在一台三层交换上,不同VLAN相互通信配置方法_交换机教程-查字典教程网
在一台三层交换上,不同VLAN相互通信配置方法
在一台三层交换上,不同VLAN相互通信配置方法
发布时间:2016-12-21 来源:查字典编辑
摘要:本实验需求:通过在ciscocatalyst3550来规划VLAN100和VLAN200,并且配置DHCP让VLAN100人事部计算机获得I...

本实验需求:

通过在cisco catalyst 3550来规划VLAN 100 和VLAN 200,并且配置DHCP 让VLAN100人事部计算机获得IP地址为192.168.0.0/24,让VLAN200市场部计算机获得IP地址为172.16.0.0/24。因为市场部和人事部因为业务上的关系,需要两台服务器相互通信,所在还需要在3550上配置VLAN间相互通信。

实验拓扑:

实验过程 第一步 配置Catalyst 3550基础配置

复制代码代码如下:

Switch>

Switch>enable

Switch#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#host 3550

3550(config)#no ip do lo

3550(config)#line con 0

3550(config-line)#no exec-t

3550(config-line)#logg syn

3550(config-line)#exit

第二步 在Catalyst 3550 划分VLAN 100和VLAN 200 //进入全局配置模式下,划分VLAN(请问catalyst 3500支持在全局模式下划分VLAN吗?)

复制代码代码如下:

3550(config)#vlan 100

//给VLAN100命名

3550(config-vlan)#name renshibo

3550(config-vlan)#int f0/13

3550(config-if)#switchport mode access

3550(config-if)#switchport access vlan 100

3550(config-if)#spanning-tree portfast

//请问什么时候需要在交换机接口下配置portfast?这里如果不配置可以吗?

%Warning: portfast should only be enabled on ports connected to a single

host. Connecting hubs, concentrators, switches, bridges, etc... to this

interface when portfast is enabled, can cause temporary bridging loops.

Use with CAUTION

%Portfast has been configured on FastEthernet0/13 but will only

have effect when the interface is in a non-trunking mode.

3550(config-if)#vlan 200

3550(config-vlan)#name shichangbo

3550(config-vlan)#int f0/15

3550(config-if)#sw mo acc

3550(config-if)#sw acc vlan 200

3550(config-if)#spanning-tree portfast

%Warning: portfast should only be enabled on ports connected to a single

host. Connecting hubs, concentrators, switches, bridges, etc... to this

interface when portfast is enabled, can cause temporary bridging loops.

Use with CAUTION

%Portfast has been configured on FastEthernet0/15 but will only

have effect when the interface is in a non-trunking mode.

//验证VLAN的配置

3550#show vlan brief

VLAN Name Status Ports

---- -------------------------------- --------- -------------------------------

1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4

Fa0/5, Fa0/6, Fa0/7, Fa0/8

Fa0/9, Fa0/10, Fa0/11, Fa0/12

Fa0/14, Fa0/16, Fa0/17, Fa0/18

Fa0/23, Gi0/1, Gi0/2

100 renshibo active Fa0/13

200 shichangbo active Fa0/15

1002 fddi-default act/unsup

1003 token-ring-default act/unsup

1004 fddinet-default act/unsup

1005 trnet-default act/unsup

第三步 配置SVI(交换虚拟接口)

复制代码代码如下:

3550#conf t

Enter configuration commands, one per line. End with CNTL/Z.

//进入VLAN 100 虚拟接口下

3550(config)#int vlan 100

//增加接口描述,以便将来排错更加方便

3550(config-if)#description Connection to renshibo

//这里配置的IP地址就是人事部PC的默认网关地址,如果VLAN接口不配置IP地址,后面的DHCP配置中,PC能否获得IP地址吗??

3550(config-if)#ip add 192.168.0.1 255.255.255.0

3550(config-if)#no sh

3550(config-if)#int vlan 200

00:13:22: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan200, changed state to up

3550(config-if)#description Connection to shichangbo

3550(config-if)#ip add 172.16.0.1 255.255.255.0

3550(config-if)#no sh

3550(config-if)#

3550#conf t

//开启catalyst 3550三层交换路由功能(默认是关闭的)

请问cisco catalyst那些型号交换机是三层交换机?

3550(config)#ip routing

3550(config)#exit

3550#sh ip route

//两条直连路由条目

Codes: 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, E - EGP

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

Gateway of last resort is not set

172.16.0.0/24 is subnetted, 1 subnets

C 172.16.0.0 is directly connected, Vlan200

C 192.168.0.0/24 is directly connected, Vlan100

Designated bridge has priority 32768, address ccd1.0a80.0000

Designated port id is 129.65, designated path cost 0

Timers: message age 0, forward delay 0, hold 0

Number of transitions to forwarding state: 1

BPDU: sent 993, received 92

第四步 在Catalyst 3550上配置DHCP,以便于VLAN100和VLAN200下客户端获得IP地址,掩码,网关,DNS等

复制代码代码如下:

//全局下打开DHCP服务.默认是开启的吗?那为什么还要需要开启了?

3550(config)#service dhcp

//关闭dhcp 客户端IP冲突日志记录信息

3550(config)#no ip dhcp conflict logging

//配置地址池名称,地址池名称为任意字符(这里定义的名字VLAN的名称)

3550(config)#ip dhcp pool renshibo

//配置PC所获得网段地址范围,和掩码,(这里有几种命令语句格式)

(network 192.168.0.0 255.255.255.0)

3550(dhcp-config)#network 192.168.0.0 /24

//配置网关地址

3550(dhcp-config)#default-router 192.168.0.1

//配置DNS(域名解析服务器)可选配置

请问什么时候PC需要配置DNS地址?局域网通讯需要吗?

3550(dhcp-config)#dns 218.30.19.40 61.134.1.4

//配置域名

3550(dhcp-config)#domain-name www.cisco.com

//配置地址租期为永久

3550(dhcp-config)#lease infinite

3550(dhcp-config)#exit

//配置排除的IP地址范围,不从地址池内分配的地址,不配置排除地址可以吗?

3550(config)#ip dhcp excluded-address 192.168.0.1

3550(config)#ip dhcp pool shichangbo

3550(dhcp-config)#network 172.16.0.0 /24

3550(dhcp-config)#default-router 172.16.0.1

3550(dhcp-config)#dns 218.30.19.40 61.134.1.4

3550(dhcp-config)#domain-name www.cisco.com

3550(dhcp-config)#lease infinite

3550(dhcp-config)#exit

3550(config)#ip dhcp excluded-address 172.16.0.1

第五步 在市场部PC上验证是否能从catalyst 3550获得IP地址, 如图:开始-运行-cmd-ipconfig /all

第六步 在Catalyst 3550查看PC获得的IP地址是否正确

复制代码代码如下:

//查看DHCP绑定信息

3550#sh ip dhcp binding

IP address Client-ID/ (MAC地址) Lease expiration Type

Hardware address

172.16.0.2 0100.16d3.249f.fd Infinite Automatic

192.168.0.2 0100.1641.15e8.5c Infinite Automatic

第七步 在交换机测试是否可以ping通市场部和人事部PC

复制代码代码如下:

3550(config)#exit

3550#

00:26:41: %SYS-5-CONFIG_I: Configured from console by console

3550#ping 172.16.0.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 172.16.0.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms

3550#ping 192.168.0.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.0.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms

第八步 在市场部PC上用ping命令测试是否可以ping通VLAN100(人事部) 下PC 如图:测试结果如下,可以ping通,实验现象成功!

本文出自 “王万利的博客” 博客

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