ospf+lvs+fullnat 配置部署纪要

ewr23

拓扑图如下::



实验需求及目的：
    通过ospf路由自动宣告功能来宣布LVS的VIP地址:192.168.0.111 使C1计算机能够通过网络不间断的访问192.168.0.111提供的WEB 访问服务。
实验结果：
   在C1段的计算机节点ping VIP地址192.168.0.111     重启C2或者C3 这时候发现VIP不会断。

实验工具:
   用gns3来模拟网络，用c7200模拟路由器R1和R2， 用C3600来模拟三层交换r3.
   用VMware虚拟机来实现LVS 的loadblance调度 LVS1和LVS2  
实验配置过程：
GNS3配置
    1.加载镜像,点击edit-->ios IMAGES and hypervisors

加载镜像完成.
下面配置草C1  其他PC的配置类似


注意C1在这里选择本地网卡，C2 C3 一定选择NET8
下面开始配置R1 R2  R3

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R1的配置如下： Router#sh running-config Building configuration... Current configuration : 1062 bytes version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption hostname Router boot-start-marker boot-end-marker no aaa new-model resource policy ip subnet-zero ip cef no ip dhcp use vrf connected no ip ips deny-action ips-interface interface FastEthernet0/0 ip address 6.6.6.2 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 ip address 1.1.1.2 255.255.255.0 duplex auto speed auto ! interface Ethernet1/0 no ip address shutdown duplex half ! interface Ethernet1/1 no ip address shutdown duplex half ! interface Ethernet1/2 no ip address shutdown duplex half ! interface Ethernet1/3 no ip address shutdown duplex half ! router ospf 10 log-adjacency-changes network 1.1.1.0 0.0.0.255 area 0 network 6.6.6.0 0.0.0.255 area 0 ! ip classless no ip http server no ip http secure-server control-plane gatekeeper shutdown line con 0 stopbits 1 line aux 0 line vty 0 4 end R2的配置如下： Router#sh running-config Router#sh running-config Building configuration... Current configuration : 1062 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname Router ! boot-start-marker boot-end-marker ! ! no aaa new-model ! resource policy ! ip subnet-zero ip cef ! ! no ip dhcp use vrf connected ! ! no ip ips deny-action ips-interface interface FastEthernet0/0 ip address 2.2.2.1 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 ip address 1.1.1.1 255.255.255.0 duplex auto speed auto ! interface Ethernet1/0 no ip address shutdown duplex half ! interface Ethernet1/1 no ip address shutdown duplex half ! interface Ethernet1/2 no ip address shutdown duplex half ! interface Ethernet1/3 no ip address shutdown duplex half ! router ospf 10 log-adjacency-changes network 1.1.1.0 0.0.0.255 area 0 network 2.2.2.0 0.0.0.255 area 0 ! ip classless no ip http server no ip http secure-server control-plane gatekeeper shutdown line con 0 stopbits 1 line aux 0 line vty 0 4 ! ! end ######################################################### R3的配置（三层交换的配置） Router#sh running-config Building configuration... Current configuration : 1326 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname Router ! boot-start-marker boot-end-marker no aaa new-model memory-size iomem 5 ip cef ! ! ip auth-proxy max-nodata-conns 3 ip admission max-nodata-conns 3 interface FastEthernet0/0 no switchport ip address 2.2.2.2 255.255.255.0 ! interface FastEthernet0/1 switchport access vlan 2 ! interface FastEthernet0/2 switchport access vlan 2 ! interface FastEthernet0/3 ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan2 ip address 3.3.3.1 255.255.255.0 ! router ospf 10 log-adjacency-changes network 2.2.2.0 0.0.0.255 area 0 network 3.3.3.0 0.0.0.255 area 0 ! no ip http server no ip http secure-server ! ip forward-protocol nd ! ! mac-address-table static cc03.04c0.0000 interface FastEthernet0/2 vlan 1 control-plane line con 0 line aux 0 line vty 0 4 login end 分别查看R1  R2   R3上的路由信息 R1: Router#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP        D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area        N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2        E1 - OSPF external type 1, E2 - OSPF external type 2        i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2        ia - IS-IS inter area, * - candidate default, U - per-user static route        o - ODR, P - periodic downloaded static route Gateway of last resort is not set      1.0.0.0/24 is subnetted, 1 subnets C       1.1.1.0 is directly connected, FastEthernet0/1      2.0.0.0/24 is subnetted, 1 subnets O       2.2.2.0 [110/2] via 1.1.1.1, 01:26:44, FastEthernet0/1      3.0.0.0/24 is subnetted, 1 subnets O       3.3.3.0 [110/3] via 1.1.1.1, 01:26:44, FastEthernet0/1      6.0.0.0/24 is subnetted, 1 subnets C       6.6.6.0 is directly connected, FastEthernet0/0      192.168.0.0/32 is subnetted, 1 subnets O       192.168.0.111 [110/13] via 1.1.1.1, 01:26:44, FastEthernet0/1 R2: Router#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP        D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area        N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2        E1 - OSPF external type 1, E2 - OSPF external type 2        i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2        ia - IS-IS inter area, * - candidate default, U - per-user static route        o - ODR, P - periodic downloaded static route Gateway of last resort is not set      1.0.0.0/24 is subnetted, 1 subnets C       1.1.1.0 is directly connected, FastEthernet0/1      2.0.0.0/24 is subnetted, 1 subnets C       2.2.2.0 is directly connected, FastEthernet0/0      3.0.0.0/24 is subnetted, 1 subnets O       3.3.3.0 [110/2] via 2.2.2.2, 01:27:12, FastEthernet0/0      6.0.0.0/24 is subnetted, 1 subnets O       6.6.6.0 [110/2] via 1.1.1.2, 01:27:12, FastEthernet0/1      192.168.0.0/32 is subnetted, 1 subnets O       192.168.0.111 [110/12] via 2.2.2.2, 01:27:12, FastEthernet0/0 R3: Router#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP        D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area        N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2        E1 - OSPF external type 1, E2 - OSPF external type 2        i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2        ia - IS-IS inter area, * - candidate default, U - per-user static route        o - ODR, P - periodic downloaded static route Gateway of last resort is not set      1.0.0.0/24 is subnetted, 1 subnets O       1.1.1.0 [110/2] via 2.2.2.1, 01:25:40, FastEthernet0/0      2.0.0.0/24 is subnetted, 1 subnets C       2.2.2.0 is directly connected, FastEthernet0/0      3.0.0.0/24 is subnetted, 1 subnets C       3.3.3.0 is directly connected, Vlan2      6.0.0.0/24 is subnetted, 1 subnets O       6.6.6.0 [110/3] via 2.2.2.1, 01:25:40, FastEthernet0/0      192.168.0.0/32 is subnetted, 1 subnets O       192.168.0.111 [110/11] via 3.3.3.8, 01:25:40, Vlan2                       [110/11] via 3.3.3.3, 01:25:42, Vlan2

下面是虚拟机的配置
虚拟机LVS1和2需要两个网卡  1个走NET8模式  一个走桥接模式
虚拟机首先安装quagga 包
yum -y install quagga  keepalived ipvsadm
LVS1和LVS2上都要安装

配置如下：

keepalived的配置：

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[iyunv@lvs-1 ~]# cat  /etc/keepalived/keepalived.conf vrrp_instance VI_2 {     interface eth3     virtual_router_id 11     priority 30     virtual_ipaddress {         192.168.0.111     } } virtual_server 192.168.0.111 80 {     delay_loop 6     lb_algo rr     lb_kind DR     protocol TCP     real_server 192.168.0.109 80 {         weight 10         inhibit_on_failure         TCP_CHECK {         connect_timeout 9         nb_get_retry 3         delay_before_retry 3         connect_port 80         }     } } 查看服务器上LV1或LVS2上的路由配置

最后 在拿一台电脑模仿PC客户端， 配置IP 6.6.6.3  指定网管为6.6.6.2（R1的接口IP）
然后在该机器上ping  192.168.0.111       重启lvs1 或者LV2  VIP也不会断。
达到实验目的！！！

当然在起个虚拟机模仿也是可以的