HCIE第七天总结
OSPF架构设计
实验要求：①该拓扑里面R1和R4分别有业务、办公两个部门
②业务部门的流量走左边的链路，经过r2，办公流量做右边链路，要去其中一条链路出现问题，需要做到备份，可以及时切换换链路
拓扑图：解决Ospf链路备份的方法有三种
第一种方法：虚链路
解析过程：
规划两个OSPF区域，左边的为area 0,右边的为area 1
如果r1和r2之间的链路发生故障，则会影响到左边area 0业务部流量无法通信，所以在r1和r4上面创建一个虚链路，直接将r1和r4进行连接这样就解决了在链路断裂情况下备份的效果。
命令：进ospf区域操作
vlink-peer 4.4.4.4
vlink-peer 1.1.1.1
第二种方法：重发布 通过路由策略来决定选路
启动OSPF多进程，在上面area 0建立ospf 1进程，下面建立ospf 2进程，然后在两个边界路由器上面进行路由的双向重发布，进行路由策略，先抓取感兴趣流量，然后在ospf里面启用router-police联合使用，最后设定两个不同链路的cost值。
命令：[r2]ip ip-prefix 100 index 10 permit 10.100.0.0 16 greater-equal 17 less-equal 32
[r2]route-policy k permit node 10
[r2-route-policy]if-match ip-prefix 100
[r2-route-policy]apply cost 100
[r2-ospf-1]import-route ospf 2 route-policy k
第三种方法：最长匹配
在r2路由器ospf 1 进程里面做area 0的汇总
在r3路由器ospf 1 进程里面做area 0的汇总
做区域的汇总，在r2和r3路由器上面，利用明细汇总优于汇总路由条目来满足实验的需求。
命令：[r2-ospf-area-0.0.0.0]abr-summary 10.0.0.0 255.255.0.0
[r2-ospf-area-0.0.0.1]abr-summary 10.200.0.0 255.255.0.0
[r3-ospf-area-0.0.0.1]abr-summary 10.100.0.0 255.255.0.0
[r3-ospf-area-0.0.0.0]abr-summary 10.0.0.0 255.255.0.0
OSPF分流实验
实验要求：
使用OSPF协议（划分区域，开销值）实现办公与业务路由分离R1路由器配置：
interface Ethernet0/0/0.1
dot1q termination vid 1
ip address 10.1.12.1 255.255.255.0
ospf cost 1
arp broadcast enable
interface Ethernet0/0/0.2
dot1q termination vid 2
ip address 10.2.12.1 255.255.255.0
ospf cost 1
arp broadcast enable
interface Ethernet0/0/1
ip address 10.1.13.1 255.255.255.0
ospf cost 1
interface GigabitEthernet0/0/0.1
dot1q termination vid 1
ip address 10.1.14.1 255.255.255.0
ospf cost 3
arp broadcast enable
interface GigabitEthernet0/0/0.2
dot1q termination vid 2
ip address 10.2.14.1 255.255.255.0
ospf cost 1
arp broadcast enable
interface GigabitEthernet0/0/1
ip address 10.100.1.1 255.255.255.0
interface GigabitEthernet0/0/2
ip address 10.200.1.1 255.255.255.0
ospf 1 router-id 1.1.1.1
area 0.0.0.1
network 10.100.0.0 0.0.255.255
network 10.1.12.0 0.0.0.255
network 10.1.14.0 0.0.0.255
network 10.1.13.0 0.0.0.255
area 0.0.0.2
network 10.200.0.0 0.0.255.255
network 10.2.12.0 0.0.0.255
network 10.2.14.0 0.0.0.255
R2路由器配置：
interface Ethernet0/0/0.1
dot1q termination vid 1
ip address 10.1.12.2 255.255.255.0
ospf cost 1
arp broadcast enable
interface Ethernet0/0/0.2
dot1q termination vid 2
ip address 10.2.12.2 255.255.255.0
ospf cost 1
arp broadcast enable
interface Ethernet0/0/1
ip address 10.1.24.1 255.255.255.0
ospf cost 1
interface GigabitEthernet0/0/0
ip address 10.100.2.1 255.255.255.0
interface GigabitEthernet0/0/1
interface GigabitEthernet0/0/1.1
dot1q termination vid 1
ip address 10.1.23.1 255.255.255.0
ospf cost 1
arp broadcast enable
interface GigabitEthernet0/0/1.2
dot1q termination vid 2
ip address 10.2.23.1 255.255.255.0
ospf cost 3
arp broadcast enable
interface GigabitEthernet0/0/2
ip address 10.200.2.1 255.255.255.0
ospf 1 router-id 2.2.2.2
area 0.0.0.1
network 10.100.0.0 0.0.255.255
network 10.1.12.0 0.0.0.255
network 10.1.23.0 0.0.0.255
area 0.0.0.2
network 10.200.0.0 0.0.255.255
network 10.2.12.0 0.0.0.255
network 10.2.23.0 0.0.0.255
network 10.2.24.0 0.0.0.255
network 10.1.24.0 0.0.0.255
R3路由器配置：
interface Ethernet0/0/0
ip address 10.1.34.1 255.255.255.0
ospf cost 10
interface Ethernet0/0/1
ip address 10.1.13.2 255.255.255.0
interface GigabitEthernet0/0/1.1
dot1q termination vid 1
ip address 10.1.23.2 255.255.255.0
ospf cost 1
arp broadcast enable
interface GigabitEthernet0/0/1.2
dot1q termination vid 2
ip address 10.2.23.2 255.255.255.0
ospf cost 3
arp broadcast enable
interface GigabitEthernet0/0/2
interface GigabitEthernet0/0/2.1
dot1q termination vid 1
ip address 10.1.35.1 255.255.255.0
ospf cost 1
arp broadcast enable
interface GigabitEthernet0/0/2.2
dot1q termination vid 2
ip address 10.2.35.1 255.255.255.0
ospf cost 3
arp broadcast enable
ospf 1 router-id 3.3.3.3
area 0.0.0.0
network 10.1.34.0 0.0.0.255
area 0.0.0.1
network 10.1.23.0 0.0.0.255
network 10.1.13.0 0.0.0.255
area 0.0.0.2
network 10.2.23.0 0.0.0.255
area 0.0.0.3
network 10.1.35.0 0.0.0.255
area 0.0.0.4
network 10.2.35.0 0.0.0.255
R4路由器配置：
interface Ethernet0/0/0
ip address 10.1.34.2 255.255.255.0
ospf cost 10
interface Ethernet0/0/1
ip address 10.1.24.2 255.255.255.0
ospf cost 1
interface GigabitEthernet0/0/0.1
dot1q termination vid 1
ip address 10.1.14.2 255.255.255.0
ospf cost 3
arp broadcast enable
interface GigabitEthernet0/0/0.2
dot1q termination vid 2
ip address 10.2.14.2 255.255.255.0
arp broadcast enable
interface GigabitEthernet0/0/1.1
dot1q termination vid 1
ip address 10.1.45.1 255.255.255.0
ospf cost 3
arp broadcast enable
interface GigabitEthernet0/0/1.2
dot1q termination vid 2
ip address 10.2.45.1 255.255.255.0
ospf cost 1
arp broadcast enable
ospf 1 router-id 4.4.4.4
area 0.0.0.0
network 10.1.34.0 0.0.0.255
area 0.0.0.1
network 10.1.14.0 0.0.0.255
area 0.0.0.2
filter ip-prefix 100 import
network 10.2.14.0 0.0.0.255
network 10.1.24.0 0.0.0.255
area 0.0.0.3
network 10.1.45.0 0.0.0.255
area 0.0.0.4
filter ip-prefix 100 import
network 10.2.45.0 0.0.0.255
ip ip-prefix 100 index 10 deny 10.100.0.0 16 greater-equal 17 less-equal 32
ip ip-prefix 100 index 20 permit 0.0.0.0 0 less-equal 32
R5路由器配置：
interface Ethernet0/0/0
ip address 10.100.3.1 255.255.255.0
interface Ethernet0/0/1
ip address 10.200.3.1 255.255.255.0
interface GigabitEthernet0/0/1.1
dot1q termination vid 1
ip address 10.1.45.2 255.255.255.0
ospf cost 3
arp broadcast enable
interface GigabitEthernet0/0/1.2
dot1q termination vid 2
ip address 10.2.45.2 255.255.255.0
ospf cost 1
arp broadcast enable
interface GigabitEthernet0/0/2
interface GigabitEthernet0/0/2.1
dot1q termination vid 1
ip address 10.1.35.2 255.255.255.0
ospf cost 1
arp broadcast enable
interface GigabitEthernet0/0/2.2
dot1q termination vid 2
ip address 10.2.35.2 255.255.255.0
ospf cost 3
arp broadcast enable
ospf 1 router-id 5.5.5.5
area 0.0.0.3
network 10.1.35.0 0.0.0.255
network 10.1.45.0 0.0.0.255
network 10.100.0.0 0.0.255.255
area 0.0.0.4
network 10.2.35.0 0.0.0.255
network 10.2.45.0 0.0.0.255
network 10.200.0.0 0.0.255.255