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1、非0到骨干区域的汇R1#ship1.0.0.0/32bnetted,1C1.1.1.1非0到骨干区域的汇R1#ship1.0.0.0/32bnetted,1C1.1.1.1isdirectlyconnected,100.0.0.0/32bnetted, 4OIA 100.26.26.33110/65via12.1.1.2,00:18:32,Serial1 OIA 100.26.26.49110/65via12.1.1.2,00:18:32,Serial1 O IA 100.26.26.1 110/65via 12.1.1.2, 00:18:32, Serial1 OIA 100.26.26.1

2、7110/65via12.1.1.2,00:18:32,12.0.0.0/30bnetted,1C12.1.1.0isdirectlyconnected,erfaceipaddress1.1.1.1ipaddress12.1.1.1clockrate!routerospfnetwork12.1.1.00.0.0.3areaerfaceipaddress2.2.2.2erfaceipaddress100.26.26.1erfaceipaddress100.26.26.17erfaceipaddress100.26.26.33erfaceipaddress100.26.26.49ipaddress

3、12.1.1.2routerospfnetwork12.1.1.00.0.0.3areanetwork100.26.26.00.0.0.63areaR2上进行汇总R2(config)#router ospf R2(config-router)#area 1 range 100.26.26.0 255.255.255.192 *要注意的是区域，掩R2上进行汇总R2(config)#router ospf R2(config-router)#area 1 range 100.26.26.0 255.255.255.192 *要注意的是区域，掩R1#ship1.0.0.0/32bnetted,1C1

4、.1.1.1isdirectlyconnected,100.0.0.0/26bnetted, 1O 100.26.26.0110/65via12.1.1.2,00:00:25,汇总后的路12.0.0.0/30bnetted,1C12.1.1.0isdirectlyconnected,0区域到非0R1#shiperfaceipaddress1.1.1.1ipaddress12.1.1.1clockrate!routerospfnetwork12.1.1.00.0.0.3areaerfaceipaddress2.2.2.2erfaceipaddress100.26.26.1erfaceipaddr

5、ess100.26.26.17erfaceipaddress100.26.26.33erfaceipaddress100.26.26.49ipaddress12.1.1.2routerospfnetwork12.1.1.00.0.0.3areanetwork100.26.26.00.0.0.63area1.0.0.0/32bnetted,11.1.1.1isdirectlyconnected,C100.0.0.0/32bnetted, 4100.26.26.33110/65via12.1.1.2,00:04:16,100.26.26.49110/65via12.1.1.2,00:04:16,1

6、00.26.26.1110/65via12.1.1.2,00:04:16,100.26.26.17110/65via12.1.1.2,00:04:16,OIA OIA OIA O 12.0.0.0/301.0.0.0/32bnetted,11.1.1.1isdirectlyconnected,C100.0.0.0/32bnetted, 4100.26.26.33110/65via12.1.1.2,00:04:16,100.26.26.49110/65via12.1.1.2,00:04:16,100.26.26.1110/65via12.1.1.2,00:04:16,100.26.26.1711

7、0/65via12.1.1.2,00:04:16,OIA OIA OIA O 12.0.0.0/30bnetted,1C12.1.1.0isdirectlyconnected,R1#sip1.0.0.0/32bnetted,1C1.1.1.1isdirectlyconnected,100.0.0.0/26bnetted,1O 100.26.26.0110/65via12.1.1.2,00:00:07,12.0.0.0/30bnetted,1C12.1.1.0isdirectly connected,R2#shipCodes:C-connected,S-ic,I-IGRP,R-RIP,M-mob

8、ile,B-D-EIGRP,EX-EIGRPexternal,O-OSPF,IA-erN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGPi-IS-IS,L1-IS-ISlevel-1,L2-IS-ISlevel-2,ia-IS-* - candidate default, U - per-user sicroute,o-ODR P - periodic downloaded sic routeerGatewayoflastr

9、esortisnot2.0.0.0/32bnetted,1C100.0.0.0/8isvariablysubnetted,5subnets,2100.26.26.32/28 is directly connected, Lo ack3 100.26.26.48/28 is directly connected, Lo ack4 100.26.26.0/26 is a summary, 00:02:03, Null0汇聚后会产生一个26 位的条目指NULL0 100.26.26.0/28 is directly connected, Lo100.26.26.16/28isdirectlyconn

10、ected,12.0.0.0/30bnetted,1C12.1.1.0isdirectlyconnected,R2(config)#iproute100.26.26.0255.255.255.192null R1#tracerouteType sequencetoTracingtherouteto112.1.1.216msec16msec162 12.1.1.2 *数据包将被丢汇总前 R2 的路由表R2#SHIP2.0.0.0/32bnetted,1112.1.1.216msec16msec162 12.1.1.2 *数据包将被丢汇总前 R2 的路由表R2#SHIP2.0.0.0/32bnet

11、ted,1C2.2.2.2isdirectlyconnected,100.0.0.0/28bnetted,4OE2 OE2 OE2 O 100.26.26.32110/20via23.1.1.3,00:37:06,100.26.26.48110/20via23.1.1.3,00:37:06,100.26.26.0110/20via23.1.1.3,00:37:06,100.26.26.16110/20via23.1.1.3,00:37:06,3.0.0.0/24bnetted,1O 3.3.3.0110/20via23.1.1.3,00:37:06,23.0.0.0/24bnetted,1C2

12、3.1.1.0isdirectlyconnected,ASBRR3上做汇总routerospfrouter-idddress 100.26.26.0 255.255.255.224 tag sumddress100.26.26.32255.255.255.224tag42 redistribute connected subnetsnetwork23.1.1.00.0.0.255areaR2 的路由表R2#ship2.0.0.0/32bnetted,1C2.2.2.2isdirectlyconnected,100.0.0.0/27bnetted,2O E2100.26.26.32110/20v

13、ia23.1.1.3,00:00:08,Serial0 O E2100.26.26.0 110/20 via 23.1.1.3, 00:00:48, Serial03.0.0.0/24bnetted,1O 3.3.3.0110/20via23.1.1.3,00:41:26,23.0.0.0/24bnetted,1O E2100.26.26.32110/20via23.1.1.3,00:00:08,Serial0 O E2100.26.26.0 110/20 via 23.1.1.3, 00:00:48, Serial03.0.0.0/24bnetted,1O 3.3.3.0110/20via2

14、3.1.1.3,00:41:26,23.0.0.0/24bnetted,1C23.1.1.0isdirectlyconnected,R2#sh ip route 100.26.26.0 Knownviaospf1,distance110,metricTag88,typeextern2,forwardmetricLastupdatefrom23.1.1.3onSerial0,00:03:14ago Routing Descriptor Blocks:*23.1.1.3,from3.3.3.3,00:03:14ago,viaRoutemetricis20,trafficsharecountisR2

15、#sh ip rou 100.26.26.32 Knownviaospf1,distance110,metricTag42,typeextern2,forwardmetricLastupdatefrom23.1.1.3onSerial0,00:04:45ago Routing Descriptor Blocks:*23.1.1.3,from3.3.3.3,00:04:45ago,viaSerial0 Route metric is 20, traffic share count is 1在 R2 上做路由重分router2redistributeospf1metric1route-mapnetworkroute-mapchecktagpermit10 match tag 88R1#ship100.0.0.0/27bnetted,1100.26.26.0120/1via12.1.1.2,00:00:24, 12.0.0.0/30bnetted,1C12.1.1.0isdirectlyconne

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