谁可以帮忙解决一下思科的题

雾黎

三层交换机设置了DHCP协议之后，路由器也设置了默认路由，为什么PC机不能ping路由器的与三层交换机的连接接口。如果再加几台二层交换机又该怎么设置？

配置命令

1、三层交换机的配置

命名和创建vlan

Switch>en

Switch#config t

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

Switch(config)#hostname ZJHJ（主交换机）

ZJHJ(config)#vlan 10

ZJHJ(config-vlan)#vlan 20

ZJHJ(config-vlan)#vlan 30

ZJHJ(config-vlan)#vlan 40

ZJHJ(config-vlan)#vlan 50

ZJHJ(config-vlan)#vlan 60

ZJHJ(config-vlan)#vlan 70

ZJHJ(config-vlan)#vlan 80

ZJHJ(config-vlan)#exit

给vlan配置IP地址和地址池

ZJHJ(config)#int vlan 10

ZJHJ(config-if)#

%LINK-5-CHANGED: Interface Vlan10, changed state to up

ZJHJ(config-if)#ip add 192.168.10.30 255.255.255.224

ZJHJ(config-if)#int vlan 20

ZJHJ(config-if)#

%LINK-5-CHANGED: Interface Vlan20, changed state to up

ZJHJ(config-if)#ip add 192.168.10.62 255.255.255.224

ZJHJ(config-if)#int vlan 30

ZJHJ(config-if)#

%LINK-5-CHANGED: Interface Vlan30, changed state to up

ZJHJ(config-if)#ip add 192.168.10.94 255.255.255.224

ZJHJ(config-if)#

ZJHJ(config-if)#int vlan 40

ZJHJ(config-if)#

%LINK-5-CHANGED: Interface Vlan40, changed state to up

ZJHJ(config-if)#ip add 192.168.10.126 255.255.255.224

ZJHJ(config-if)#int vlan 50

ZJHJ(config-if)#

%LINK-5-CHANGED: Interface Vlan50, changed state to up

ZJHJ(config-if)#ip add 192.168.10.158 255.255.255.224

ZJHJ(config-if)#int vlan 60

ZJHJ(config-if)#

%LINK-5-CHANGED: Interface Vlan60, changed state to up

ZJHJ(config-if)#ip add 192.168.10.190 255.255.255.224

ZJHJ(config-if)#int vlan 70

ZJHJ(config-if)#

%LINK-5-CHANGED: Interface Vlan70, changed state to up

ZJHJ(config-if)#ip add 192.168.10.222 255.255.255.224

ZJHJ(config-if)#int vlan 80

ZJHJ(config-if)#

%LINK-5-CHANGED: Interface Vlan80, changed state to up

ZJHJ(config-if)#ip add 192.168.10.254 255.255.255.224

ZJHJ(config-if)#exit

ZJHJ(config)#ip dhcp pool vlan10

ZJHJ(dhcp-config)#default-router 192.168.10.30

ZJHJ(dhcp-config)#network 192.168.10.0 255.255.255.224

ZJHJ(dhcp-config)#ip dhcp pool vlan20

ZJHJ(dhcp-config)#default-router 192.168.10.62

ZJHJ(dhcp-config)#network 192.168.10.32 255.255.255.224

ZJHJ(dhcp-config)#ip dhcp pool vlan30

ZJHJ(dhcp-config)#default-router 192.168.10.94

ZJHJ(dhcp-config)#network 192.168.10.64 255.255.255.224

ZJHJ(dhcp-config)#ip dhcp pool vlan40

ZJHJ(dhcp-config)#default-router 192.168.10.126

ZJHJ(dhcp-config)#network 192.168.10.96 255.255.255.224

ZJHJ(dhcp-config)#ip dhcp pool vlan50

ZJHJ(dhcp-config)#default-router 192.168.10.158

ZJHJ(dhcp-config)#network 192.168.10.128 255.255.255.224

ZJHJ(dhcp-config)#ip dhcp pool vlan60

ZJHJ(dhcp-config)#default-router 192.168.10.190

ZJHJ(dhcp-config)#network 192.168.10.160 255.255.255.224

ZJHJ(dhcp-config)#ip dhcp pool vlan70

ZJHJ(dhcp-config)#default-router 192.168.10.222

ZJHJ(dhcp-config)#network 192.168.10.192 255.255.255.224

ZJHJ(dhcp-config)#ip dhcp pool vlan80

ZJHJ(dhcp-config)#default-router 192.168.10.254

ZJHJ(dhcp-config)#network 192.168.10.224 255.255.255.224

ZJHJ(dhcp-config)#exit

三层交换机的默认路由设置

ZJHJ(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.2

手动设置三层交换机f0/1-8为串口分别手动设置一号到四号交换机的f0/1为串口

1号房换机配置

Switch>en

Switch#config t

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

Switch(config)#hostname 1haofang

1haofang(config)#vlan 10

1haofang(config-if)#int ran f0/2-24

1haofang(config-if-range)#sw acc vlan 10

2号房换机配置

Switch>en

Switch#config t

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

Switch(config)#hostname 2haofang

2haofang(config)#vlan 20

2haofang(config-vlan)#int ran f0/2-24

2haofang(config-if-range)#sw acc vlan 20

2haofang(config-if-range)#

3号房换机配置

Switch>en

Switch#config t

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

Switch(config)#hostname 3haofang

3haofang(config)#vlan 30

3haofang(config-vlan)#int ran f0/2-24

3haofang(config-if-range)#sw acc vlan 30

4号房换机配置

Switch>en

Switch#config t

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

Switch(config)#hostname 4haofang

4haofang(config)#vlan 40

4haofang(config-vlan)#int ran f0/2-24

4haofang(config-if-range)#sw acc vlan 40

4haofang(config-if-range)#

5号房换机配置

Switch>en

Switch#config t

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

Switch(config)#hostname 5haofang

5haofang(config)#vlan 50

5haofang(config-vlan)#int ran f0/2-24

5haofang(config-if-range)#sw acc vlan 50

5haofang(config-if-range)#

6号房换机配置

Switch>en

Switch#config t

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

Switch(config)#hostname 6haofang

6haofang(config)#vlan 60

6haofang(config-vlan)#int ran f0/2-24

6haofang(config-if-range)#sw acc vlan 60

6haofang(config-if-range)#

7号房换机配置

Switch>en

Switch#config t

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

Switch(config)#hostname 7haofang

7haofang(config)#vlan 70

7haofang(config-vlan)#int ran f0/2-24

7haofang(config-if-range)#sw acc vlan 70

7haofang(config-if-range)#

8号房换机配置

Switch>en

Switch#config t

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

Switch(config)#hostname 8haofang

8haofang(config)#vlan 80

8haofang(config-vlan)#int ran f0/2-24

8haofang(config-if-range)#sw acc vlan 80

8haofang(config-if-range)#

路由器配置

Router>enable

Router#configure terminal

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

Router(config)#hostname ZLY

ZLY(config-if)#int f1/0

ZLY(config-if)#ip add 192.168.1.2  255.255.255.224

ZLY(config-if)#no shutdown

Router(config-if)#

%LINK-5-CHANGED: Interface FastEthernet1/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up

雾黎

江湖救急，

anubis_amon

三层交换机还需要起一个SVI，配上192.168.1网段的IP地址， 你现在交换机跟路由器没有直连网段，所以下层PC机PING不到路由器的。

雾黎

anubis_amon 发表于 2018-4-26 17:00
三层交换机还需要起一个SVI，配上192.168.1网段的IP地址， 你现在交换机跟路由器没有直连网段，所以下层PC ...

是三层交换机和路由器之间需要一个网段吗，有试过的，还设置了默认路由回指，但是pc机还是ping不通

anubis_amon

雾黎 发表于 2018-4-26 20:30
是三层交换机和路由器之间需要一个网段吗，有试过的，还设置了默认路由回指，但是pc机还是ping不通

路由器跟三层交换机之间肯定需要一个直连网段的，这样连接之后其实相当于路由器跟PC都是分属在同一个三层交换机下不同VLAN的，然后三层交换机起了路由功能，VLAN间就能相互通信。看网络设备的配置还真没看出啥毛病来。我感觉建好交换机跟路由器的直连网段，应该就能通信了。PC能正常获得IP和网关吧？

black105133

501876383@qq.co

三层开启：IP routing就好了