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VLAN的划分以及通过DHCP给所有主机自动分配IP,以及通信全网可达
2022-07-23 05:47:00 【.98℃】
目录
4.1. 交换机的配置(vlan划分和设置trunk链路):
4.2. 路由器r1和r2的配置(接口ip,DHCP,静态路由)
1. 要求
- 在每台交换机中分别创建vlan2和vlan3,并将图中pc1、pc3、pc5划分到对应的交换机的vlan2中、将pc2、pc4、pc6划分到对应交换机的vlan3中。
- 通过DHCP协议给计算机自动分配ip地址。
- 要求数据流量在全网中都能够通行。
2.拓扑图

3. 分析:
- 根据拓扑结构可知路由器分别划分出了三个广播域,故将其分成192.168.1.0/24;2.0/24;3.0/24的三个网段。
- 因为是在广播域下划分两个vlan,故将原网段均分。
- 两个路由器均需要开启DHCP。
- 全网可达,则需要实现不同vlan的交互,以及静态路由的设置。
4. 配置:
4.1. 交换机的配置(vlan划分和设置trunk链路):
- 交换机1的配置(其余三台类似)
[sw1]vlan 2
[sw1-vlan2]q
[sw1]vlan 3
[sw1]int e0/0/1
[sw1-Ethernet0/0/1]port link-type access
[sw1-Ethernet0/0/1]port def vlan 2
[sw1]int e0/0/2
[sw1-Ethernet0/0/2]port link-type access
[sw1-Ethernet0/0/2]port d vlan 3
[sw1]int g0/0/1
[sw1-GigabitEthernet0/0/1]port link-type trunk
[sw1-GigabitEthernet0/0/1]port trunk allow-pass vlan 2 to 3
4.2. 路由器r1和r2的配置(接口ip,DHCP,静态路由)
[r1]int g0/0/1.1
[r1-GigabitEthernet0/0/1.1]ip add 192.168.1.1 25
[r1-GigabitEthernet0/0/1.1]dot1q termination vid 2
[r1-GigabitEthernet0/0/1.1]arp broadcast enable
[r1]int g0/0/1.2
[r1-GigabitEthernet0/0/1.2]ip add 192.168.1.129 25
[r1-GigabitEthernet0/0/1.2]dot1q termination vid 3
[r1-GigabitEthernet0/0/1.2]arp broadcast en
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip add 192.168.3.1 24
[r1]dhcp en
[r1]ip pool p1
[r1-ip-pool-p1]network 192.168.1.0 mask 25
[r1-ip-pool-p1]gateway-list 192.168.1.1
[r1-ip-pool-p1]dns-list 114.114.114.114 8.8.8.8
[r1]dhcp en
[r1]ip pool p2
[r1-ip-pool-p2]network 192.168.1.128 mask 25
[r1-ip-pool-p2]gateway-list 192.168.1.129
[r1-ip-pool-p2]dns-list 114.114.114.114 8.8.8.8
[r1]int g0/0/1.1
[r1-GigabitEthernet0/0/1.1]dhcp select global
[r1]int g0/0/1.2
[r1-GigabitEthernet0/0/1.2]dhcp select global
[r1]ip route-static 192.168.2.0 24 192.168.3.2[r2]int g0/0/0
[r2-GigabitEthernet0/0/0]ip add 192.168.3.2 24
[r2-]int g0/0/1.1
[r2-GigabitEthernet0/0/1.1]ip add 192.168.2.1 25
[r2-GigabitEthernet0/0/1.1]dot1q termination vid 2
[r2-GigabitEthernet0/0/1.1]arp broadcast en
[r2]int g0/0/1.2
[r2-GigabitEthernet0/0/1.2]ip add 192.168.2.129 25
[r2-GigabitEthernet0/0/1.2]dot1q termination vid 3
[r2-GigabitEthernet0/0/1.2]arp broadcast en
[r2]dhcp en
[r2]ip pool p3
[r2-ip-pool-p3]network 192.168.2.0 mask 25
[r2-ip-pool-p3]gateway-list 192.168.2.1
[r2-ip-pool-p3]dns-list 114.114.114.114 8.8.8.8
[r2]dhcp en
[r2]ip pool p4
[r2-ip-pool-p4]network 192.168.2.128 mask 25
[r2-ip-pool-p4]gateway-list 192.168.2.129
[r2-ip-pool-p4]dns-list 114.114.114.114 8.8.8.8
[r2]int g0/0/1.1
[r2-GigabitEthernet0/0/1.1]dhcp select global
[r2]int g0/0/1.2
[r2-GigabitEthernet0/0/1.2]dhcp select global
[r2]ip route-static 192.168.1.0 24 192.168.3.15. 验证:
- DHCP自动划分IP结果:



- 实现通信(pc5->pc1,pc3->pc6):


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