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生成树和VRRP实验

article 2025/3/31 13:20:05

配置循序：eth-trunk 创建vlan，划分vlan trunK STP SVI VRRP DHCP

1.配置eth-trunk

[SW1]interface Eth-Trunk 0
[SW1-Eth-Trunk0]trunkport g0/0/2
Info: This operation may take a few seconds. Please wait for a moment...done.
[SW1-Eth-Trunk0]trunkport g0/0/3
Info: This operation may take a few seconds. Please wait for a moment...done.

[SW2]interface Eth-Trunk 0
[SW2-Eth-Trunk0]trunkport g0/0/2
Info: This operation may take a few seconds. Please wait for a moment...done.
[SW2-Eth-Trunk0]trunkport g0/0/3
Info: This operation may take a few seconds. Please wait for a moment...done.

2.划分vlan

[SW1]vlan 2
[SW1-vlan2]q
[SW1]port-group group-member GigabitEthernet 0/0/4 GigabitEthernet 0/0/5 Eth-Trunk 0
[SW1-port-group]port link-type trunk
[SW1-port-group]port trunk allow-pass vlan 2
[SW2]vlan 2
[SW2]port-group group-member GigabitEthernet 0/0/4 GigabitEthernet 0/0/5 Eth-Trunk 0
[SW2-port-group]port link-type trunk
[SW2-port-group]port trunk allow-pass vlan 2
[SW3]vlan 2
[SW3]int e0/0/4
[SW3-Ethernet0/0/4]port link-type access
[SW3-Ethernet0/0/4]port default vlan 2
[SW3]port-group group-member e0/0/1 to e0/0/2
[SW3-port-group]port link-type trunk
[SW3-port-group]port trunk allow-pass vlan 2
[SW4]vlan 2
[SW4-vlan2]q
[SW4]int e0/0/4
[SW4-Ethernet0/0/4]port link-type access
[SW4-Ethernet0/0/4]port default vlan 2
[SW4-Ethernet0/0/4]q
[SW4]port-group group-member e0/0/1 to e0/0/2
[SW4-port-group]port link-type trunk
[SW4-port-group]port trunk allow-pass vlan 2

3.配置生成树

[SW1]stp region-configuration
[SW1-mst-region]region-name aa
[SW1-mst-region]instance 1 vlan 1
[SW1-mst-region]instance 2 vlan 2
[SW1-mst-region]active region-configuration

[SW2]stp region-configuration
[SW2-mst-region]region-name aa
[SW2-mst-region]instance 1 vlan 1
[SW2-mst-region]instance 2 vlan 2
[SW2-mst-region]active region-configuration

[SW3]stp region-configuration
[SW3-mst-region]region-name aa
[SW3-mst-region]instance 1 vlan 1
[SW3-mst-region]instance 2 vlan 2
[SW3-mst-region]active region-configuration

[SW4]stp region-configuration
[SW4-mst-region]region-name aa
[SW4-mst-region]instance 1 vlan 1
[SW4-mst-region]instance 2 vlan 2
[SW4-mst-region]active region-configuration

[SW1]stp instance 1 root primary
[SW1]stp instance 2 root secondary
[SW1]stp instance 0 root primary
[SW2]stp instance 1 root secondary
[SW2]stp instance 2 root primary
[SW2]stp instance 0 root secondary

[SW3]port-group group-member Ethernet 0/0/1 to Ethernet 0/0/22
[SW3-port-group]stp edged-port enable

[SW4]port-group group-member e0/0/1 to e0/0/22
[SW4-port-group]stp edged-port enable

4.配置SVI：

[SW1]int Vlanif 1
[SW1-Vlanif1]ip add 172.16.1.1 25
[SW1-Vlanif1]int vlanif 2
[SW1-Vlanif2]ip add 172.16.1.129 25

[SW2]int vlan 1
[SW2-Vlanif1]ip add 172.16.1.2 25
[SW2-Vlanif1]int vlanif 2
[SW2-Vlanif2]ip add 172.16.1.130 25

5.进行网关冗余：

[SW1]int vlanif 1
[SW1-Vlanif1]vrrp vrid 1 virtual-ip 172.16.1.126
[SW1-Vlanif1]vrrp vrid 1 priority 110：对sw1来说vlan1为主根
[SW1-Vlanif1]vrrp vrid 1 track interface g0/0/1 reduced 20

[SW1-Vlanif1]int vlanif 2
[SW1-Vlanif2]vrrp vrid 1 virtual-ip 172.16.1.254

[SW2-Vlanif2]int vlan 1
[SW2-Vlanif1]vrrp vrid 1 virtual-ip 172.16.1.126
[SW2-Vlanif1]int vlanif 2
[SW2-Vlanif2]vrrp vrid 1 virtual-ip 172.16.1.254
[SW2-Vlanif2]vrrp vrid 1 priority 110 ：对sw2来说vlan2为主根
[SW2-Vlanif2]vrrp vrid 1 track int g0/0/1 reduced 20

6.配置DHCP获取IP地址：

[SW1]dhcp enable
[SW1]ip pool aa
Info:It's successful to create an IP address pool.
[SW1-ip-pool-aa]net 172.16.1.0 mask 25
[SW1-ip-pool-aa]gateway-list 172.16.1.126
[SW1-ip-pool-aa]dns-list 114.114.114.114
[SW1-ip-pool-aa]q
[SW1]ip pool bb
Info:It's successful to create an IP address pool.
[SW1-ip-pool-bb]net 172.16.1.128 mask 25
[SW1-ip-pool-bb]gateway-list 172.16.1.254
[SW1-ip-pool-bb]dns-list 114.114.114.114
[SW1-ip-pool-bb]q
[SW1]int vlanif 1
[SW1-Vlanif1]dhcp select global
[SW1-Vlanif1]int vlan 2
[SW1-Vlanif2]dhcp select global

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

7.配置交换机的上层接口：

[SW1]vlan 99
[SW1-vlan99]q
[SW1]int g0/0/1
[SW1-GigabitEthernet0/0/1]port link-type access
[SW1-GigabitEthernet0/0/1]port default vlan 99
[SW1-GigabitEthernet0/0/1]q
[SW1]int vlanif 99
[SW1-Vlanif99]ip add 172.16.0.2 30

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

8.配置沉默接口：避免ospf与其他虚拟配置建立邻居，造成流量浪费
[SW1]ospf 1
[SW1-ospf-1]silent-interface all
[SW1-ospf-1]undo silent-interface GigabitEthernet 0/0/1
[SW1-ospf-1]undo silent-interface Eth-Trunk 0
[SW1-ospf-1]undo silent-interface Vlanif 1

[SW2]ospf 1
[SW2-ospf-1]undo sil
[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 Vlanif 1
[SW2-ospf-1]undo silent-interface Eth-Trunk 0

9.配置ospf

[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 2 router-id 3.3.3.3
[SW1-ospf-2]area 0
[SW1-ospf-2-area-0.0.0.0]net 172.16.0.2 0.0.0.0
[SW1-ospf-2-area-0.0.0.0]area 1
[SW1-ospf-2-area-0.0.0.1]net 172.16.1.0 0.0.0.255

[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]area 1
[SW2-ospf-1-area-0.0.0.1]net 172.16.1.0 0.0.0.255