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Ò»¡¢RIP·ÓɺÍ̸

    RIP ÔڹعØ×Ô¶¯»ã×ܵÄÇé¿öÏ £¬¿ÉÔÚËÁÒâ·ÓÉÆ÷ÉϽøÐÐ×Ô¶¯»ã×Ü £¬ÇÒ×Ô¶¯»ã×ܺó £¬ÏÂÓηÓÉÆ÷Ö»ÄܽÓÊܵ½»ã×Ü·ÓÉ £¬ÎÞ·¨½Ó¹Üµ½Ã÷ϸ·ÓÉ¡£

    ÅäÖúÅÁ

    ÔÚR1ÏνÓR2½Ó¿ÚÉÏÅäÖûã×ܺÅÁî

    interface gi 3/1/1

    ip rip summary-adress 192.168.1.0 255.255.255.240

    R2µÄ·ÓÉ±í£º

     ´ËʱR2Ö»ÊÕµ½»ã×Ü·ÓÉ £¬Ã»ÓÐÃ÷ϸ·ÓÉÌõ¿î

            R   192.168.1.0/28 [120/1] via 9.9.13.3, 00:00:41, GigabitEthernet 4/1/0

     Áí±í £¬RIPµÄdatabaseÊý¾Ý¿âshow ip rip databaseÖÐÒ²ÊÇÖ»Ô̺¬ÁË»ã×ÜÌõ¿î £¬Ã»ÓÐÔ̺¬Ã÷ϸÌõ¿î£º

            192.168.1.0/28  [1] via 9.9.13.3 GigabitEthernet 4/1/0  00:25 

    ×¢Ã÷£º

        1¡¢    ±Ø±ØÒª¹Ø¹Ø×Ô¶¯»ã×Üno auto-summary

        2¡¢    »ã×Ü·ÓɵÄÑÚÂë±ØÐë´óÓÚ»òµÅ×ÚÖ÷ÀàÍøÂçÑÚÂë £¬²»È»½«»áÌáÐÑ“»ã×ܵÄÑÚÂë±ØÐë´óÓÚ»òµÅ×ÚÖ÷Àà”µÄÃýÎó

              RSR50-X(config-if-GigabitEthernet 4/1/1)#ip rip summary-address192.168.0.0    255.255.0.0      

                % Summary mask must be greater orequal to major net

       3¡¢    »ã×ÜÄܹ»ÔÚËÁÒâһ̨·ÓÉÆ÷½øÐÐ £¬±ØÒªÔÚ·ÓÉ·¢Ë͵ĽӿڽøÐС£

       4¡¢    »ã×ܺó £¬ÆäËû·ÓÉÆ÷Ö»»áÊÕµ½»ã×ܵÄ·ÓÉ £¬²»»áÊÕµ½Ã÷ϸµÄ·ÓÉ¡£

       5¡¢     Ö»Óб¾µØ´æÔÚÓÐÃ÷ϸ·ÓɵÄǰÌáÏ £¬ÄÜÁ¦´Ó×ö»ã×ܵĽӿڷ¢³ö»ã×Ü·ÓÉ£»Í¬Ê±Ö±µ½Ã÷ϸµÄ×îºóÒ»ÌõÒþû £¬»ã×ܲŻáÒþû¡£

 

¶þ¡¢OSPF·ÓɺÍ̸

       OSPF·ÓɺÍ̸ֻ֧³ÖÔÚABRºÍASBRÉÏ»ã×Ü £¬ÏÂÃæ±ðÀëÕë¶ÔÁ½Àà½øÐÐ×¢Ã÷£º

1¡¢ÔÚABRÉϽøÐлã×Ü

       »ã×ÜǰÌ᣺ABR½öÔÚ½«1/2ÀàLSAת»»³É3Ààʱ(¿çareaʱ£© £¬Äܹ»¶ÔLSA½øÐлã×ܹ«¸æ

    ÅäÖúÅÁî

        RSR50-X(config)#router ospf 1

        RSR50-X(config-router)#area 0 range 192.168.0.0 255.255.0.0

    ·ÓɱíÏÔʾ£º

1)    Ö´Ðлã×ܵÄABR·ÓÉÆ÷±¾µØÂ·ÓÉ±í£ºÄ¬ÈϲúÉúÒ»ÌõNull 0µÄ·ÓÉ

       O  192.168.0.0/16[110/0] via 0.0.0.0, 00:00:12, Null 0 

2)    OSPFÁÚ¾Ó·ÓɱíµÄ·ÓÉ±í£ºÖ»Óлã×Ü·ÓÉ £¬²»Ô̺¬Ã÷ϸ·ÓÉ

       O IA 192.168.0.0/16 [110/2] via9.9.12.1, 00:02:41, GigabitEthernet 0/1

3)    OSPFÁÚ¾ÓµÄdatabaseÒ²Ö»Óлã×ܺóµÄLSA £¬²»Ô̺¬Ã÷ϸµÄLSA

                SummaryLink States  (Area 0.0.0.1)

                LinkID          ADV Router      Age      Seq#         CkSum      Route

               192.168.0.0     172.18.157.157  367  0x80000001   0x20d8 192.168.0.0/16    

       ×¢Ã÷

     1¡¢   »ã×ܺÅÁîºóÃæ²ÎÊýÚ¹ÊÍ

RSR50-X(config-router)#area 0 range 192.168.0.0 255.255.0.0 £¿

          advertise      Advertise this range (default)  //Ö»»á¹«¸æ»ã×ܺó·ÓÉ£¨Ä¬ÈϲÎÊý£©

cost           User specifiedmetric for this range

            not-advertise  DoNotAdvertise this range    //»ã×Ü·ÓɺÍÃ÷ϸ·Óɾù²»¹«¸æ £¬Äܹ»´ïµ½Â·ÓɹýÂ˵ÄÖ÷ÕÅ

    2¡¢    Ö»ÄÜÔÚABRÉÏ»ã×Ü1/2Ààת3ÀàµÄLSA

2¡¢ÔÚASBRÉÏ»ã×Ü

    ½«±í²¿LSA¹«¸æµ½×ÔÖÎϵͳʱ £¬ÔÚASBR·ÓÉÆ÷¿É¶Ô±í²¿LSA£¨5Ààor7Àࣩ½øÐлã×ܹ«¸æ¡£

   ÅäÖúÅÁî

          RSR50-X(config)#router ospf 1

RSR50-X(config-router)#redistribute static subnets

          RSR50-X(config-router)#summary-address 172.18.0.0 255.255.0.0

   Â·ÓÉÆ÷µÄ·ÓɱíÏÔʾ£º

1£©    Ö´Ðлã×ܵÄASBR·ÓÉÆ÷·ÓÉ±í£ºÄ¬ÈϲúÉúÒ»ÌõNull 0µÄ·ÓÉ

        O    172.18.0.0/16[110/0] via 0.0.0.0, 00:00:12, Null 0 

2£©    OSPFÁÚ¾Ó·ÓÉ±í£ºÖ»Óлã×ܵÄ·ÓÉ £¬Ã»ÓÐÃ÷ϸ·ÓÉ

         O IA 192.168.0.0/16 [110/2] via 9.9.12.1,00:02:41, GigabitEthernet 0/1

3£©    OSPFÁÚ¾ÓµÄdatabaseÒ²Ö»Óлã×ܺóµÄ £¬²»Ô̺¬Ã÷ϸµÄLSA

                AS External Link States

              Link ID       ADV Router    Age      Seq#            CkSum   Route           Tag

              172.18.0.0   192.168.1.2     406  0x80000001 0xeea4   E2172.18.0.0/16      0

      ×¢Ã÷

            1£©    Ö»ÄÜÔÚASBRÉÏ»ã×ܱ¾µØ²úÉúµÄ5Àà»òÕß7ÀàLSA £¬²»ÄÜ»ã×ܽø½¨µ½µÄ5Àà»òÕß7ÀàLSA

            2£©    »ã×ܺÅÁîºóÃæ²ÎÊýÚ¹ÊÍ

RSR50-X(config-router)#summary-address 172.18.0.0 255.255.0.0 £¿
cost           User specifiedmetric for this range

          not-advertise  DoNotAdvertise this range    //»ã×Ü·ÓɺÍÃ÷ϸ·Óɾù²»¹«¸æ £¬Äܹ»´ïµ½Â·ÓɹýÂ˵ÄÖ÷ÕÅ

 

Èý¡¢BGP·ÓÉ»ã×Ü

    BGP·ÓÉ»ã×Ü·ÖΪÁ½ÖÖ²½Ö裺network±¾µØÐû¸æÒÔ¼°aggregate-address±¾µØ¾ÛºÏ £¬ÏÖ±ðÀë½éÉÜÈçÏ£º

1¡¢network±¾µØÐû¸æ

       Í¨¹ý±¾µØ»ú¹ØÒ»ÌõÖ¸ÏòNULL0µÄ»ã×ܾ²Ì¬Â·ÓÉ £¬¶øºó½«¸Ã¾²Ì¬Â·ÓÉÔÚBGP¹ý³ÌÖÐnetwork³öÈ¥¡£

    ÅäÖúÅÁî

       ip route 30.0.0.0 255.0.0.0 Null 0

       router bgp 1

       network 30.0.0.0 mask 255.0.0.0

   Â·ÓÉÆ÷µÄ·ÓɱíÏÔʾ£º

   1£©    Ö´ÐÐnetwork»ã×ܵÄBGP·ÓÉÆ÷µÄ·Óɱí £¬Ô̺¬´ïµ½Í¨¹ýÆäËûºÍ̸½ø½¨µ½µÄ´ïµ½Ö¸±êµÄÃ÷ϸ·ÓÉ £¬ÒÔ¼°±¾µØ³ö½Ó¿ÚΪNULL 0µÄ¾²Ì¬Â·ÓÉ        

                S    30.0.0.0/8 is directly connected, Null 0

                  30.30.30.30/32 [110/100] via 9.9.12.2, 1d,03:31:09, GigabitEthernet 4/1/4

   2£©    BGPÁÚ¾Ó·ÓÉÆ÷ £¬Ö»Ô̺¬»ã×ܵÄ·ÓÉ

            B    30.0.0.0/8 [200/0] via 9.9.13.1, 00:00:02

2¡¢aggregate-address¾ÛºÏ´ó¾Ö

       ÔÚ±¾µØBGP±íÖÐÒѾ­´æÔÚÃ÷ϸµÄBGP·ÓÉÌõ¿î±êǰÌáÏ £¬Í¨¹ýÔÚBGP·Óɹý³ÌÖÐʹÓÃaggregate-addressºÅÁî½øÐзÓÉ»ã×Ü £¬½ø¶øÊµÏÖ½«»ã×Ü·Óɹ«¸æ³öÈ¥µÄÖ÷ÕÅ¡£¡£

    ÅäÖúÅÁî

     router bgp 1

         neighbor 9.9.13.3 remote-as 1

         aggregate-address 30.0.0.0 255.0.0.0 summary-only 

         redistribute ospf 111 match internal

   Â·ÓÉÆ÷µÄ·ÓɱíÏÔʾ£º

    1£©    Ö´ÐÐaggregate»ã×ܵÄBGP·ÓÉÆ÷µÄ·Óɱíshow ip route £¬»á×Ô¶¯ÌìÉúÒ»¸ö»ã×ܵÄÖ¸Ïònull 0 ¿Õ½Ó¿ÚµÄ·ÓÉ £¬ÒÔ¼°´ïµ½Ö¸±êµÄÃ÷ϸ·ÓÉ      

        B    30.0.0.0/8 [200/0] via 0.0.0.0, 00:00:01, Null 0

        O    30.30.30.30/32 [110/100] via 9.9.12.2, 1d,03:44:34, GigabitEthernet 4/1/4

   2£©    Ö´ÐÐaggregate»ã×ܵÄBGP·ÓÉÆ÷µÄBGP±íshow ip bgp £¬Ã÷ϸ·ÓɻᱻÏóÕ÷Ϊs £¬±»ÒÖÔìµÄ £¬Ã÷ϸ²»»á´«µÝ¸øÁÚ¾Ó£¨°ÑÎÈ£ºÎÞÃ÷ϸ·ÓÉÊÇÓÉÓÚÅäÖÃÁËsummary-only¹Ø¼ü×Öµ¼Ö£©

        RSR50-X#sh ip bgp 

         Network          Next Hop            Metric      LocPrf      Weight Path

        *>  30.0.0.0         0.0.0.0                                      32768     i

        s>  30.30.30.30/32   9.9.12.2               100                   32768     i

   3£©    BGPÁÚ¾Ó·ÓÉÆ÷show ip route £¬Ö»Ô̺¬»ã×ܵÄ·ÓÉ £¬ÎÞÃ÷ϸ·ÓÉ£¨°ÑÎÈ£ºÎÞÃ÷ϸ·ÓÉÊÇÓÉÓÚÅäÖÃÁËsummary-only¹Ø¼ü×Öµ¼Ö£©

            B    30.0.0.0/8 [200/0] via 9.9.13.1, 00:00:02

   4£©    BGPÁÚ¾Ó·ÓÉÆ÷show ip bgp ±íÖÐ £¬Ò²Ö»Ô̺¬»ã×ܵÄ·ÓÉ £¬ÎÞÃ÷ϸ·ÓÉ

                 Network          Next Hop            Metric      LocPrf      Weight Path

            *>i9.9.12.0/24      9.9.13.1               100         100           0     ?

            *>i30.0.0.0            9.9.13.1                 0         100           0     ?

   ×¢Ã÷£º

    1£©    ʹÓÃaggregate-addressºÅÁî»ã×ܵÄǰÌáÊǸ÷ÓÉÆ÷µÄBGP·ÓÉ±í±Ø±ØÒªÓжÔÓ¦µÄÃ÷ϸ·ÓÉ £¬Òò¶ø±ØÒªÊ±±ØÒª½«ÆäËû·ÓÉÆ÷µÄÃ÷ϸ·ÓɳÁа䲼µ½BGPÖÐ £¬Ê¹ÓÃnetworkÒ²ÊÇÄܹ»µÄ¡£

    2£©    aggregate-address ÆäËûºÅÁîÚ¹ÊÍ

                RSR50-X(config-router)#aggregate-address 30.0.0.0 255.0.0.0 ?

                as-set        Generate AS set path information

                summary-only  Filter more specific routes from updates

                   <cr> 

            GA»Æ½ð¼×·ÓÉÆ÷Ö»Ö§³Ö2¸ö²ÎÊýas-setºÍsummary-only¡£

            ÆäÖÐas-setµÄÔ¢ÒâΪ£º±£Áô¾ÛºÏµØÖ·ËùÓÐÃ÷ϸ·ÓɵÄÁìÓòÄÚõè¾¶µÄ AS õè¾¶ÐÅÏ¢£º±£Áô¾ÛºÏµØÖ·ÁìÓòÄÚõè¾¶µÄ AS õè¾¶ÐÅÏ¢

                     *>i172.16.0.0       9.9.13.1                 0         100           0 {2,4} i

                     *>i172.16.1.0/24    9.9.12.2                 0         100           0 2 i

                     *>i172.16.2.0/24    9.9.14.4                 0         100           0 4 i

            ÆäÖÐsummary-onlyµÄÔ¢ÒâΪֻÏòBGPÁÚ¾Ó¹«¸æ»ã×Ü·ÓÉ £¬²»¹«¸æÃ÷ϸ·ÓÉ¡£ÈôÊDz»¼Ósummary-only £¬ÔòÃ÷ϸºÍ»ã×ܾù»á¹«¸æ¡£

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