选拔考试例题-eNSP

网络拓扑：

img

要求说明：

  1. 按拓扑配置主机名和IP地址
  2. 总公司配置单臂路由使VLAN互通，子接口ID和VLAN ID一致，IP地址网络第一个可用地址，做相应的配置
  3. 分公司配置三层交换使VLAN间互通，VLANIF 的IP地址网络第一个可用地址，三层交换机使用VLANIF 100和R2通信，做相应配置
  4. R1、R2和3LSW 配置OSPF路由协议使全网互通
  5. 测试PC机之间的连通性

实验步骤

基础配置：

  1. 首先按照拓扑显示，为每台设备设置名称和IP

AR1：

system-view
sysname AR1

AR2：

system-view
sysname AR2

3LSW：

system-view
sysname 3LSW

SW1：

system-view
sysname SW1

SW2：

system-view
sysname SW2
  1. 按照题意可得知，每个VLAN的网关为此网段的第一个可用IP

PC1：

192.168.10.1

PC2：

192。168.20.1

PC3：

172.16.30.1

PC4：

172.16.40.1

总公司-单臂路由：

SW1：

vlan batch 10 20

int g0/0/11
port link-type access
port default vlan 10

int g0/0/12
port link-type access
port default vlan 20

int g0/0/1
port link-type trunk
port trunk allow-pass vlan all

AR1：

int g0/0/0.10
ip add 192.168.10.1 24		//配置网关
dot1q termination vid 10	//配置VLAN ID
arp broadcast enable		//开启子接口

int g0/0/0.20
ip add 192.168.20.1 24
dot1q termination vid 20
arp broadcast enable

测试：

//PC1 PING PC2
PC>ping 192.168.20.2

Ping 192.168.20.2: 32 data bytes, Press Ctrl_C to break
From 192.168.20.2: bytes=32 seq=1 ttl=127 time=62 ms
From 192.168.20.2: bytes=32 seq=2 ttl=127 time=78 ms
From 192.168.20.2: bytes=32 seq=3 ttl=127 time=78 ms
From 192.168.20.2: bytes=32 seq=4 ttl=127 time=63 ms
From 192.168.20.2: bytes=32 seq=5 ttl=127 time=78 ms

--- 192.168.20.2 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 62/71/78 ms

分公司-三层VLAN间互通：

SW2：

vlan batch 30 40

int g0/0/3
port link-type access
port default vlan 30

int g0/0/4
port link-type access
port default vlan 40

int g0/0/1
port link-type trunk
port trunk allow-pass vlan all

3LSW：

vlan batch 30 40

int g0/0/2
port link-type trunk
port trunk allow-pass vlan all

int vlanif 30
ip add 172.16.30.1 24

int vlanif 40
ip add 172.16.40.1 24

测试：

//PC3 PING PC4
PC>ping 172.16.40.1

Ping 172.16.40.1: 32 data bytes, Press Ctrl_C to break
From 172.16.40.1: bytes=32 seq=1 ttl=255 time=47 ms
From 172.16.40.1: bytes=32 seq=2 ttl=255 time=47 ms
From 172.16.40.1: bytes=32 seq=3 ttl=255 time=47 ms
From 172.16.40.1: bytes=32 seq=4 ttl=255 time=31 ms
From 172.16.40.1: bytes=32 seq=5 ttl=255 time=31 ms

--- 172.16.40.1 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 31/40/47 ms

OSPF全网互通：

3LSW：

vlan batch 100

int vlanif 100
ip add 2.2.2.2 30

int g0/0/1
port link-type access
port default vlan 100

AR2：

int g0/0/0
ip add 2.2.2.1 30

测试：

//3LSW PING AR2
ping 2.2.2.1
  PING 2.2.2.1: 56  data bytes, press CTRL_C to break
    Reply from 2.2.2.1: bytes=56 Sequence=1 ttl=255 time=80 ms
    Reply from 2.2.2.1: bytes=56 Sequence=2 ttl=255 time=50 ms
    Reply from 2.2.2.1: bytes=56 Sequence=3 ttl=255 time=50 ms
    Reply from 2.2.2.1: bytes=56 Sequence=4 ttl=255 time=40 ms
    Reply from 2.2.2.1: bytes=56 Sequence=5 ttl=255 time=10 ms

  --- 2.2.2.1 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 10/46/80 ms

以上两步是为了三层交换机与路由器进行通信，接下来进行OSPF配置，使全网互通

3LSW：

ospf
area 0
net 172.16.30.0 0.0.0.255	//宣告网络
net 172.16.40.0 0.0.0.255
net 2.2.2.0 0.0.0.3

AR2：

int g0/0/1
ip add 1.1.1.2 30

ospf
area 0
net 1.1.1.0 0.0.0.3
net 2.2.2.0 0.0.0.3

AR3：

int g0/0/1
ip add 1.1.1.1 30

ospf
area 0
net 1.1.1.0 0.0.0.3

测试：

//PC1 PING PC3
PC>ping 172.16.30.2

Ping 172.16.30.2: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 172.16.30.2: bytes=32 seq=2 ttl=125 time=109 ms
From 172.16.30.2: bytes=32 seq=3 ttl=125 time=125 ms
From 172.16.30.2: bytes=32 seq=4 ttl=125 time=94 ms
From 172.16.30.2: bytes=32 seq=5 ttl=125 time=62 ms

--- 172.16.30.2 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/97/125 ms

//PC4 PING PC1
PC>ping 192.168.10.2

Ping 192.168.10.2: 32 data bytes, Press Ctrl_C to break
From 192.168.10.2: bytes=32 seq=1 ttl=125 time=109 ms
From 192.168.10.2: bytes=32 seq=2 ttl=125 time=94 ms
From 192.168.10.2: bytes=32 seq=3 ttl=125 time=109 ms
From 192.168.10.2: bytes=32 seq=4 ttl=125 time=94 ms
From 192.168.10.2: bytes=32 seq=5 ttl=125 time=94 ms

--- 192.168.10.2 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 94/100/109 ms

实验总结：

在本次实验中主要考核单臂路由、三层交换机VLAN间通信和OSPF路由协议

实验文件下载 ：网络设备配置与安全