《协议路由汇总方法分析教学课件电子教案.pptx》由会员分享，可在线阅读，更多相关《协议路由汇总方法分析教学课件电子教案.pptx（17页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、03 OSPF 协议路由汇总方法分析密级：各种路由协议路由汇总方法分各种路由协议路由汇总方法分析析锐捷网络-技术服务部-培训中心| 3 OSPF路由汇总 OSPF路由汇总的控制点ABR将1/2类LSA转换为3类LSA时,可对产生的3类LSA进行汇总通告ASBR将外部LSA通告进自治系统内时,可对这些外部LSA进行汇总通告| 4OSPF路由汇总 ABR路由汇总配置命令R1R2R3R4area 1area 0area 2router ospf 1area 1 range 172.9.0.0 255.255.0.0Lo0:172.9.0.1/32172.9.12.0/24| 5第二章 OSPF路由汇
2、总 ABR路由汇总结果R3、R4的路由表r3#sh ip roO IA 172.9.0.0/16 110/2 via 9.9.23.2, 00:14:24, FastEthernet0/0.23r4#sh ip roO IA 172.9.0.0/16 110/3 via 192.9.34.3, 00:14:19, FastEthernet0/0.34| 6第二章 OSPF路由汇总 ABR路由汇总结果R2的数据库没汇总之前的数据库汇总后的区别ABR不再产生明细的3类LSA Summary Net Link States (Area 0)Link ID ADV Router Age Seq# Ch
3、ecksum172.9.0.0 9.9.0.2 1324 0 x80000001 0 x00BCB5 Summary Net Link States (Area 0)Link ID ADV Router Age Seq# Checksum172.9.0.1 9.9.0.2 7 0 x80000001 0 x00BCB3172.9.12.0 9.9.0.2 7 0 x80000001 0 x00382E| 7第二章 OSPF路由汇总 ABR路由汇总结果R2的路由表自动产生下一跳为Null0接口的汇总路由r2#sh ip ro 172.9.0.0/16 is variably subnetted,
4、 3 subnets, 3 masksO 172.9.0.1/32 110/2 via 172.9.12.1, 00:00:46, FastEthernet0/0.12O 172.9.0.0/16 is a summary, 00:00:46, Null0C 172.9.12.0/24 is directly connected, FastEthernet0/0.12 9.0.0.0/8 is variably subnetted, 3 subnets, 2 masksC 9.9.0.2/32 is directly connected, Loopback0O 9.9.0.3/32 110/2
5、 via 9.9.23.3, 00:00:46, FastEthernet0/0.23| 8第二章 OSPF路由汇总 ABR路由汇总结果产生Null0接口汇总路由的意义R1R2R3R4area 1area 0area 2Lo0:172.9.0.1/32汇总路由汇总路由172.9.0.0/16出口出口R3:default-informaion originate默认路由默认路由R2R2不产生不产生Null0Null0接口汇总路由接口汇总路由| 9第二章 OSPF路由汇总 ABR路由汇总结果产生Null0接口汇总路由的意义R1R2R3R4area 1area 0area 2Lo0:172.9.0.
6、1/32访问不存在的一个地址访问不存在的一个地址172.9.0.2172.9.0.2的数据的数据R2R2上没有相应的路由，于上没有相应的路由，于是按照默认路由转发给是按照默认路由转发给R3R3R3R3上面存在上面存在R2R2通告的通告的172.9.0.0/16172.9.0.0/16的汇的汇总路由，于是转发回给总路由，于是转发回给R2R2直至直至TTL=0TTL=0，报文被丢弃，其中一台设备返回，报文被丢弃，其中一台设备返回TTLTTL超时超时| 10第二章 OSPF路由汇总 ABR路由汇总相关注意事项汇总的条件ABR仅在将1/2类LSA转换为3类LSA时，可以进行汇总如果1/2类LSA转换后
7、的3类LSA中的网络号不在汇总网段范围内，则仍以精确的3类LSA通告。汇总路由其他参数r2(config-router)#area 1 range 172.9.0.0 255.255.0.0 ? advertise Advertise this range (default) cost User specified metric for this range /调整汇总的调整汇总的3 3类类LSALSA的的MetricMetric not-advertise DoNotAdvertise this range /抑制产生该汇总的抑制产生该汇总的3 3类类LSALSA以及相关明以及相关明 细细3
8、 3类类LSALSA| 11第二章 OSPF路由汇总 ASBR路由汇总配置命令R1R2R3R4RIParea 0area 2router ospf 1 summary-address 172.9.0.0 255.255.0.0 redistribute rip subnetsLo0:172.9.0.1/32172.9.12.0/24| 12第二章 OSPF路由汇总 ASBR路由汇总结果R3的路由表r3#sh ip roO E2 172.9.0.0/16 110/20 via 9.9.23.2, 00:03:09, FastEthernet0/0.23 9.0.0.0/8 is variably
9、 subnetted, 3 subnets, 2 masksO 9.9.0.2/32 110/2 via 9.9.23.2, 00:03:09, FastEthernet0/0.23C 9.9.0.3/32 is directly connected, Loopback0C 9.9.23.0/24 is directly connected, FastEthernet0/0.23 192.9.0.0/32 is subnetted, 1 subnetsO 192.9.0.4 110/2 via 192.9.34.4, 00:03:09, FastEthernet0/0.34C 192.9.34
10、.0/24 is directly connected, FastEthernet0/0.34| 13第二章 OSPF路由汇总 ASBR路由汇总结果R4的路由表r4#sh ip roO E2 172.9.0.0/16 110/20 via 192.9.34.3, 00:04:33, FastEthernet0/0.34 9.0.0.0/8 is variably subnetted, 3 subnets, 2 masksO IA 9.9.0.2/32 110/3 via 192.9.34.3, 00:04:35, FastEthernet0/0.34O IA 9.9.0.3/32 110/2
11、via 192.9.34.3, 00:04:43, FastEthernet0/0.34O IA 9.9.23.0/24 110/2 via 192.9.34.3, 00:04:39, FastEthernet0/0.34 192.9.0.0/32 is subnetted, 1 subnetsC 192.9.0.4 is directly connected, Loopback0C 192.9.34.0/24 is directly connected, FastEthernet0/0.34| 14第二章 OSPF路由汇总 ASBR路由汇总结果R2的路由表r2#sh ip ro 172.9.
12、0.0/16 is variably subnetted, 3 subnets, 3 masksR 172.9.0.1/32 120/1 via 172.9.12.1, 00:00:20, FastEthernet0/0.12O 172.9.0.0/16 is a summary, 00:08:20, Null0C 172.9.12.0/24 is directly connected, FastEthernet0/0.12 9.0.0.0/8 is variably subnetted, 3 subnets, 2 masksC 9.9.0.2/32 is directly connected
13、, Loopback0O 9.9.0.3/32 110/2 via 9.9.23.3, 00:07:17, FastEthernet0/0.23C 9.9.23.0/24 is directly connected, FastEthernet0/0.23 192.9.0.0/32 is subnetted, 1 subnetsO IA 192.9.0.4 110/3 via 9.9.23.3, 00:07:06, FastEthernet0/0.23O IA 192.9.34.0/24 110/2 via 9.9.23.3, 00:07:11, FastEthernet0/0.23| 15第二
14、章 OSPF路由汇总 ASBR路由汇总相关注意事项汇总的条件重发布路由生成的5类LSA中的网络号不在汇总网段范围内，则仍以精确的5类LSA通告。汇总路由其他参数r2(config-router)#summary-address 172.9.0.0 255.255.0.0 ? not-advertise Do not advertise when translating OSPF type-7 LSA tag Set tag metric Set metric | 16第二章 OSPF路由汇总 ASBR路由汇总其他方法R1R2R3R4RIParea 0area 2access-list 1 permit 172.9.0.0route-map Static2OSPF permit 10 match ip address 1ip route 172.9.0.0 255.255.0.0 Null0router ospf 1redistribute static subnets route-map Static2OSPFLo0:172.9.0.1/32172.9.12.0/24THANKS锐捷网络股份有限公司地址：北京海淀区复兴路29号中意鹏奥大厦东塔A座11层 邮编：100036Office Tel: 010-51715999 Fax: 010-