三层交换与DHCP中继

来源：互联网发布：光纤分布式数据接口编辑：程序博客网时间：2024/05/21 07:51

三层交换

实验任务和目标：

任务1.配置三层交换，使内部VLAN间互通。

任务2.配置DHCP中继，使VLAN2中的DHCP SERVER对VLAN3中的CLIENT生效。【截图验证】

操作过程及配置说明（和上面图片略有改变）：

F0/1连接DHCP服务器，属于VLAN 2

F0/2连接客户机，属于VLAN3

F0/3空

任务一：

Sw2三层交换机配置：

Router#vlan da

Router(vlan)#vtp domain jiawei

Router(vlan)#vtp server

Device mode already VTP SERVER.

Router(vlan)#vlan 2

VLAN 2 added:

Name: VLAN0002

Router(vlan)#vlan 3

VLAN 3 added:

Name: VLAN0003

Router(vlan)#exit

Router(config)#interface f0/15

Router(config-if)#sw mo tr

Router(config)#ip routing

Router(config)#interface vlan 2

Router(config-if)#ip address 192.168.2.254 255.255.255.0

Router(config)#interface vlan 3

Router(config-if)#ip address 192.168.3.254 255.255.255.0

Router(config)#interface f0/0

Router(config-if)#no switchport

Router(config-if)#ip address 192.168.5.1 255.255.255.0

Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.5.2

Router#show ip route

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

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 192.168.5.2 to network 0.0.0.0

C 192.168.5.0/24 is directly connected, FastEthernet0/0

C 192.168.2.0/24 is directly connected, Vlan2

C 192.168.3.0/24 is directly connected, Vlan3

S* 0.0.0.0/0 [1/0] via 192.168.5.2

Sw1二层交换机配置：

Router#vlan da

Router(vlan)#vtp client

Setting device to VTP CLIENT mode.

Router(vlan)#vtp domain jiawei

Changing VTP domain name from NULL to jiawei

Router(vlan)#exit

In CLIENT state, no apply attempted.

Exiting....

Router(config)#interface f0/15

Router(config-if)#sw mo tr

Router(config)#interface f0/1

Router(config-if)#switchport access vlan 2

Router(config)#interface f0/2

Router(config-if)#switchport access vlan 3

Router#show vlan-sw

VLAN Name Status Ports

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

1 default active Fa0/0, Fa0/3, Fa0/4, Fa0/5

Fa0/6, Fa0/7, Fa0/8, Fa0/9

Fa0/10, Fa0/11, Fa0/12, Fa0/13

Fa0/14

2 VLAN0002 active Fa0/1

3 VLAN0003 active Fa0/2

1002 fddi-default active

1003 token-ring-default active

1004 fddinet-default active

1005 trnet-default active

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2

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

1 enet 100001 1500 - - - - - 1002 1003

2 enet 100002 1500 - - - - - 0 0

3 enet 100003 1500 - - - - - 0 0

1002 fddi 101002 1500 - 0 - - - 1 1003

1003 tr 101003 1500 1005 0 - - srb 1 1002

1004 fdnet 101004 1500 - - 1 ibm - 0 0

1005 trnet 101005 1500 - - 1 ibm - 0 0

任务二：

在三层交换机上配置

Router(config)#interface vlan 3

Router(config-if)#ip helper-address 192.168.2.1

DHCP服务器：

DHCP

客户机：