IP综合实验

1.配置eth-trunk进行绑定

[LSW1]interface Eth-Trunk 0

[LSW1-Eth-Trunk0]q

[LSW1]interface g0/0/2

[LSW1-GigabitEthernet0/0/2]eth-trunk 0

[LSW1-GigabitEthernet0/0/2]int g0/0/3
[LSW1-GigabitEthernet0/0/3]eth-trunk 0

[LSW1-GigabitEthernet0/0/3]display eth-trunk 0

2.创建vlan，划分接口类型

[LSW1]vlan 2

[LSW1]port-group group-member g0/0/4 to g0/0/5 Eth-Trunk 0

[LSW1-port-group]port link-type trunk
[LSW1-GigabitEthernet0/0/4]port link-type trunk
[LSW1-GigabitEthernet0/0/5]port link-type trunk

[LSW1-port-group]port trunk allow-pass vlan 2
[LSW1-GigabitEthernet0/0/4]port trunk allow-pass vlan 2
[LSW1-GigabitEthernet0/0/5]port trunk allow-pass vlan 2
[LSW1-Eth-Trunk0]port trunk allow-pass vlan 2

[LSW2]vlan 2
[LSW2-vlan2]q
[LSW2]port-group group-member g0/0/4 to g0/0/5 Eth-Trunk 0
[LSW2-port-group]port trunk allow-pass vlan 2
[LSW2-Eth-Trunk0]port trunk allow-pass vlan 2

[LSW3]vlan 2
[LSW3-vlan2]q
[LSW3-Ethernet0/0/3]int e0/0/4
[LSW3-Ethernet0/0/4]port link-type access
[LSW3-Ethernet0/0/4]port default vlan 2
[LSW3-Ethernet0/0/4]q
[LSW3]port-group group-member e0/0/1 to e0/0/2
[LSW3-port-group]port link-type trunk
[LSW3-port-group]port trunk allow-pass vlan 2

[LSW4]vlan 2
[LSW4-vlan2]q
[LSW4]int e0/0/4
[LSW4-Ethernet0/0/4]port link-type access
[LSW4-Ethernet0/0/4]port default vlan 2
[LSW4-Ethernet0/0/4]q
[LSW4]port-group group-member e0/0/1 to e0/0/2
[LSW4-port-group]port link-type trunk
[LSW4-port-group]port trunk allow-pass vlan 2

3.配置生成树：

[LSW1]stp region-configuration
[LSW1-mst-region]region-name a
[LSW1-mst-region]instance 1 vlan 1
[LSW1-mst-region]instance 2 vlan 2
[LSW1-mst-region]active region-configuration

[LSW1]stp instance 1 root primary
[LSW1]stp instance 2 root secondary

[LSW1]stp instance 0 root primary

[LSW2]stp region-configuration
[LSW2-mst-region]instance 1 vlan 1
[LSW2-mst-region]instance 2 vlan 2
[LSW2-mst-region]active region-configuration

[LSW2]stp instance 1 root secondary
[LSW2]stp instance 2 root primary

[LSW2]stp instance 0 root secondary

[LSW3]stp region-configuration
[LSW3-mst-region]region-name a
[LSW3-mst-region]instance 1 vlan 1
[LSW3-mst-region]instance 2 vlan 2
[LSW3-mst-region]active region-configuration

[LSW4]stp region-configuration
[LSW4-mst-region]region-name a
[LSW4-mst-region]instance 1 vlan 1
[LSW4-mst-region]instance 2 vlan 2
[LSW4-mst-region]active region-configuration

[LSW3]port-group group-member e0/0/1 to e0/0/2
[LSW3-port-group]stp edged-port enable

[LSW3]int e0/0/3
[LSW3-Ethernet0/0/3]stp instance 0 port priority 16

5.配置ip地址SVI：

[LSW1]int vlan 1
[LSW1-Vlanif1]ip add
[LSW1-Vlanif1]ip address 172.16.1.1 25
[LSW1-Vlanif1]int vlan 2
[LSW1-Vlanif2]ip address 172.16.1.129 25

[LSW1-Vlanif2]display ip interface brief

[LSW2]int vlan 1
[LSW2-Vlanif1]ip address 172.16.1.2 25
[LSW2-Vlanif1]int vlan 2
[LSW2-Vlanif2]ip address 172.16.1.130 25
[LSW2-Vlanif2]display ip interface brief

6.进行网关冗余VRRP：

[LSW1]int vlan 1
[LSW1-Vlanif1]vrrp vrid 1 virtual-ip 172.16.1.126
[LSW1-Vlanif1]vrrp vrid 1 priority 110
[LSW1-Vlanif1]vrrp vrid 1 track interface g0/0/1 reduced 20

[LSW1]int vlan 2
[LSW1-Vlanif2]vrrp vrid 1 virtual-ip 172.16.1.254

[LSW2]int vlan 1
[LSW2-Vlanif1]vrrp vrid 1 virtual-ip 172.16.1.126（vrid、virtual-ip需和LSW1保持一致）

[LSW2]int vlan 2
[LSW2-Vlanif2]vrrp vrid 1 virtual-ip 172.16.1.254
[LSW2-Vlanif2]vrrp vrid 1 priority 110
[LSW2-Vlanif2]vrrp vrid 1 track int g0/0/1 reduced 20

7.配置DHCP获取IP地址：

[LSW1]dhcp enable
[LSW1]ip pool a1
[LSW1-ip-pool-a1]net 172.16.1.0 mask 25
[LSW1-ip-pool-a1]gateway-list 172.16.1.126
[LSW1-ip-pool-a1]dns-list 114.114.114.114
[LSW1-ip-pool-a1]q
[LSW1]ip pool a2
[LSW1-ip-pool-a2]net 172.16.1.128 mask 25
[LSW1-ip-pool-a2]gateway-list 172.16.1.254
[LSW1-ip-pool-a2]dns-list 114.114.114.114
[LSW1-ip-pool-a2]q
[LSW1]int vlan 1
[LSW1-Vlanif1]dhcp select global
[LSW1-Vlanif1]int vlan 2
[LSW1-Vlanif2]dhcp select global

[SW2]dhcp enable
[SW2]ip pool a1
Info:It's successful to create an IP address pool.
[SW2-ip-pool-a1]net 172.16.1.0 mask 25
[SW2-ip-pool-a1]gateway-list 172.16.1.126
[SW2-ip-pool-a1]dns-list 114.114.114.114
[SW2-ip-pool-a1]q
[SW2]ip pool a2
Info:It's successful to create an IP address pool.
[SW2-ip-pool-a2]net 172.16.1.128 mask 25
[SW2-ip-pool-a2]gateway-list 172.16.1.254
[SW2-ip-pool-a2]dns-list 114.114.114.114
[SW2-ip-pool-a2]q
[SW2]int vlan 1
[SW2-Vlanif1]dhcp select global
[SW2-Vlanif1]int vlan 2
[SW2-Vlanif2]dhcp select global

8.对于上层路由器进行连接

[SW1]vlan 99
[SW1-GigabitEthernet0/0/2]int g0/0/1
[SW1-GigabitEthernet0/0/1]port link-type access
[SW1-GigabitEthernet0/0/1]port default vlan 99
[SW1]int vlan 99
[SW1-Vlanif99]ip add 172.16.0.2 30

[SW2]vlan 99
[SW2-vlan99]int g0/0/1
[SW2-GigabitEthernet0/0/1]port link-type access
[SW2-GigabitEthernet0/0/1]q
[SW2]int vlan 99
[SW2-Vlanif99]ip add 172.16.0.6 30

9.配置沉默接口：

[LSW1]ospf 1

[SW1-ospf-1]silent-interface all
[SW1-ospf-1]undo silent-interface GigabitEthernet 0/0/1
[SW1-ospf-1]undo silent-interface Vlanif 99
[SW1-ospf-1]undo silent-interface Eth-Trunk 0
[SW1-ospf-1]undo silent-interface Vlanif 1
[SW2]ospf 1
[SW2-ospf-1]silent-interface all
[SW2-ospf-1]undo silent-interface GigabitEthernet 0/0/1
[SW2-ospf-1]undo silent-interface Vlanif 99
[SW2-ospf-1]undo silent-interface Eth-Trunk 0
[SW2-ospf-1]undo silent-interface Vlanif 1

三、配置路由器部分：

1.配置ospf协议

[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]net 172.16.0.0 0.0.0.255

[SW1]ospf 1 router-id 3.3.3.3

[SW1-ospf-1]area 0
[SW1-ospf-1-area-0.0.0.0]net 172.16.0.2 0.0.0.0
[SW1-ospf-1]area 1
[SW1-ospf-1-area-0.0.0.1]net 172.16.1.0 0.0.0.255
[SW1-ospf-1-area-0.0.0.1]

[SW2]ospf 1 router-id 4.4.4.4
[SW2-ospf-1]area 0
[SW2-ospf-1-area-0.0.0.0]net 172.16.0.6 0.0.0.0
[SW2-ospf-1-area-0.0.0.0]q
[SW2-ospf-1]area 1
[SW2-ospf-1-area-0.0.0.1]net 172.16.1.0 0.0.0.255

2.配置缺省路由

[R2]ip route-static 0.0.0.0 0 12.1.1.1

[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]default-route-advertise

3.进行路由汇总：

[SW1]ospf 1
[SW1-ospf-1]area 1
[SW1-ospf-1-area-0.0.0.1]abr-summary 172.16.1.0 255.255.255.0

[SW2]ospf 1
[SW2-ospf-1]area 1
[SW2-ospf-1-area-0.0.0.1]abr-summary 172.16.1.0 255.255.255.0

4.防止路由黑洞

[SW1]ip route-static 172.16.1.0 24 NULL 0

[SW2]ip route-static 172.16.1.0 24 NULL 0

5.配置nat，进行上网：

[R2]acl 2000
[R2-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[R2-acl-basic-2000]q
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]nat outbound 2000

确定 ISP 连接接口及 IP 配置

明确 R1 与 ISP 相连的接口（假设为 GE 0/0/0 ），在 R1上仅进行 IP 地址相关配置。若已知 ISP 侧 IP 地址为 12.1.1.1 ，则在 R1 设备上配置：

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[R1]interface GE0/0/0
[R1-GigabitEthernet0/0/0]ip address 12.1.1.2 30

此配置仅为接口设置 IP 地址，符合 “只能配置 IP 地址” 的要求。

确保连接及路由可达

链路连通性测试：在 R1 上使用 ping 命令测试与 ISP 的连通性，如 ping 12.1.1.1 ，确保物理链路和 IP 层连通正常。
路由配置：在 R1 及相关网络设备（如 LSW1、LSW2 等）上，通过 OSPF 等动态路由协议（已配置情况下）或静态路由，保证内网到 ISP 方向路由可达。例如在 R1 上，已配置缺省路由 [R1]ip route-static 0.0.0.0 0 12.1.1.1 ，将所有未知流量导向 ISP ；在 LSW1 和 LSW2 上，通过 OSPF 学习到前往 R2 及 ISP 方向的路由。

安全策略限制

为进一步确保 ISP 只能配置 IP 地址，可在 R2 上配置访问控制列表（ACL ），限制对 ISP 设备的其他访问操作（假设 ISP 设备不允许除 IP 配置外的其他远程管理等操作）。例如：

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[R1]acl 3000
[R1-acl-adv-3000]rule deny ip source any destination 12.1.1.1 0.0.0.0 （禁止内网主动访问 ISP 除 IP 相关配置外的其他服务 ）
[R1-acl-adv-3000]rule permit ip source 12.1.1.2 0.0.0.0 destination any （允许 R2 与 ISP 正常通信 ）
[R1-acl-adv-3000]quit
[R1]interface GE0/0/0
[R1-GigabitEthernet0/0/0]traffic-filter inbound acl 3000 （在入方向应用 ACL 策略 ）

通过以上操作，在网络连接和安全控制层面实现 ISP 仅进行 IP 地址配置的要求。

ping 12.1.1.1