set ip next-hop多链路负载均衡.docx

set ip next-hop多链路负载均衡实验目的：R1做为边界路由，通过s1/1、s1/2两个接口链接到远程路由R2。在R1上做路由策略，实现来自vlan10的流量走s1/1接口的链路，vlan20的流量走s1/2接口的链路。实验环境：GNS3 1.0三层交换机 :i86bi-linux-l2-adventerprisek9-15.1a路由器:i86bi-linux-l3-adventerprisek9-15.4.1TPC:vpcs实验步骤：1、配置三层交换机，划分3个vlan，建立对应的vlan网关，并创建默认路由指向 192.168.4.253(R3的e0/0)S3(config)#vlan 10 S3(config-vlan)#name vlan10S3(config-vlan)#vlan 20S3(config-vlan)#name vlan20S3(config-vlan)#vlan 30S3(config-vlan)#name vlan30S3(config-vlan)#exitS3(config)#interface e0/1 S3(config-if)#switchport mode accessS3(config-if)#switchport access vlan 10S3(config-if)#no shS3(config-if)#interface e0/2S3(config-if)#switchport mode accessS3(config-if)#switchport access vlan 20S3(config-if)#no shS3(config-if)#interface e0/3S3(config-if)#switchport mode accessS3(config-if)#switchport access vlan 30S3(config-if)#no shS3(config-if)#exitS3(config)#interface vlan 10 S3(config-if)#ip address 192.168.1.254 255.255.255.0S3(config-if)#no shS3(config-if)#interface vlan 20 S3(config-if)#ip address 192.168.2.254 255.255.255.0S3(config-if)#no shS3(config-if)#interface vlan 30 S3(config-if)#ip address 192.168.3.254 255.2 55.255.0S3(config-if)#no shS3(config-if)#exitS3(config)#S3(config)#interface e0/0S3(config-if)#no switchport S3(config-if)#ip address 192.168.4.254 255.255.255.0S3(config-if)#exitS3(config)#S3(config)#ip route 0.0.0.0 0.0.0.0 192.168.4.253 2、配置路由器。R1、R2通过两根串口线相连，启用OSPF。R1上对192.168.1.0 、192.168.2.0、 192.168.3.0三个网段创建静态路由，指向192.168.4.254 (S3的e 0/0)R1(config)#interface e0/0R1(config-if)#ip address 192.168.4.253 255.255.255.0R1(config-if)#interface s1/1R1(config-if)#ip address 192.168.5.1 255.255.255.0R1(config-if)#clock rate 2000000R1(config-if)#interface s1/2R1(config-if)#ip address 12.1.1.1 255.255.255.0R1(config-if)#clock rate64000R1(config-if)#router ospf 1R1(config-router)#network 192.168.4.0 0.0.0.255 area 0R1(config-router)#network 192.168.5.0 0.0.0.255 area 0R1(config-router)#network 12.1.1.0 0.0.0.255 area 0R1(config-router)#exitR1(config)#ip forward-protocol ndR1(config)#ip route 192.168.1.0 255.255.255.0 192.168.4.254R1(config)#ip route 192.168.2.0 255.255.255.0 192.168.4.254R1(config)#ip route 192.168.3.0 255.255.255.0 192.168.4.254R1(config)#router ospf 1R1(config-router)#redistribute static subnets /重发布静态路由R2(config)#interface e0/0R2(config-if)#ip address 24.1.1.254 255.255.255.0R2(config-if)#interface s1/1R2(config-if)#ip address 192.168.5.254 255.255.255.0R2(config-if)#clock rate2000000R2(config-if)#interface s1/2R2(config-if)#ip address 12.1.1.254 255.255.255.0R2(config-if)#clock rate 64000R2(config-if)#exitR2(config)#R2(config)#router ospf 1R2(config-router)#network 192.168.5.0 0.0.0.255 area 0R2(config-router)#network 12.1.1.0 0.0.0.255 area 0R2(config-router)#network 24.1.1.0 0.0.0.255 area 0R2(config-router)#exit3、验证配置R1#show ip routeGateway of last resort is not set12.0.0.0/8 is variably subnetted, 2 subnets, 2 masksC 12.1.1.0/24 is directly connected, Serial1/2L 12.1.1.1/32 is directly connected, Serial1/224.0.0.0/24 is subnetted, 1 subnetsO 24.1.1.0 110/74 via 192.168.5.254, 02:28:25, Serial1/1110/74 via 12.1.1.254, 02:25:44, Serial1/2S 192.168.1.0/24 1/0 via 192.168.4.254S 192.168.2.0/24 1/0 via 192.168.4.254S 192.168.3.0/24 1/0 via 192.168.4.254192.168.4.0/24 is variably subnetted, 2 subnets, 2 masksC 192.168.4.0/24 is directly connected, Ethernet0/0L 192.168.4.253/32 is directly connected, Ethernet0/0192.168.5.0/24 is variably subnetted, 2 subnets, 2 masksC 192.168.5.0/24 is directly connected, Serial1/1L 192.168.5.1/32 is directly connected, Serial1/1R2#show ip routeCodes: L local, C connected, S static, R RIP, M mobile, B BGPGateway of last resort is not set12.0.0.0/8 is variably subnetted, 2 subnets, 2 masksC 12.1.1.0/24 is directly connected, Serial1/2L 12.1.1.254/32 is directly connected, Serial1/224.0.0.0/8 is variably subnetted, 2 subnets, 2 masksC 24.1.1.0/24 is directly connected, Ethernet0/0L 24.1.1.254/32 is directly connected, Ethernet0/0O 192.168.4.0/24 110/74 via 192.168.5.1, 00:04:35, Serial1/1110/74 via 12.1.1.1, 00:01:55, Serial1/2192.168.5.0/24 is variably subnetted, 2 subnets, 2 masksC 192.168.5.0/24 is directly connected, Serial1/1L 192.168.5.254/32 is directly connected, Serial1/14、配置VPCSPC1 ip 192.168.1.1 /24 192.168.1.254Checking for duplicate addressPC1 : 192.168.1.1 255.255.255.0 gateway 192.168.1.254PC2PC2 ip 192.168.2.2 /24 192.168.2.254Checking for duplicate addressPC2 : 192.168.2.2 255.255.255.0 gateway 192.168.2.254PC3PC3 ip 192.168.3.3 /24 192.168.3.254Checking for duplicate addressPC3 : 192.168.3.3 255.255.255.0 gateway 192.168.3.254PC4PC4 ip 24.1.1.4 /24 24.1.1.254Checking for duplicate addressPC4 : 24.1.1.4 255.255.255.0 gateway 24.1.1.2545、连通性测试PC1 tracer 24.1.1.4trace to 24.1.1.4, 8 hops max, press Ctrl+C to stop1 192.168.1.254 1.000 ms 0.000 ms 0.000 ms2 192.168.4.253 1.000 ms 1.000 ms 1.000 ms3192.168.5.254 10.001 ms 10.001 ms 10.000 ms4 *24.1.1.4 11.001 ms (ICMP type:3, code:3, Destination port unreachable)PC2 tracer 24.1.1.4trace to 24.1.1.4, 8 hops max, press Ctrl+C to stop1 192.168.2.254 1.000 ms 1.001 ms 0.000 ms2 192.168.4.253 1.000 ms 1.000 ms 1.000 ms3192.168.5.25410.001 ms 10.000 ms 10.001 ms4 *24.1.1.4 10.000 ms (ICMP type:3, code:3, Destination port unreachable)PC3 tracer 24.1.1.4trace to 24.1.1.4, 8 hops max, press Ctrl+C to stop1 192.168.3.254 0.000 ms 0.000 ms 0.000 ms2 192.168.4.253 0.000 ms 0.000 ms 0.000 ms312.1.1.254 10.001 ms 10.001 ms 10.000 ms4 *24.1.1.4 10.001 ms (ICMP type:3, code:3, Destination port unreachable)6、配置策略路由R1(config)#access-list 1 permit 192.168.1.0 0.0.0.255 /配置ACL，抓取来自192.168.1.0的流量R1(config)#access-list 2 permit 192.168.2.0 0.0.0.255 /配置ACL，抓取来自192.168.2.0的流量R1(config)#R1(config)#route-map bearmr permit 10 /建立路由策略，序列10R1(config-route-map)#match ip address 1 /匹配ACL 1R1(config-route-map)#set ip next-hop 192.168.5.254 /设置下一跳，即来自192.168.1.0的流量走s1/1线路R1(config-route-map)#exitR1(config)#route-map bearmr permit 20 /建立路由策略，序列20R1(config-route-map)#match ip address 2 /匹配ACL 2R1(config-route-map)#set ip next-hop 12.1.1.254 /设置下一跳，即来自192.168.2.0的流量走s1/2线路R1(config-route-map)#exitR1(config)#interface e0/0R1(config-if)#ip policy route-map bearmr /将策略bearmr应用到e0/0接口7、测试结果PC1 tracer 24.1.1.4trace to 24.1.1.4, 8 hops max, press Ctrl+C to stop1 192.168.1.254 0.000 ms 1.000 ms 0.000 ms2 192.168.4.253 1.000 ms 1.000 ms 0.000 ms3192.168.5.254 10.001 ms 10.000 ms 10.001 ms/来自192.168.1.0的流量走192.168.5.254接口4 *24.1.1.4 8.000 ms (ICMP type:3, code:3, Destination port unreachable)PC2 tracer 24.1.1.4trace to 24.1.1.4, 8 hops max, press Ctrl+C to stop1 192.168.2.254 0.000 ms 0.000 ms 0.000 ms2 192.168.4.253 1.000 ms 1.000 ms 1.000 ms312.1.1.25410.000 ms 11.000 ms 10.001 ms/来自192.168.2.0的流量走12.1.1.254接口4 *24.1.1.4 10.000 ms (ICMP type:3, code:3, Destination port unreachable)PC3 tracer 24.1.1.4trace to 24.1.1.4, 8 hops max, press Ctrl+C to stop1 192.168.3.254 1.000 ms 0.000 ms 0.000 ms2 192.168.4.253 1.000 ms 1.000 ms 1.001 ms312.1.1.254 10.000 ms 11.001 ms 10.000 ms/没有配置策略，出口无变化4 *24.1.1.4 7.001 ms (ICMP type:3, code:3, Destination port unreachable)8、断开s1/2链路R2(config)#interface s1/2R2(config-if)#shutdownPC1 tracer 24.1.1.4trace to 24.1.1.4, 8 h