VLAN 实验

原创已于 2022-02-17 00:30:37 修改 · 4.8k 阅读

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#网络 #安全

于 2022-02-17 00:28:43 首次发布

实验涉及创建VLAN并配置R1作为DHCP服务器，服务于不同网段的PC。LSW1、LSW2、LSW3的接口被配置为混杂或接入模式，允许特定VLAN标签。最终，PC1和PC3能够ping通192.168.2.0网段的设备，PC4能ping通PC5但无法ping通PC6。

一：实验要求

二：实验拓扑图

pc1和pc3在同一个网段，IP配置为：192.168.1.0

pc2/4/5/6在同一个网段，IP配置为：192.168.2.0

三：创建VLAN

四：对R1配置DHCP服务

首先开启全局dhcp服务，然后在对每个接口开启dhcp服务

开启全局dhcp服务
dhcp enable

对接口g0/0/0配置IP并且启用，将他设置为vlan 3，4，5的服务器

然后配置池子v2

配置池子V3

结果是：

设置子接口0/0/0.1来配置vlan2的服务器

五：对交换机的配置

LSW1

接口e0/0/4为混杂接口，带v 2的标签，不带vlan 3 to 5的标签

接口e0/0/1为混杂接口模式，带有所有的标签

接口e0/0/2为接入模式因为要求配置为access接口，修改默认pvid为2。

接口e0/0/3为混杂模式，不允许所有vlan，pvid为4

结果是：

LSW２

ｅ0/0/１为接口模式，允许vlan 2 to 5 的标签

ｅ0/0/２为混杂接口模式，允许vlan 2 to 5 的标签

ｅ0/0/3 为接入接口模式，pvid为2

ｅ0/0/4 为混杂接口模式，pvid为4，不允许带vlan 1 to 4 的标签

结果是：

LSW3

ｅ0/0/1 为混杂接口模式，允许带vlan2 to 5 所有标签

ｅ0/0/２为混杂接口模式，pvid为4，不允许带vlan 2 to 4 标签

ｅ0/0/３为混杂接口模式，pvid为5，不允许带vlan 2 to 3 5 标签

结果是：

六：最后结果

PC1 可以ping 2/4/5/6

PC>ping 192.168.2.250

Ping 192.168.2.250: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.2.250: bytes=32 seq=2 ttl=127 time=78 ms
From 192.168.2.250: bytes=32 seq=3 ttl=127 time=79 ms
From 192.168.2.250: bytes=32 seq=4 ttl=127 time=93 ms
From 192.168.2.250: bytes=32 seq=5 ttl=127 time=94 ms

--- 192.168.2.250 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/86/94 ms

PC>ping 192.168.2.253

Ping 192.168.2.253: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.2.253: bytes=32 seq=2 ttl=127 time=110 ms
From 192.168.2.253: bytes=32 seq=3 ttl=127 time=109 ms
From 192.168.2.253: bytes=32 seq=4 ttl=127 time=109 ms
From 192.168.2.253: bytes=32 seq=5 ttl=127 time=94 ms

--- 192.168.2.253 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/105/110 ms

PC>ping 192.168.2.252

Ping 192.168.2.252: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.2.252: bytes=32 seq=2 ttl=127 time=125 ms
From 192.168.2.252: bytes=32 seq=3 ttl=127 time=125 ms
From 192.168.2.252: bytes=32 seq=4 ttl=127 time=140 ms
From 192.168.2.252: bytes=32 seq=5 ttl=127 time=78 ms

--- 192.168.2.252 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/117/140 ms

PC>ping 192.168.2.251

Ping 192.168.2.251: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.2.251: bytes=32 seq=2 ttl=127 time=94 ms
From 192.168.2.251: bytes=32 seq=3 ttl=127 time=141 ms
From 192.168.2.251: bytes=32 seq=4 ttl=127 time=125 ms
From 192.168.2.251: bytes=32 seq=5 ttl=127 time=125 ms

--- 192.168.2.251 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/121/141 ms

PC3 可以ping 2/4/5/6

PC>ping 192.168.2.250

Ping 192.168.2.250: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.2.250: bytes=32 seq=2 ttl=127 time=78 ms
From 192.168.2.250: bytes=32 seq=3 ttl=127 time=79 ms
From 192.168.2.250: bytes=32 seq=4 ttl=127 time=93 ms
From 192.168.2.250: bytes=32 seq=5 ttl=127 time=94 ms

--- 192.168.2.250 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/86/94 ms

PC>ping 192.168.2.253

Ping 192.168.2.253: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.2.253: bytes=32 seq=2 ttl=127 time=110 ms
From 192.168.2.253: bytes=32 seq=3 ttl=127 time=109 ms
From 192.168.2.253: bytes=32 seq=4 ttl=127 time=109 ms
From 192.168.2.253: bytes=32 seq=5 ttl=127 time=94 ms

--- 192.168.2.253 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/105/110 ms

PC>ping 192.168.2.252

Ping 192.168.2.252: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.2.252: bytes=32 seq=2 ttl=127 time=125 ms
From 192.168.2.252: bytes=32 seq=3 ttl=127 time=125 ms
From 192.168.2.252: bytes=32 seq=4 ttl=127 time=140 ms
From 192.168.2.252: bytes=32 seq=5 ttl=127 time=78 ms

--- 192.168.2.252 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/117/140 ms

PC>ping 192.168.2.251

Ping 192.168.2.251: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.2.251: bytes=32 seq=2 ttl=127 time=94 ms
From 192.168.2.251: bytes=32 seq=3 ttl=127 time=141 ms
From 192.168.2.251: bytes=32 seq=4 ttl=127 time=125 ms
From 192.168.2.251: bytes=32 seq=5 ttl=127 time=125 ms

--- 192.168.2.251 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/121/141 ms

PC4可以ping PC5,不能ping pc6


PC>ping 192.168.2.252

Ping 192.168.2.252: 32 data bytes, Press Ctrl_C to break
From 192.168.2.252: bytes=32 seq=1 ttl=128 time=78 ms
From 192.168.2.252: bytes=32 seq=2 ttl=128 time=62 ms
From 192.168.2.252: bytes=32 seq=3 ttl=128 time=47 ms
From 192.168.2.252: bytes=32 seq=4 ttl=128 time=47 ms
From 192.168.2.252: bytes=32 seq=5 ttl=128 time=47 ms

--- 192.168.2.252 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 47/56/78 ms

PC>ping 192.168.2.251

Ping 192.168.2.251: 32 data bytes, Press Ctrl_C to break
From 192.168.2.253: Destination host unreachable
From 192.168.2.253: Destination host unreachable
From 192.168.2.253: Destination host unreachable
From 192.168.2.253: Destination host unreachable
From 192.168.2.253: Destination host unreachable

--- 192.168.2.251 ping statistics ---
  5 packet(s) transmitted
  0 packet(s) received
  100.00% packet loss

PC>