ospf与rip重分布引起地问题.docx
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ospf与rip重分布引起地问题
将ospf与rip相互引入。
由于华为的ospf内部路由优先级为10,外部引入路由优先级为150。
RIP的优先级为100。
所以RIP的路由优先级比ospf的外部引入的小,故RIP路由优先于ospf外部路由。
刚构建的拓扑,并不存在环路和次优路径,当ar2上的接口出现down的现象后,才会出现次优路径或者环路现象
dispiprouting-table
RouteFlags:
R-relay,D-downloadtofib
------------------------------------------------------------------------------
RoutingTables:
Public
Destinations:
18Routes:
18
Destination/MaskProtoPreCostFlagsNextHopInterface
10.1.12.0/24OSPF102D10.1.24.2GigabitEthernet0/0/0
10.1.23.0/24OSPF102D10.1.24.2GigabitEthernet0/0/0
10.1.24.0/24Direct00D10.1.24.4GigabitEthernet0/0/0
10.1.24.4/32Direct00D127.0.0.1GigabitEthernet0/0/0
10.1.24.255/32Direct00D127.0.0.1GigabitEthernet0/0/0
22.1.1.1/32OSPF101D10.1.24.2GigabitEthernet0/0/0
33.1.1.1/32OSPF102D10.1.24.2GigabitEthernet0/0/0
44.1.1.1/32Direct00D127.0.0.1LoopBack0
127.0.0.0/8Direct00D127.0.0.1InLoopBack0
127.0.0.1/32Direct00D127.0.0.1InLoopBack0
127.255.255.255/32Direct00D127.0.0.1InLoopBack0
172.16.0.0/24O_ASE1501D10.1.24.2GigabitEthernet0/0/0
172.16.2.0/24O_ASE1501D10.1.24.2GigabitEthernet0/0/0
192.168.35.0/24O_ASE1501D10.1.24.2GigabitEthernet0/0/0
192.168.45.0/24Direct00D192.168.45.4GigabitEthernet0/0/1
192.168.45.4/32Direct00D127.0.0.1GigabitEthernet0/0/1
192.168.45.255/32Direct00D127.0.0.1GigabitEthernet0/0/1
255.255.255.255/32Direct00D127.0.0.1InLoopBack0
[ar3]dispiprouting-table
RouteFlags:
R-relay,D-downloadtofib
------------------------------------------------------------------------------
RoutingTables:
Public
Destinations:
18Routes:
18
Destination/MaskProtoPreCostFlagsNextHopInterface
10.1.12.0/24OSPF102D10.1.23.2GigabitEthernet0/0/0
10.1.23.0/24Direct00D10.1.23.3GigabitEthernet0/0/0
10.1.23.3/32Direct00D127.0.0.1GigabitEthernet0/0/0
10.1.23.255/32Direct00D127.0.0.1GigabitEthernet0/0/0
10.1.24.0/24OSPF102D10.1.23.2GigabitEthernet0/0/0
22.1.1.1/32OSPF101D10.1.23.2GigabitEthernet0/0/0
33.1.1.1/32Direct00D127.0.0.1LoopBack0
44.1.1.1/32OSPF102D10.1.23.2GigabitEthernet0/0/0
127.0.0.0/8Direct00D127.0.0.1InLoopBack0
127.0.0.1/32Direct00D127.0.0.1InLoopBack0
127.255.255.255/32Direct00D127.0.0.1InLoopBack0
172.16.0.0/24O_ASE1501D10.1.23.2GigabitEthernet0/0/0
172.16.2.0/24O_ASE1501D10.1.23.2GigabitEthernet0/0/0
192.168.35.0/24Direct00D192.168.35.3GigabitEthernet0/0/1
192.168.35.3/32Direct00D127.0.0.1GigabitEthernet0/0/1
192.168.35.255/32Direct00D127.0.0.1GigabitEthernet0/0/1
192.168.45.0/24O_ASE1501D10.1.23.2GigabitEthernet0/0/0
255.255.255.255/32Direct00D127.0.0.1InLoopBack0
当ar3与ar2的邻居状态出现震荡后
ar3收到172.16.0.0/24和172.16.2.0/24的路由会由于ospf的震荡导致邻居关系重新建立,LSA重新交互。
同时由于RIP并没有断开,同时因为rip的路由优先级比ospf的外部路由要低,所以ar3的172.16.0.0/24和172.16.2.0/24两个路由浮现的协议为RIP。
导致次优路径的产生。
Ar4因为没有产生震荡所以路由表没有改变。
Ar4和ar2之间链路状态出现变化同样道理。
dispiprouting-table
RouteFlags:
R-relay,D-downloadtofib
------------------------------------------------------------------------------
RoutingTables:
Public
Destinations:
22Routes:
22
Destination/MaskProtoPreCostFlagsNextHopInterface
10.1.12.0/24OSPF102D10.1.23.2GigabitEthernet0/0/0
10.1.23.0/24Direct00D10.1.23.3GigabitEthernet0/0/0
10.1.23.3/32Direct00D127.0.0.1GigabitEthernet0/0/0
10.1.23.255/32Direct00D127.0.0.1GigabitEthernet0/0/0
10.1.24.0/24OSPF102D10.1.23.2GigabitEthernet0/0/0
22.1.1.1/32OSPF101D10.1.23.2GigabitEthernet0/0/0
33.1.1.1/32Direct00D127.0.0.1LoopBack0
44.1.1.1/32OSPF102D10.1.23.2GigabitEthernet0/0/0
55.1.1.1/32RIP1001D192.168.35.5GigabitEthernet0/0/1
127.0.0.0/8Direct00D127.0.0.1InLoopBack0
127.0.0.1/32Direct00D127.0.0.1InLoopBack0
127.255.255.255/32Direct00D127.0.0.1InLoopBack0
172.16.0.0/24RIP1002D192.168.35.5GigabitEthernet0/0/1
172.16.2.0/24RIP1002D192.168.35.5GigabitEthernet0/0/1
192.168.35.0/24Direct00D192.168.35.3GigabitEthernet0/0/1
192.168.35.3/32Direct00D127.0.0.1GigabitEthernet0/0/1
192.168.35.255/32Direct00D127.0.0.1GigabitEthernet0/0/1
192.168.45.0/24RIP1001D192.168.35.5GigabitEthernet0/0/1
255.255.255.255/32Direct00D127.0.0.1InLoopBack0
dispiprouting-table
RouteFlags:
R-relay,D-downloadtofib
------------------------------------------------------------------------------
RoutingTables:
Public
Destinations:
22Routes:
22
Destination/MaskProtoPreCostFlagsNextHopInterface
10.1.12.0/24OSPF102D10.1.24.2GigabitEthernet0/0/0
10.1.23.0/24OSPF102D10.1.24.2GigabitEthernet0/0/0
10.1.24.0/24Direct00D10.1.24.4GigabitEthernet0/0/0
10.1.24.4/32Direct00D127.0.0.1GigabitEthernet0/0/0
10.1.24.255/32Direct00D127.0.0.1GigabitEthernet0/0/0
22.1.1.1/32OSPF101D10.1.24.2GigabitEthernet0/0/0
33.1.1.1/32OSPF102D10.1.24.2GigabitEthernet0/0/0
44.1.1.1/32Direct00D127.0.0.1LoopBack0
55.1.1.1/32RIP1001D192.168.45.5GigabitEthernet0/0/1
127.0.0.0/8Direct00D127.0.0.1InLoopBack0
127.0.0.1/32Direct00D127.0.0.1InLoopBack0
127.255.255.255/32Direct00D127.0.0.1InLoopBack0
172.16.0.0/24O_ASE1501D10.1.24.2GigabitEthernet0/0/0
172.16.2.0/24O_ASE1501D10.1.24.2GigabitEthernet0/0/0
192.168.35.0/24RIP1001D192.168.45.5GigabitEthernet0/0/1
192.168.45.0/24Direct00D192.168.45.4GigabitEthernet0/0/1
192.168.45.4/32Direct00D127.0.0.1GigabitEthernet0/0/1
192.168.45.255/32Direct00D127.0.0.1GigabitEthernet0/0/1
255.255.255.255/32Direct00D127.0.0.1InLoopBack0
[ar2-GigabitEthernet0/0/0]dispiprouting-table
RouteFlags:
R-relay,D-downloadtofib
------------------------------------------------------------------------------
RoutingTables:
Public
Destinations:
27Routes:
31
Destination/MaskProtoPreCostFlagsNextHopInterface
10.0.0.0/24O_ASE1501D10.1.24.4GigabitEthernet2/0/0
10.0.1.0/24O_ASE1501D10.1.24.4GigabitEthernet2/0/0
10.0.2.0/24O_ASE1501D10.1.23.3GigabitEthernet0/0/1
O_ASE1501D10.1.24.4GigabitEthernet2/0/0
10.1.12.0/24Direct00D10.1.12.2GigabitEthernet0/0/0
10.1.12.2/32Direct00D127.0.0.1GigabitEthernet0/0/0
10.1.12.255/32Direct00D127.0.0.1GigabitEthernet0/0/0
10.1.23.0/24Direct00D10.1.23.2GigabitEthernet0/0/1
10.1.23.2/32Direct00D127.0.0.1GigabitEthernet0/0/1
10.1.23.255/32Direct00D127.0.0.1GigabitEthernet0/0/1
10.1.24.0/24Direct00D10.1.24.2GigabitEthernet2/0/0
10.1.24.2/32Direct00D127.0.0.1GigabitEthernet2/0/0
10.1.24.255/32Direct00D127.0.0.1GigabitEthernet2/0/0
22.1.1.1/32Direct00D127.0.0.1LoopBack0
33.1.1.1/32OSPF101D10.1.23.3GigabitEthernet0/0/1
44.1.1.1/32OSPF101D10.1.24.4GigabitEthernet2/0/0
55.1.1.1/32O_ASE1501D10.1.24.4GigabitEthernet2/0/0
O_ASE1501D10.1.23.3GigabitEthernet0/0/1
127.0.0.0/8Direct00D127.0.0.1InLoopBack0
127.0.0.1/32Direct00D127.0.0.1InLoopBack0
127.255.255.255/32Direct00D127.0.0.1InLoopBack0
172.16.0.0/24Static600RD10.1.12.1GigabitEthernet0/0/0
172.16.1.0/24Static600RD10.1.12.1GigabitEthernet0/0/0
172.16.2.0/24Static600RD10.1.12.1GigabitEthernet0/0/0
172.16.3.0/24Static600RD10.1.12.1GigabitEthernet0/0/0
172.16.4.0/24Static600RD10.1.12.1GigabitEthernet0/0/0
192.168.35.0/24O_ASE1501D10.1.24.4GigabitEthernet2/0/0
O_ASE1501D10.1.23.3GigabitEthernet0/0/1
192.168.45.0/24O_ASE1501D10.1.24.4GigabitEthernet2/0/0
O_ASE1501D10.1.23.3GigabitEthernet0/0/1
255.255.255.255/32Direct00D127.0.0.1InLoopBack0
追踪路径:
[ar4]tracert172.16.0.1
tracerouteto172.16.0.1(172.16.0.1),maxhops:
30,packetlength:
40,pressCTRL_Ctobreak
110.1.24.220ms20ms10ms
210.1.12.130ms30ms20ms
tracert172.16.0.1
tracerouteto172.16.0.1(172.16.0.1),maxhops:
30,packetlength:
40,pressCTRL_Ctobreak
1192.168.35.540ms10ms10ms
2*192.168.45.440ms40ms
310.1.24.220ms20ms20ms
410.1.12.120ms30ms30ms
环路现象,ar1和ar2之间的链路断链后。
[ar2-GigabitEthernet0/0/0]dispiprouting-table
RouteFlags:
R-relay,D-downloadtofib
------------------------------------------------------------------------------
RoutingTables:
Public
Destinations:
21Routes:
25
Destination/MaskProtoPreCostFlagsNextHopInterface
10.0.0.0/24O_ASE1501D10.1.24.4GigabitEthernet2/0/0
10.0.1.0/24O_ASE1501D10.1.24.4GigabitEthernet2/0/0
10.0.2.0/24O_ASE1501D10.1.23.3GigabitEthernet0/0/1
O_ASE1501D10.1.24.4GigabitEthernet2/0/0
10.1.23.0/24Direct00D10.1.23.2GigabitEthernet0/0/1
10.1.23.2/32Direct00D127.0.0.1GigabitEthernet0/0/1
10.1.23.255/32Direct00D127.0.0.1GigabitEthernet0/0/1
10.1.24.0/24Direct00D10.1.24.2GigabitEthernet2/0/0
10.1.24.2/32Direct00D127.0.0.1GigabitEthernet2/0/0
10.1.24.255/32Direct00D127.0.0.1GigabitEthernet2/0/0
22.1.1.1/32Direct00D127.0.0.1LoopBack0
33.1.1.1/32OSPF101D10.1.23.3GigabitEthernet0/0/1
44.1.1.1/32OSPF101D10.1.24.4GigabitEthernet2/0/0
55.1.1.1/32O_ASE1501D10.1.24.4GigabitEthernet2/0/0
O_ASE1501D10.1.23.3GigabitEthernet0/0/1
127.0.0.0/8Direct00D127.0.0.1InLoopBack0
127.0.0.1/32Direct00D127.0.0.1InLoopBack0
127.255.255.255/32Direct00D127.0.0.1InLoopBack0
172.16.0.0/24O_ASE1501D10.1.23.3GigabitEthernet0/0/1
172.16.2.0/24O_ASE1501D10.1.23.3GigabitEthernet0/0/1
192.168.35.0/24O_ASE1501D10.1.24.4GigabitEthernet2/0/0
O_ASE1501D10.1.23.3GigabitEthernet0/0/1
192.168.45.0/24O_ASE1501D10.1.24.4GigabitEthernet2/0/0
O_ASE1501D10.1.23.3GigabitEthernet0/0/1
255.255.255.255/32Direct00D127.0.0.1InLoopBa