實驗目的：為了實現路由器的冗余即備份，當其中一個三層交換機壞了，PC還能正常上網

實驗拓撲：

SW3 配置步驟

思路：創建vlan10 20 30 40 ，01、02、03、04端口分別加入vlan10到40.

05、06端口配置trunk模式允許所有vlan通過

[Huawei]sysname sw1

創建vlan

[sw1]vlan batch 10 20 30 40

加入vlan10

[sw1]inter GigabitEthernet 0/0/1

[sw1-GigabitEthernet0/0/1]port link-type access

[sw1-GigabitEthernet0/0/1]port default vlan 10

加入vlan20

[sw1-GigabitEthernet0/0/1]inter gi 0/0/2

[sw1-GigabitEthernet0/0/2]port link-type access

[sw1-GigabitEthernet0/0/2]port default vlan 20

加入vlan30

[sw1-GigabitEthernet0/0/2]inter gi 0/0/3

[sw1-GigabitEthernet0/0/3]port link-type access

[sw1-GigabitEthernet0/0/3]port default vlan 30

加入vlan40

[sw1-GigabitEthernet0/0/3]inter gi0/0/4

[sw1-GigabitEthernet0/0/4]port link-type access

[sw1-GigabitEthernet0/0/4]port default vlan 40

[sw1-GigabitEthernet0/0/4]q

配置trunk模式

[sw1]inter GigabitEthernet 0/0/6

[sw1-GigabitEthernet0/0/6]port link-type trunk

[sw1-GigabitEthernet0/0/6]port trunk allow-pass vlan all

[sw1]inter gi 0/0/5

[sw1-GigabitEthernet0/0/5]port link-type trunk

[sw1-GigabitEthernet0/0/5]port trunk allow-pass vlan a

配置sw2

<Huawei>sys

創建vlan

[Huawei]vlan batch 10 20 30 40

每個vlan配置ip地址

[Huawei]inter vlan 10

[Huawei-Vlanif10]ip address 192.168.10.253 255.255.255.0

[Huawei-Vlanif10]inter vlan 20

[Huawei-Vlanif20]ip address 192.168.20.253 255.255.255.0

[Huawei-Vlanif20]inter vlan 30

[Huawei-Vlanif30]ip address 192.168.30.253 255.255.255.0

[Huawei-Vlanif30]inter vlan 40

[Huawei-Vlanif40]ip address 192.168.40.253 255.255.255.0

把vlan40加入組，並配置vrrp

vrrp配置虛擬IP

[Huawei-Vlanif40]vrrp vrid 40 virtual-ip 192.168.40.250

配置優先級

[Huawei-Vlanif40]vrrp vrid 40 priority 150

配置 鏈路跟蹤

[Huawei-Vlanif40]vrrp vrid 40 track interface gi0/0/2 reduced 100（如果gi0/0/2端口的狀態變為down，則優先級降低100，變為50）

相同的操作配置vlan30

[Huawei-Vlanif40]inter vlan 30

[Huawei-Vlanif30]vrrp vrid 30 virtual-ip 192.168.30.250

[Huawei-Vlanif30]vrrp vrid 30 priority 100

[Huawei-Vlanif30]vrrp vrid 30 track interface GigabitEthernet 0/0/2 reduced 100

開啟vlan10的vrrp功能

[Huawei-Vlanif30]inter vlan 10

[Huawei-Vlanif10]vrrp vrid 10 virtual-ip 192.168.10.250

開啟vlan20的vrrp功能

[Huawei-Vlanif10]inter vlan 20

[Huawei-Vlanif20]vrrp vrid 20 virtual-ip 192.168.20.250

將gi0/0/1配置為trunk模式

[Huawei-Vlanif20]inter gi0/0/1

[Huawei-GigabitEthernet0/0/1]port link-type trunk

[Huawei-GigabitEthernet0/0/1]port trunk allow-pass vlan all

sw1

配置vlan10 20 的vrrp優先級為150

vlan30 40 開啟vrrp

<Huawei>

<Huawei>sys

[Huawei]vlan batch 10 20 30 40

[Huawei]inter vlan 10

[Huawei-Vlanif10]ip address 192.168.10.254 255.255.255.0

[Huawei-Vlanif10]inter vlan 20

[Huawei-Vlanif20]ip address 192.168.20.254 255.255.255.0

[Huawei-Vlanif20]inter vlan 30

[Huawei-Vlanif30]ip address 192.168.30.254 255.255.255.0

[Huawei-Vlanif30]inter vlan 40

[Huawei-Vlanif40]ip address 192.168.40.254 255.255.255.0

[Huawei-Vlanif40]q

[Huawei]inte gi 0/0/1

[Huawei-GigabitEthernet0/0/1]port link-type trunk

[Huawei-GigabitEthernet0/0/1]port trunk allow-pass vlan all

[Huawei-GigabitEthernet0/0/1]q

[Huawei]inter vlan 10

[Huawei-Vlanif10]vrrp vrid 10 virtual-ip 192.168.10.250

[Huawei-Vlanif10]vrrp vrid 10 priority 150

[Huawei-Vlanif10]vrrp vrid 10 track inter gi 0/0/2 reduced 100

[Huawei-Vlanif10]inter vlan 20

[Huawei-Vlanif20]vrrp vrid 20 virtual-ip 192.168.20.250

[Huawei-Vlanif20]vrrp vrid 20 priority 150

[Huawei-Vlanif20]vrrp vrid 20 track inter gi0/0/2 reduced 100

驗證：實現全網通

開啟 debug

<sw1>terminal monito

<sw1>terminal debugging

<sw1>debugging ip icmp

<sw1>sys

[sw1]info-center console channel monitor

發包

回包看看是哪個三層

華為vrrp配置