ospf+lvs+fullnat 配置部署纪要
拓扑图如下::http://s3.运维网.com/wyfs02/M02/6E/17/wKioL1Vz-rHj8hVEAAFeNImiajE214.jpg
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
http://s3.运维网.com/wyfs02/M02/6E/1C/wKiom1Vz_Q-CScWoAAJxgsFSPi0339.jpg
加载镜像完成.
下面配置草C1其他PC的配置类似
http://s3.运维网.com/wyfs02/M00/6E/17/wKioL1V0ALPhaDwvAAKhizNj3-Y209.jpg
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 R2R3
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R1R2 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 via 1.1.1.1, 01:26:44, FastEthernet0/1
3.0.0.0/24 is subnetted, 1 subnets
O 3.3.3.0 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 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 via 2.2.2.2, 01:27:12, FastEthernet0/0
6.0.0.0/24 is subnetted, 1 subnets
O 6.6.6.0 via 1.1.1.2, 01:27:12, FastEthernet0/1
192.168.0.0/32 is subnetted, 1 subnets
O 192.168.0.111 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 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 via 2.2.2.1, 01:25:40, FastEthernet0/0
192.168.0.0/32 is subnetted, 1 subnets
O 192.168.0.111 via 3.3.3.8, 01:25:40, Vlan2
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 quaggakeepalived ipvsadm
LVS1和LVS2上都要安装
配置如下：
http://s3.运维网.com/wyfs02/M01/6E/18/wKioL1V0BjGQllhMAAE3sNLyqYk709.jpg
keepalived的配置：
# 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http://s3.运维网.com/wyfs02/M01/6E/1C/wKiom1V0Cnbi3qm-AAEdPq1Zw44007.jpg
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ping192.168.0.111 重启lvs1 或者LV2VIP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/
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