ospf+lvs+fullnat 配置部署纪要

懂ni

　　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
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：
[root@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

　　

　　

　　GNS3 OSPF路由配置参考
　　http://www.bearmr.com/index.php/l3/