.2 255.255.255.0 gateway 192.168.1.254
配置vpc5
VPCS> ip 192.168.3.2/24 192.168.3.254 Checking for duplicate address... VPCS : 192.168.3.2 255.255.255.0 gateway 192.168.3.254
在vpc4上ping vpc5测试连通性
VPCS> ping 192.168.3.2 84 Bytes from 192.168.3.2 icmp_seq=1 ttl=61 time=0.958 ms 84 bytes from 192.168.3.2 icmp_seq=2 ttl=61 time=0.785 ms 84 bytes from 192.168.3.2 icmp_seq=3 ttl=61 time=1.050 ms 84 bytes from 192.168.3.2 icmp_seq=4 ttl=61 time=0.823 ms 84 bytes from 192.168.3.2 icmp_seq=5 ttl=61 time=0.827 ms
审核编辑：汤梓红
