SE 2014年5月5日

如图配置

 

某企业网络规划图（三台交换设备/三台路由设备）

接入层 SW1 连接终端用户

汇聚层 SW2 SW3

核心层 R1 R2 R5

1. 如图 SW1 SW2 SW3 物理链路两两相连接，网络中有两业务网络用Vlan10和Vlan20区分，要求保证同vlan业务在交换网络中正常通讯（使用STP技术来实现vlan的负载分担）

SW2为vlan 10的主根，SW3为备根

SW3为vlan 20的主根，SW2为备根

2.Sw2 和 Sw3 分别为Vlan10和Vlan20的网关设备

  Sw2上vlan 10网关地址为 192.168.1.1 24，vlan 20网关地址为 172.16.1.1  24

  Sw3上vlan 10网关地址为 192.168.1.2 24，vlan 20网关地址为 172.16.1.2  24

  要求SW2 和 SW3 基于vlan 10 和vlan 20做 VRRP网关互备：

  SW2为vlan 10业务的主网关（虚拟网关地址为 192.168.1.254），SW3位备份网关

  SW3为vlan 20业务的主网关（虚拟网关地址为 172.16.1.254），SW2位备份网关

  注意：要求通过侦测上行链路（合理递减优先级），实现主备切换网关

        保证vrrp协议的安全性

3. R1 R2 R5为核心层设备(合理规划IP地址)，R5连接一台Server，要求两vlan用户 只能够telnet不能够ping此Server

4. 用户均为动态获得地址信息，DHCP Server 为R5.

书写出实验步骤后进行实验练习！！！

步骤：

1、  完成交换机vlan划分和端口配置

 [SW1]vlan 10

[SW1]vlan 20

[SW2]vlan 10

[SW2]vlan 20

[SW3]vlan 10

[SW3]vlan 20

[SW1-vlan10]port e0/4/2

[SW1-vlan20]port e0/4/3

[SW1-Ethernet0/4/0]port link-type trunk

[SW1-Ethernet0/4/0]port trunk permit vlan 10 20

[SW1-Ethernet0/4/1]port link-type trunk

[SW1-Ethernet0/4/1]port trunk permit vlan 10 20

[SW2-Ethernet0/4/0]port trunk permit vlan 10 20

[SW2-Ethernet0/4/3]port trunk permit vlan 10 20 30

[SW3-Ethernet0/4/1]port trunk permit vlan 10 20

[SW3-Ethernet0/4/3]port trunk permit vlan 10 20 30

[SW2-Vlan-interface10]ip add 192.168.1.1 24

[SW2-Vlan-interface20]ip add 172.16.1.1 24

[SW3-Vlan-interface10]ip add 192.168.1.2 24

[SW3-Vlan-interface20]ip add 172.16.1.2 24

[SW2-Vlan-interface30]ip add 192.168.2.1 24

[SW3-Vlan-interface30]ip add 192.168.2.2 24

[SW2-Vlan-interface40]ip add 192.168.4.1 24

[SW3-Vlan-interface40]ip add 192.168.5.1 24

2、  交换机启用MSTP，创建实例，并设置主备根

[SW1]stp enable

[SW1]stp mode mstp

[SW2]stp enable

[SW2]stp mode mstp

[SW3]stp enable

[SW3]stp mode mstp

[SW2-mst-region]region-name cisco

 [SW2-mst-region]instance 1 vlan 10 

[SW2-mst-region]instance 2 vlan 20

[SW2-mst-region]active region-configuration

[SW3]stp region-configuration

[SW3-mst-region] region-name cisco

[SW3-mst-region] instance 1 vlan 10

[SW3-mst-region] instance 2 vlan 20

[SW3-mst-region] active region-configuration

[SW2]stp instance 1 root primary

[SW2]stp instance 2 root secondary

[SW3]stp instance 1 root secondary

[SW3]stp instance 2 root primary

3、  完成VRRP的基本配置

[SW2-Vlan-interface10]vrrp vrid 1 virtual-ip 192.168.1.254

[SW2-Vlan-interface10]vrrp vrid 1 priority 110

[SW2-Vlan-interface10]vrrp vrid 1 track interface Vlan-interface 40 reduced 20

[SW3-Vlan-interface10]vrrp vrid 1 virtual-ip 192.168.1.254

[SW3-Vlan-interface20]vrrp vrid 2 priority 110

[SW3-Vlan-interface20]vrrp vrid 2 track interface Vlan-interface 40 reduced 20

[SW3-Vlan-interface20]vrrp vrid 2 virtual-ip 172.16.1.254

[SW2-Vlan-interface20]vrrp vrid 2 virtual-ip 172.16.1.254

   [SW2-Vlan-interface10]vrrp vrid 1 authentication-mode md5 cisco

[SW3-Vlan-interface10]vrrp vrid 1 authentication-mode md5 cisco

[SW3-Vlan-interface20]vrrp vrid 2 authentication-mode md5 cisco

[SW2-Vlan-interface20]vrrp vrid 2 authentication-mode md5 cisco

4、  完成路由器OSPF配置

[RT1]ospf 1 router-id 1.1.1.1

[RT1-ospf-1]area 0

[RT1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0

[RT1-ospf-1-area-0.0.0.0]network 23.1.1.1 0.0.0.0

[RT1-ospf-1-area-0.0.0.0]network 12.1.1.1 0.0.0.0

[RT1-ospf-1-area-0.0.0.0]network 192.168.4.2 0.0.0.0

[RT3]ospf 1 router-id 3.3.3.3

[RT3-ospf-1]area 0

[RT3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0

[RT3-ospf-1-area-0.0.0.0]network 12.1.1.2 0.0.0.0

[RT3-ospf-1-area-0.0.0.0]network 35.1.1.2 0.0.0.0

[RT2]ospf 1 router-id 2.2.2.2

[RT2-ospf-1]area 0

[RT2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0

[RT2-ospf-1-area-0.0.0.0]network 23.1.1.2 0.0.0.0

[RT2-ospf-1-area-0.0.0.0]network 35.1.1.1 0.0.0.0

[RT2-ospf-1-area-0.0.0.0]network 192.168.5.2 0.0.0.0

[SW2-ospf-1-area-0.0.0.0]network 192.168.4.1 0.0.0.0

[SW3-ospf-1-area-0.0.0.0]network 192.168.5.1 0.0.0.0

[SW2-ospf-1]silent-interface Vlan-interface 10

[SW2-ospf-1]silent-interface Vlan-interface 20

[SW3-ospf-1]silent-interface Vlan-interface 10

[SW3-ospf-1]silent-interface Vlan-interface 20

[SW2-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255

[SW2-ospf-1-area-0.0.0.0]network 172.16.1.0 0.0.0.255

[SW3-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.0

 [SW3-ospf-1-area-0.0.0.0]network 172.16.1.0 0.0.0.255

5、  完成DHCP配置

[RT3]dhcp enable

[RT3]dhcp server ip-pool 192.168.1.0

[RT3-dhcp-pool-192.168.1.0]network 192.168.1.0 24

[RT3-dhcp-pool-192.168.1.0]dns-list 8.8.8.8

[RT3-dhcp-pool-192.168.1.0]domain-name cisco.com

[RT3-dhcp-pool-192.168.1.0]gateway-list 192.168.1.254

[RT3-dhcp-pool-192.168.1.0]expired day 7

[RT3]dhcp server ip-pool 172.16.1.0

[RT3-dhcp-pool-172.16.1.0]network 172.16.1.0 24

[RT3-dhcp-pool-172.16.1.0]dns-list 8.8.8.8

[RT3-dhcp-pool-172.16.1.0]domain-name cisco.com

[RT3-dhcp-pool-172.16.1.0]gateway-list 172.16.1.254

[RT3-dhcp-pool-172.16.1.0]expired day 7

[SW2]dhcp relay server-group 1 ip 8.8.8.8

[SW3]dhcp enable

[SW3]dhcp relay server-group 1 ip 8.8.8.8

[SW2-Vlan-interface10]dhcp select relay

[SW2-Vlan-interface10]dhcp relay server-select 1

[SW2-Vlan-interface20]dhcp select relay

[SW2-Vlan-interface20]dhcp relay server-select 1

[SW3-Vlan-interface10]dhcp select relay

[SW3-Vlan-interface10]dhcp relay server-select 1

[SW3-Vlan-interface20]dhcp  select relay

[SW3-Vlan-interface20]dhcp  relay server-select 1

[RT3]dhcp server forbidden-ip 192.168.1.1 192.168.1.2

[RT3]dhcp server forbidden-ip 192.168.1.25

[RT3]dhcp server forbidden-ip 172.16.1.1 172.16.1.2

[RT3]dhcp server forbidden-ip 172.16.1.254

6、  创建ACL，禁止vlan用户ping server且可以telnet

[RT3-acl-adv-3000]rule deny icmp source 192.168.1.0 0.0.0.255

[RT3-acl-adv-3000]rule deny icmp source 172.16.1.0 0.0.0.255

[RT3-acl-adv-3000]rule permit tcp source 192.168.1.0 0.0.0.255 destination-port eq 23

[RT3-acl-adv-3000]rule permit tcp source 172.16.1.0 0.0.0.255 destination-port eq 23

7、  接口调用ACL

[RT3]firewall enable

[RT3]firewall default permit

[RT3-GigabitEthernet0/0/1]firewall packet-filter 3000 inbound

[RT3-GigabitEthernet0/0/2]firewall packet-filter 3000 inbound

8、  RT3启用telnet 服务

[RT3]local-user RT3

[RT3-luser-RT3]password s

[RT3-luser-RT3]password simple RT3

[RT3-luser-RT3]service-type telnet

[RT3]user-interface vty 0 4

[RT3-ui-vty0-4]id 0 0

[RT3-ui-vty0-4]authentication-mode scheme

[RT3]telnet server enable

9、  实验测试：

Dhcp地址自动获取测试

 

   VRRP网关切换测试

   所有链路均正常时的网关主备如下

  

模拟链路故障，shutdown SW2的VLAN 40的SVI接口

 

重新激活后，抢占回来

 

Vlan业务PCping 测试server

 

telnet测试