1、实验拓扑
Gateway Load Balancing Protocol
AVF(Active virtual forwarder)
所有运行GLBP的路由器,交换机都成为AVF
AVG(Active virtual gateway)
从所有AVF中选取出一个AVG(高优先级,高IP)
GLBP一个虚拟网关IP,多个虚拟MAC(AVG为每台AVF分配一个虚拟MAC地址)
当PC发送ARP Request时,AVG进行响应,回应一个虚拟MAC地址,该虚拟MAC地址可能是AVG本身的虚拟MAC地址,也可能是其中AVF中任一个的虚拟MAC地址。
2、基础配置
R1配置
interface Serial0/0
ip address 12.1.1.1 255.255.255.0
interface Serial0/1
ip address 13.1.1.1 255.255.255.0
interface Serial0/2
ip address 15.1.1.1 255.255.255.0
router ospf 110
router-id 1.1.1.1
log-adjacency-changes
network 12.1.1.0 0.0.0.255 area 0
network 13.1.1.0 0.0.0.255 area 0
network 15.1.1.0 0.0.0.255 area 0
R2配置
interface Serial0/0
ip address 12.1.1.2 255.255.255.0
interface FastEthernet1/0
ip address 100.1.1.2 255.255.255.0
router ospf 110
router-id 2.2.2.2
network 12.1.1.0 0.0.0.255 area 0
network 100.1.1.0 0.0.0.255 area 0
R3配置
interface Serial0/1
ip address 13.1.1.3 255.255.255.0
interface FastEthernet1/0
ip address 100.1.1.3 255.255.255.0
router ospf 110
router-id 3.3.3.3
network 13.1.1.0 0.0.0.255 area 0
network 100.1.1.0 0.0.0.255 area 0
R4配置
no ip routing
interface FastEthernet1/0
ip address 100.1.1.4 255.255.255.0
ip default-gateway 100.1.1.254
R5配置
interface Serial0/2
ip address 15.1.1.5 255.255.255.0
router ospf 110
router-id 5.5.5.5
network 15.1.1.0 0.0.0.255 area 0
R6配置
no ip routing
interface FastEthernet1/0
ip address 100.1.1.6 255.255.255.0
ip default-gateway 100.1.1.254
3、配置GLBP
R2配置
interface FastEthernet1/0
glbp 1 ip 100.1.1.254
R3配置
interface FastEthernet1/0
glbp 1 ip 100.1.1.254
3、测试GLBP
两台不同的PC分别从不同的路由器出去了,证明确实起到了负载均衡。