实验要求:
- R4为ISP,其上只能配置IP地址;R4与其它所有直接设备间使用公有IP;R3—R5/6/7为MGRE环境,R3为中心站点;整个OSPF环境IP地址为172.168.0.0/16;所有设备均可访问R4的环回;减少LSA的更新量,加快收敛,保障更新安全;全网可达;
IP地址规划:
area1:
172.16.32.0/21
172.16.40.0/21
172.16.48.0/21
172.16.56.0/21
area 0:
172.16.64.0/21
172.16.72.0/21
172.16.80.0/21
172.16.88.0/21
area 2
172.16.96.0/21
172.16.104.0/21
172.16.112.0/21
area 3:
172.16.128.0/21
172.16.136.0/21
172.16.144.0/21
area 4:
172.16.160.0/21
172.16.168.0/21
172.16.176.0/21
eigrp :
172.16.192.0/20
172.16.208.0/20
配置MGRE环境(R3为中心站点):
R3:
R5:
R6:
R7:
在R3、R5、R6、R7上写一条缺省路由指向外网ISP
基本配置:
R1: interface GigabitEthernet0/0/0 ip address 172.16.64.1 255.255.248.0 interface LoopBack0 ip address 17.16.72.1 255.255.248.0 R2: interface GigabitEthernet0/0/0 ip address 172.16.64.2 255.255.248.0 interface LoopBack0 ip address 172.16.80.1 255.255.248.0 R3: interface Serial3/0/0 ip address 34.1.1.1 255.255.255.0 interface GigabitEthernet0/0/1 ip address 172.16.64.3 255.255.248.0 interface LoopBack0 ip address 172.16.88.1 255.255.248.0 ip route-static 0.0.0.0 0.0.0.0 34.1.1.2 R4: interface Serial3/0/0 ip address 34.1.1.2 255.255.255.0 interface Serial3/0/1 ip address 45.1.1.2 255.255.255.0 interface Serial4/0/0 ip address 46.1.1.2 255.255.255.0 interface Serial4/0/1 ip address 47.1.1.2 255.255.255.0 interface LoopBack0 ip address 4.4.4.4 255.255.255.0 R5: interface Serial3/0/1 ip address 45.1.1.1 255.255.255.0 interface LoopBack0 ip address 172.16.40.1 255.255.248.0 ip route-static 0.0.0.0 0.0.0.0 45.1.1.2 R6: interface Serial4/0/0 ip address 46.1.1.1 255.255.255.0 interface Serial4/0/1 ip address 172.16.96.1 255.255.248.0 interface LoopBack0 ip address 172.16.48.1 255.255.248.0 ip route-static 0.0.0.0 0.0.0.0 46.1.1.2 R7: interface Serial4/0/0 ip address 172.16.128.1 255.255.248.0 interface Serial4/0/1 ip address 47.1.1.1 255.255.255.0 interface LoopBack0 ip address 172.16.56.1 255.255.248.0 ip route-static 0.0.0.0 0.0.0.0 47.1.1.2 R8: interface Serial4/0/0 ip address 172.16.128.2 255.255.248.0 interface Serial4/0/1 ip address 172.16.136.1 255.255.248.0 interface LoopBack0 ip address 172.16.144.1 255.255.248.0 R9: interface Serial4/0/0 ip address 172.16.160.1 255.255.248.0 interface Serial4/0/1 ip address 172.16.136.2 255.255.248.0 interface LoopBack0 ip address 172.16.168.1 255.255.248.0 R10: interface Serial4/0/0 ip address 172.16.160.2 255.255.248.0 interface LoopBack0 ip address 172.16.176.1 255.255.248.0 R11: interface Serial4/0/0 ip address 172.16.104.1 255.255.248.0 interface Serial4/0/1 ip address 172.16.96.2 255.255.248.0 interface LoopBack0 ip address 172.16.112.1 255.255.248.0 R12: interface Serial4/0/0 ip address 172.16.104.2 255.255.248.0
OSPF的配置:
R1: ospf 1 router-id 1.1.1.1 area 0.0.0.1 network 172.16.0.0 0.0.255.255 R2: ospf 1 router-id 2.2.2.2 area 0.0.0.1 network 172.16.0.0 0.0.255.255 R3: ospf 1 router-id 3.3.3.3 area 0.0.0.0 network 172.16.32.1 0.0.0.0 area 0.0.0.1 network 172.16.64.3 0.0.0.0 network 172.16.88.1 0.0.0.0 R5: ospf 1 router-id 5.5.5.5 area 0.0.0.0 network 172.16.0.0 0.0.255.255 R6: ospf 1 router-id 6.6.6.6 area 0.0.0.0 network 172.16.32.3 0.0.0.0 network 172.16.48.1 0.0.0.0 area 0.0.0.2 network 172.16.96.1 0.0.0.0 R7: ospf 1 router-id 7.7.7.7 area 0.0.0.0 network 172.16.32.4 0.0.0.0 network 172.16.56.1 0.0.0.0 area 0.0.0.3 network 172.16.128.1 0.0.0.0 R8: ospf 1 router-id 8.8.8.8 area 0.0.0.3 network 172.16.0.0 0.0.255.255 R9: ospf 1 router-id 9.9.9.9 import-route ospf 2 area 0.0.0.3 network 172.16.136.2 0.0.0.0 ospf 2 router-id 9.9.9.9 import-route ospf 1 area 0.0.0.4 network 172.16.160.1 0.0.0.0 network 172.16.168.1 0.0.0.0 R10: ospf 2 router-id 10.10.10.10 area 0.0.0.4 network 172.16.0.0 0.0.255.255 R11: ospf 1 router-id 11.11.11.11 area 0.0.0.2 network 172.16.0.0 0.0.255.255 R12: ospf 1 router-id 12.12.12.12 import-route rip 1 area 0.0.0.2 network 172.16.104.2 0.0.0.0
不规则区域area4
方法:采用OSPF多进程重发布的方式解决重发布问题
R9: ospf 1 router-id 9.9.9.9 import-route ospf 2 area 0.0.0.3 network 172.16.136.2 0.0.0.0 ospf 2 router-id 9.9.9.9 asbr-summary 172.16.160.0 255.255.224.0 import-route ospf 1 area 0.0.0.4 network 172.16.160.1 0.0.0.0 network 172.16.168.1 0.0.0.0 R10: ospf 2 router-id 10.10.10.10 area 0.0.0.4 network 172.16.0.0 0.0.255.255
R12:
RIP配置
R12: rip 1 version 2 network 172.16.0.0
在R12上实现路由过滤
asbr-summary 172.16.160.0 255.255.224.0 not-advertise路由汇总
- area1的汇总
R3: area 0.0.0.1 abr-summary 172.16.32.0 255.255.224.0
2.area2的汇总
R6: area 0.0.0.2 abr-summary 172.16.96.0 255.255.224.0
- area3的汇总
R7: area 0.0.0.3 abr-summary 172.16.128.0 255.255.224.0
域外路由汇总
1、OSPF2进程汇总
R9: ospf 2 asbr-summary 172.16.160.0 255.255.224.0
2、RIP的汇总
R12: ospf 1 router-id 12.12.12.12 asbr-summary 172.16.208.0 255.255.240.0 not-advertise asbr-summary 172.16.192.0 255.255.240.0 not-advertise
特殊区域
1、area1的完全末梢区域
R1: ospf 1 area 1 stub R2: ospf 1 area 1 stub R3: ospf 1 area 1 stub no-summary
2、area2、area3的完全NSSA
AREA2: R6: ospf 1 area 2 nssa no-summary R11: ospf 1 area 2 nssa R12: ospf 1 area 2 nssa AREA3: R7: ospf 1 area 3 nssa no-summary R8: ospf 1 area 3 nssa R9: ospf 1 area 3 nssa
NAT配置
R3: acl 2000 rule 5 permit source 172.16.0.0 0.0.255.255 int s3/0/0 nat outbound 2000 R6: acl 2000 rule 5 permit source 172.16.0.0 0.0.255.255 int s4/0/0 nat outbound 2000 R7: acl 2000 rule 5 permit source 172.16.0.0 0.0.255.255 int s4/0/1 nat outbound 2000



