利用隧道解决OSPF非0分割区域的问题.doc

实验要求： 全网互通 回环口宣告入较小的Area 两部分Area2产生域内路由 实验过程： R1全配置： en conf t no ip do lo li co 0 no exec-t logg s ho R1 int lo0 ip add 11.11.1.1 255.255.255.255 int s2/0 en fr no frame inverse ip add 11.11.11.1 255.255.255.0 frame map ip 11.11.11.2 102 b frame map ip 11.11.11.3 103 b frame map ip 11.11.11.1 102 no sh /基于Hub-and-Spoke的帧中继配置 int s3/0 ip add 11.11.14.1 255.255.255.0 en fr no frame inverse frame map ip 11.11.14.4 114 b frame map ip 11.11.14.1 114 ip ospf net point-to-point no sh router ospf 11 net 11.11.1.1 0.0.0.0 a 0 net 11.11.11.1 0.0.0.0 a 0 net 11.11.14.1 0.0.0.0 a 2 nei 11.11.11.2 nei 11.11.11.3 /NBMA网络需要指定邻居 exit int tunn 0 ip unn s3/0 tunn sour 11.11.11.1 tunn des 11.11.25.5 /在R1上搭建到R5的tunnel，注意源IP与目的IP，在隧道建立后重新计算SPF时相应的路由条目不能发生变动，否则tunnel会翻动 R2全配置： en conf t no ip do lo li co 0 no exec-t logg s ho R2 int lo0 ip add 11.11.2.2 255.255.255.255 int s2/0 en fr ip add 11.11.11.2 255.255.255.0 no frame inverse frame map ip 11.11.11.1 201 b frame map ip 11.11.11.3 201 b frame map ip 11.11.11.2 201 ip ospf p 0 no sh int f0/0 full ip add 11.11.25.2 255.255.255.0 no sh router ospf 11 net 11.11.11.2 0.0.0.0 a 0 net 11.11.2.2 0.0.0.0 a 0 net 11.11.25.2 0.0.0.0 a 5 R3全配置： en conf t no ip do lo li co 0 no exec-t logg s ho R3 int lo0 ip add 11.11.3.3 255.255.255.255 int f0/0 full ip add 11.11.34.3 255.255.255.0 no sh int s2/0 en fr no frame inverse ip add 11.11.11.3 255.255.255.0 frame map ip 11.11.11.1 301 b frame map ip 11.11.11.2 301 b frame map ip 11.11.11.3 301 ip ospf p 0 no sh router ospf 11 net 11.11.11.3 0.0.0.0 a 0 net 11.11.3.3 0.0.0.0 a 0 net 11.11.34.3 0.0.0.0 a 2 R4全配置： en conf t no ip do lo li co 0 no exec-t logg s ho R4 int lo0 ip add 11.11.4.4 255.255.255.255 int f0/0 full ip add 11.11.34.4 255.255.255.0 no sh int s3/0 en fr no frame inverse ip add 11.11.14.4 255.255.255.0 frame map ip 11.11.14.1 411 b frame map ip 11.11.14.4 411 ip ospf net point-to-point no sh router ospf 11 net 11.11.34.4 0.0.0.0 a 2 net 11.11.4.4 0.0.0.0 a 2 net 11.11.14.4 0.0.0.0 a 2 R5全配置： en conf t no ip do lo li co 0 no exec-t logg s ho R5 int lo0 ip add 11.11.5.5 255.255.255.255 int f0/0 full ip add 11.11.25.5 255.255.255.0 no sh int f1/0 full ip add 11.11.55.5 255.255.255.0 no sh router ospf 11 net 11.11.5.5 0.0.0.0 a 2 net 11.11.25.5 0.0.0.0 a 5 net 11.11.55.5 0.0.0.0 a 2 exit int tunn 0 ip unn lo0 tunn sour 11.11.25.5 tunn des 11.11.11.1 /搭建到R1的tunnel，注意源IP与目的IP exit SW1全配置： en conf t no ip do lo li co 0 no exec-t logg s int range f0/2 , f0/5 sw ac vl 25 no sh int range f0/3 - 4 sw ac vl 34 no sh SW2全配置： en conf t no ip do lo li co 0 no exec-t logg s ho SW2 int f0/5 sw ac vl 55 no sh end 测试： R4上show ip route： R4#show 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 11.0.0.0/8 is variably subnetted, 10 subnets, 2 masks O 11.11.5.5/32 110/11176 via 11.11.14.1, 00:14:49, Serial3/0 C 11.11.4.4/32 is directly connected, Loopback0 O IA 11.11.3.3/32 110/2 via 11.11.34.3, 00:14:49, FastEthernet0/0 O IA 11.11.2.2/32 110/66 via 11.11.34.3, 00:14:49, FastEthernet0/0 O IA 11.11.1.1/32 110/65 via 11.11.14.1, 00:14:49, Serial3/0 O IA 11.11.11.0/24 110/65 via 11.11.34.3, 00:14:49, FastEthernet0/0 C 11.11.14.0/24 is directly connected, Serial3/0 O IA 11.11.