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OSPF VPNµÄÅäÖ÷dz£¼òµ¥£¬ÕâÀﲻϸ½²ÅäÖò½Ö裬¿ÉÒÔͨ¹ý°¸ÀýÁ˽⵽£»±¾Õ½ڵÄÖصãÊÇͨ¹ý°¸ÀýÖеÄshowһЩÉ豸ÐÅÏ¢À´Èôó¼Ò¸üÖ±¹ÛµÄÁ˽âOSPF VPNµÄ¹¤×÷Ч¹û¡£Í¨¹ýЧ¹ûµÄÑÝʾ£¬¸¨Öú¹¤³ÌʦÀí½âÔÚʵ¼ÊMPLS-VPNÍøÂçÖÐOSPF·ÓɵĴæÔÚÐÎʽ£¬ÒÔÓÃÓÚÖ¸µ¼Â·ÓÉÉè¼Æ¡£

 

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ÍØÆËÄ£ÄâMPLS-VPN CEË«¹éÊô»·¾³£¬CEÓëPE¼äÔËÐÐOSPFЭÒé¡£SW1/SW2/SW3ΪPE£¬SW4/SW5ΪCE¡£

 

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3¡¢Domain-id²»Ò»ÖÂÇé¿öϵÄOSPF-VPN

 

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1¡¢»ù´¡ÅäÖãº

ÕâÀïµÄ»ù´¡ÅäÖðüÀ¨ÁËÍêÕûµÄÓòÄÚL3VPNµÄÅäÖá£Í¨¹ýÒÔÏÂÅäÖ㬿ÉÒÔ½¨Á¢Ë½Íø·ÓɼävpnÁªÍ¨¡£

SW1ÅäÖãº

hostname SW1

mpls ip

!

ip vrf ruijie

 rd 1:1

 route-target both 1:1

!

interface GigabitEthernet 0/1

no switchport

 ip vrf forwarding ruijie

 ip address 10.10.15.1 255.255.255.0

 duplex auto

 speed auto

!

interface GigabitEthernet 0/2

 no switchport

 ip address 1.1.13.1 255.255.255.0

 label-switching

 mpls ip

 duplex auto

 speed auto

!

!

interface Loopback 0

  ip address 1.1.1.1 255.255.255.255

!

router bgp 1

 bgp router-id 1.1.1.1

 bgp log-neighbor-changes

 neighbor 3.3.3.3 remote-as 1

 neighbor 3.3.3.3 update-source Loopback 0

 !

 address-family ipv4

 redistribute ospf 1 match internal

 neighbor 3.3.3.3 activate

 exit-address-family

 !

 address-family vpnv4 unicast

 neighbor 3.3.3.3 activate

 neighbor 3.3.3.3 send-community extended

 exit-address-family

 !

 address-family ipv4 vrf ruijie

 maximum-prefix 10000

 network 10.10.12.0 mask 255.255.255.0

 redistribute ospf 1 match internal external nssa-external

 exit-address-family

!

!

router ospf 1 vrf ruijie

 redistribute bgp subnets

 network 10.10.0.0 0.0.255.255 area 0

!

router ospf 100

 network 1.1.1.1 0.0.0.0 area 0

 network 1.1.0.0 0.0.255.255 area 0

!        

!

mpls router ldp

 ldp router-id 1.1.1.1

!

SW2ÅäÖãº

hostname SW2

!

mpls ip

!

ip vrf ruijie

 rd 1:2

 route-target both 1:1

!

interface GigabitEthernet 0/2

no switchport

 ip vrf forwarding ruijie

 ip address 10.10.25.2 255.255.255.0

 duplex auto

 speed auto

!

interface GigabitEthernet 0/1

no switchport

  ip address 1.1.23.2 255.255.255.0

 label-switching

 mpls ip

 duplex auto

 speed auto

!

interface Loopback 0

  ip address 2.2.2.2 255.255.255.255

!

interface Loopback 1

 ip vrf forwarding ruijie

 ip address 22.22.22.22 255.255.255.255

!

router bgp 1

bgp router-id 2.2.2.2

 bgp log-neighbor-changes

 neighbor 3.3.3.3 remote-as 1

 neighbor 3.3.3.3 update-source Loopback 0

 !

 address-family ipv4

 neighbor 3.3.3.3 activate

 exit-address-family

 !

 address-family vpnv4 unicast

 neighbor 3.3.3.3 activate

 neighbor 3.3.3.3 send-community extended

 exit-address-family

 !

 address-family ipv4 vrf ruijie

 maximum-prefix 10000

 network 10.10.12.0 mask 255.255.255.0

 network 22.22.22.22 mask 255.255.255.255

 redistribute ospf 1 match internal external nssa-external

 exit-address-family

!

router ospf 1 vrf ruijie

 redistribute bgp subnets

 network 10.10.0.0 0.0.255.255 area 0

 area 0 sham-link 22.22.22.22 33.33.33.33

!

router ospf 100

 network 1.1.0.0 0.0.255.255 area 0

 network 2.2.2.2 0.0.0.0 area 0

!

mpls router ldp

 ldp router-id 2.2.2.2

SW3ÅäÖãº

hostname SW3

!

mpls ip

!

ip vrf ruijie

 rd 1:3

 route-target both 1:1

!

interface GigabitEthernet 0/1

 no switchport

 ip address 1.1.13.3 255.255.255.0

 label-switching

 mpls ip 

 duplex auto

 speed auto

!

interface GigabitEthernet 0/2

 no switchport

 ip address 1.1.23.3 255.255.255.0

 label-switching

 mpls ip

 duplex auto

 speed auto

!

interface GigabitEthernet 0/3

no switchport

 ip vrf forwarding ruijie

  ip address 20.20.34.3 255.255.255.0

 duplex auto

 speed auto

!

interface Loopback 0

  ip address 3.3.3.3 255.255.255.255

!

interface Loopback 1

 ip vrf forwarding ruijie

  ip address 33.33.33.33 255.255.255.255

!

router bgp 1

bgp router-id 3.3.3.3

 bgp log-neighbor-changes

 neighbor 1.1.1.1 remote-as 1

 neighbor 1.1.1.1 update-source Loopback 0

 neighbor 2.2.2.2 remote-as 1

 neighbor 2.2.2.2 update-source Loopback 0

 !       

 address-family ipv4

 neighbor 1.1.1.1 activate

 neighbor 2.2.2.2 activate

 exit-address-family

 !

 address-family vpnv4 unicast

 neighbor 1.1.1.1 activate

 neighbor 1.1.1.1 send-community extended

 neighbor 2.2.2.2 activate

 neighbor 2.2.2.2 send-community extended

 exit-address-family

 !

 address-family ipv4 vrf ruijie

 maximum-prefix 10000

 network 20.20.34.0 mask 255.255.255.0

 network 33.33.33.33 mask 255.255.255.255

 redistribute ospf 1 match internal external nssa-external

 exit-address-family

!

router ospf 1 vrf ruijie

 redistribute bgp subnets

 network 20.20.0.0 0.0.255.255 area 0

 area 0 sham-link 33.33.33.33 22.22.22.22

!

router ospf 100

 network 1.1.0.0 0.0.255.255 area 0

 network 3.3.3.3 0.0.0.0 area 0

!

mpls router ldp

 ldp router-id 3.3.3.3

SW4ÅäÖãº

hostname SW4

!

interface GigabitEthernet 0/3

 no switchport

 ip address 20.20.34.4 255.255.255.0

 duplex auto

 speed auto

!

interface Loopback 0

 ip address 4.4.4.4 255.255.255.255

!

router ospf 1

 network 0.0.0.0 255.255.255.255 area 0

!

SW5ÅäÖãº

hostname SW5

!

interface GigabitEthernet 0/1

no switchport

 ip address 10.10.15.5 255.255.255.0

 duplex auto

 speed auto

!

interface GigabitEthernet 0/2

no switchport

 ip address 10.10.25.5 255.255.255.0

 duplex auto

 speed auto

!

interface Loopback 0

 ip address 5.5.5.5 255.255.255.255

!

router ospf 1

 network 0.0.0.0 255.255.255.255 area 0

2¡¢Domain-idÒ»ÖÂÇé¿öϵÄOSPF-VPN£º

¶ÔÓÚ10.XÈí¼þƽ̨µÄÉ豸£¬½«É豸Éý¼¶µ½10.4(3)¼°ÒÔÉÏÈí¼þ°æ±¾£¬¸Ã°æ±¾ÒÔºó²ÅÖ§³ÖOSPF-VPN¹¦ÄÜ¡£

ÔÚĬÈÏÇé¿öÏ£¬DOMAIN-IDΪ¿Õ¡£

ͨ¹ýshow ip bgp vrf ruijie 5.5.5.5À´²é¿´MBGPµÄOSPFÀ©Õ¹ÊôÐÔ£º

SW3#sho ip bgp vrf ruijie 5.5.5.5

BGP routing table entry for 5.5.5.5/32

Paths: (2 available, best #1, table Default-IP-Routing-Table)

  Not advertised to any peer

  Local

    1.1.1.1 from 1.1.1.1 (1.1.1.1)

      Origin incomplete, metric 101, localpref 100, valid, internal, best

      Extended Community: RT:1:1 OSPF ROUTER ID:10.10.15.1:0 OSPF RT:0.0.0.0:1:0

      mpls labels in/out nolabel/1024

      Last update: Fri Mar 18 15:28:14 2011

 

  Local

    2.2.2.2 from 2.2.2.2 (2.2.2.2)

      Origin incomplete, metric 101, localpref 100, valid, internal

      Extended Community: RT:1:1 OSPF ROUTER ID:22.22.22.22:0 OSPF RT:0.0.0.0:1:0

      mpls labels in/out nolabel/1024

      Last update: Fri Mar 18 15:36:11 2011

ÔÚSW1/SW2/SW3Ìí¼ÓÅäÖãº

Router ospf 1 vrf ruijie

Domain-id 1.1.1.1

ͨ¹ýshow ip bgp vrf ruijie 5.5.5.5À´²é¿´MBGPµÄOSPFÀ©Õ¹ÊôÐÔ£¬¿ÉÒÔ¿´µ½£¬À©Õ¹ÊôÐÔÖÐЯ´øÁËDOMAIN

SW3#sho ip bgp vrf ruijie 5.5.5.5

BGP routing table entry for 5.5.5.5/32

Paths: (2 available, best #1, table Default-IP-Routing-Table)

  Not advertised to any peer

  Local

    1.1.1.1 from 1.1.1.1 (1.1.1.1)

      Origin incomplete, metric 101, localpref 100, valid, internal, best

      Extended Community: RT:1:1 OSPF DOMAIN ID:0X0005:0X010101010200 OSPF ROUTER ID:10.10.15.1:0 OSPF RT:0.0.0.0:1:0

      mpls labels in/out nolabel/1024

      Last update: Fri Mar 18 16:17:54 2011

 

  Local

    2.2.2.2 from 2.2.2.2 (2.2.2.2)

      Origin incomplete, metric 101, localpref 100, valid, internal

      Extended Community: RT:1:1 OSPF DOMAIN ID:0X0005:0X010101010200 OSPF ROUTER ID:22.22.22.22:0 OSPF RT:0.0.0.0:1:0

      mpls labels in/out nolabel/1024

      Last update: Fri Mar 18 16:18:04 2011

ͨ¹ýshow ip route vrf ruijie²é¿´SW1/SW2µÄ·ÓÉ±í£¬È·ÈÏ4.4.4.4µÄ·ÓÉΪB¶ø²»ÊÇO E2£¨Èç¹ûûÓÐOSPF-VPN¹¦ÄÜ£¬ÄÇôÔÚCEË«¹éÊô»·¾³Ï£¬¿Ï¶¨ÓÐһ̨PEѧϰµ½µÄ˽Íø·ÓÉÊÇ´ÓOSPFѧϰµ½µÄ£¬ÕâÀïÒ²ÊǵäÐ͵ÄË«ÏòÖØ·¢²¼²úÉúµÄ´ÎÓÅ·¾¶ÎÊÌ⣩

SW1#sho ip route vrf ruijie

Routing Table: ruijie

 

Codes:  C - connected, S - static, R - RIP, B - BGP

        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

 

Gateway of last resort is no set

B    4.4.4.4/32 [200/1] via 3.3.3.3, 01:49:02

O    5.5.5.5/32 [110/101] via 10.10.15.5, 01:24:29, GigabitEthernet 0/1

C    10.10.15.0/24 is directly connected, GigabitEthernet 0/0

C    10.10.15.1/32 is local host.

O    10.10.25.0/24 [110/2] via 10.10.15.5, 01:24:29, GigabitEthernet 0/1

B    20.20.34.0/24 [200/0] via 3.3.3.3, 01:49:02

 

SW2# sho ip route vrf ruijie

Routing Table: ruijie

 

Codes:  C - connected, S - static, R - RIP, B - BGP

        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

 

Gateway of last resort is no set

B    4.4.4.4/32 [200/1] via 3.3.3.3, 02:05:14

O    5.5.5.5/32 [110/101] via 10.10.25.5, 01:27:37, GigabitEthernet 0/1

O    10.10.15.0/24 [110/2] via 10.10.25.5, 02:29:57, GigabitEthernet 0/1

C    10.10.25.0/24 is directly connected, GigabitEthernet 0/0

C    10.10.25.2/32 is local host.

B    20.20.34.0/24 [200/0] via 3.3.3.3, 02:05:14

C    22.22.22.22/32 is local host.

ͨ¹ýshow ip route ²é¿´SW4/SW5·ÓÉ±í£¬È·ÈÏѧϰµ½µÄ˽Íø·ÓÉΪO IA£¨Èç¹ûûÓÐOSPF-VPN¹¦ÄÜ£¬ÄÇôBGPÖØ·¢²¼µ½OSPFºó£¬OSPF·ÓÉÓ¦¸ÃÊÇ OE2£©

SW4#sho ip route

 

Codes:  C - connected, S - static, R - RIP, B - BGP

        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

 

Gateway of last resort is no set

C    4.4.4.4/32 is local host.

O IA 5.5.5.5/32 [110/102] via 20.20.34.3, 00:39:15, GigabitEthernet 0/3

O IA 10.10.15.0/24 [110/2] via 20.20.34.3, 00:39:15, GigabitEthernet 0/3

O IA 10.10.25.0/24 [110/2] via 20.20.34.3, 00:39:15, GigabitEthernet 0/3

C    20.20.34.0/24 is directly connected, FastEthernet 0/0

C    20.20.34.4/32 is local host.

 

SW5#sho ip route

 

Codes:  C - connected, S - static, R - RIP, B - BGP

        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

 

Gateway of last resort is no set

O IA 4.4.4.4/32 [110/2] via 10.10.15.1, 00:39:14, GigabitEthernet 0/1

                [110/2] via 10.10.25.2, 00:39:14, GigabitEthernet 0/2

C    5.5.5.5/32 is local host.

C    10.10.15.0/24 is directly connected, GigabitEthernet 0/1

C    10.10.15.5/32 is local host.

C    10.10.25.0/24 is directly connected, GigabitEthernet 0/2

C    10.10.25.5/32 is local host.

O E2 20.20.34.0/24 [110/1] via 10.10.15.1, 01:21:20, GigabitEthernet 0/1

                   [110/1] via 10.10.25.2, 01:21:20, GigabitEthernet 0/2

ͨ¹ýshow ip ospf da su²é¿´SW1/SW2µÄOSPFÊý¾Ý¿â£¬È·ÈÏÊÕµ½±Ë´Ëͨ¸æµÄÕë¶Ô˽Íø4.4.4.4µÄ3ÀàLSA£¬ÇÒDNÖÃλ

SW1#sho ip os database summary

 

            OSPF Router with ID (10.10.15.1) (Process ID 1)

 

                Summary Link States (Area 0.0.0.0)

 

  LS age: 1309

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: summary-LSA

  Link State ID: 4.4.4.4 (summary Network Number)

  Advertising Router: 10.10.15.1

  LS Seq Number: 80000003

  Checksum: 0x178e

  Length: 28

  Network Mask: /32

        TOS: 0  Metric: 1

 

  LS age: 130

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: summary-LSA

  Link State ID: 4.4.4.4 (summary Network Number)

  Advertising Router: 22.22.22.22

  LS Seq Number: 80000003

  Checksum: 0x9ad6

  Length: 28

  Network Mask: /32

        TOS: 0  Metric: 1

 

SW2#sho ip os da summary

 

            OSPF Router with ID (22.22.22.22) (Process ID 1)

 

                Summary Link States (Area 0.0.0.0)

 

  LS age: 88

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: summary-LSA

  Link State ID: 4.4.4.4 (summary Network Number)

  Advertising Router: 10.10.15.1

  LS Seq Number: 80000004

  Checksum: 0x158f

  Length: 28

  Network Mask: /32

        TOS: 0  Metric: 1

 

  LS age: 585

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: summary-LSA

  Link State ID: 4.4.4.4 (summary Network Number)

  Advertising Router: 22.22.22.22

  LS Seq Number: 80000003

  Checksum: 0x9ad6

  Length: 28

  Network Mask: /32

        TOS: 0  Metric: 1

 

ͨ¹ýÒÔÉÏÐÅÏ¢ÑéÖ¤£¬ÔÚDOMAIN-IDÒ»ÖÂÇé¿öÏ£¬PE½«MBGP·ÓÉÖØ·¢²¼¸øOSPFʱ£¬»¹Ô­³ÉÁË3ÀàLSA£¬²¢ÇÒ¸Ã3ÀàLSA µÄDNλÖÃλ£¬È·±£ÁËCEË«¹éÊôÇé¿öϲ»»á²úÉú´ÎÓÅ·¾¶»ò·ÓÉ»·Â·¡£

3¡¢Domain-id²»Ò»ÖÂÇé¿öϵÄOSPF-VPN£º

ÐÞ¸ÄSW3µÄdomain-idΪ2.2.2.2£¬Ê¹ÆäÓëSW1/SW2µÄdomain-id²»Ò»Ö¡£

ͨ¹ýshow ip route vrf ruijie²é¿´SW1/SW2µÄ·ÓÉ±í£¬È·ÈÏ4.4.4.4µÄ·ÓÉΪB¶ø²»ÊÇO E2£º

SW1#sho ip route vrf ruijie

Routing Table: ruijie

 

Codes:  C - connected, S - static, R - RIP, B - BGP

        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

 

Gateway of last resort is no set

B    4.4.4.4/32 [200/1] via 3.3.3.3, 00:33:41

O    5.5.5.5/32 [110/101] via 10.10.15.5, 03:24:53, GigabitEthernet 0/1

C    10.10.15.0/24 is directly connected, GigabitEthernet 0/0

C    10.10.15.1/32 is local host.

O    10.10.25.0/24 [110/2] via 10.10.15.5, 00:34:32, GigabitEthernet 0/1

B    20.20.34.0/24 [200/0] via 3.3.3.3, 00:48:59

 

SW2#sho ip route vrf ruijie

Routing Table: ruijie

 

Codes:  C - connected, S - static, R - RIP, B - BGP

        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

 

Gateway of last resort is no set

B    4.4.4.4/32 [200/1] via 3.3.3.3, 00:34:04

O    5.5.5.5/32 [110/101] via 10.10.25.5, 00:34:06, GigabitEthernet 0/1

O    10.10.15.0/24 [110/2] via 10.10.25.5, 00:34:06, GigabitEthernet 0/1

C    10.10.25.0/24 is directly connected, GigabitEthernet 0/1

C    10.10.25.2/32 is local host.

B    20.20.34.0/24 [200/0] via 3.3.3.3, 00:49:15

ͨ¹ýshow ip route ²é¿´SW5/SW4·ÓÉ±í£¬È·ÈÏѧϰµ½µÄ˽Íø·ÓÉΪO E2£º

SW4#sho ip route

 

Codes:  C - connected, S - static, R - RIP, B - BGP

        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

 

Gateway of last resort is no set

C    4.4.4.4/32 is local host.

O E2 5.5.5.5/32 [110/101] via 20.20.34.3, 00:36:16, GigabitEthernet 0/3

O E2 10.10.15.0/24 [110/1] via 20.20.34.3, 00:36:16, GigabitEthernet 0/3

O E2 10.10.25.0/24 [110/1] via 20.20.34.3, 00:36:16, GigabitEthernet 0/3

C    20.20.34.0/24 is directly connected, GigabitEthernet 0/3

C    20.20.34.4/32 is local host.

 

SW5#sho ip route

 

Codes:  C - connected, S - static, R - RIP, B - BGP

        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

 

Gateway of last resort is no set

O E2 4.4.4.4/32 [110/1] via 10.10.25.2, 00:36:28, GigabitEthernet 0/2

                [110/1] via 10.10.15.1, 00:36:28, GigabitEthernet 0/1

C    5.5.5.5/32 is local host.

C    10.10.15.0/24 is directly connected, GigabitEthernet 0/1

C    10.10.15.5/32 is local host.

C    10.10.25.0/24 is directly connected, GigabitEthernet 0/2

C    10.10.25.5/32 is local host.

O E2 20.20.34.0/24 [110/1] via 10.10.15.1, 00:36:32, GigabitEthernet 0/1

                   [110/1] via 10.10.25.2, 00:36:32, GigabitEthernet 0/2

 

ͨ¹ýshow ip ospf da ex ²é¿´SW1/SW2µÄOSPFÊý¾Ý¿â£¬È·ÈÏÊÕµ½±Ë´Ëͨ¸æµÄÕë¶Ô˽Íø4.4.4.4µÄ5ÀàLSA£¬ÇÒDNÖÃλ£º

SW1#  sho ip ospf da external

 

            OSPF Router with ID (10.10.15.1) (Process ID 1)

 

                AS External Link States

 

  LS age: 151

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: AS-external-LSA

  Link State ID: 4.4.4.4 (External Network Number)

  Advertising Router: 10.10.15.1

  LS Seq Number: 80000002

  Checksum: 0xa278

  Length: 36

  Network Mask: /32

        Metric Type: 2 (Larger than any link state path)

        TOS: 0

        Metric: 1

        Forward Address: 0.0.0.0

        External Route Tag: 1

 

  LS age: 173

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: AS-external-LSA

  Link State ID: 4.4.4.4 (External Network Number)

  Advertising Router: 22.22.22.22

  LS Seq Number: 80000002

  Checksum: 0x26c0

  Length: 36

  Network Mask: /32

        Metric Type: 2 (Larger than any link state path)

        TOS: 0

        Metric: 1

        Forward Address: 0.0.0.0

        External Route Tag: 1

 

  LS age: 1111

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: AS-external-LSA

  Link State ID: 20.20.34.0 (External Network Number)

  Advertising Router: 10.10.15.1

  LS Seq Number: 80000002

  Checksum: 0xedf2

  Length: 36

  Network Mask: /24

        Metric Type: 2 (Larger than any link state path)

        TOS: 0

        Metric: 1

        Forward Address: 0.0.0.0

        External Route Tag: 1

 

  LS age: 173

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: AS-external-LSA

  Link State ID: 20.20.34.0 (External Network Number)

  Advertising Router: 22.22.22.22

  LS Seq Number: 80000002

  Checksum: 0x713b

  Length: 36

  Network Mask: /24

        Metric Type: 2 (Larger than any link state path)

        TOS: 0

        Metric: 1

        Forward Address: 0.0.0.0

        External Route Tag: 1

 

Ìرð×¢Òâµ½ÒÔÉϺìÉ«²¿·ÖLSA£º¸ÃÌõ·ÓÉÊÇÓÉSW3 µÄVRF BGP ͨ¹ýnetworkÃüÁîÒýÈëµÄÖ±Á¬Â·ÓÉ£¬¸Ã·Óɲ»ÊÇÓÉOSPFÒýÈëµ½BGPµÄ£¬ÄÇôÕâÀïÒ²²»»áÉæ¼°µ½OSPF VPN²Å¶Ô£¿ÄÇôÕâÀïΪʲôDNλ»áÖÃλÄØ£¿

ͨ¹ýsho ip bgp vrf ruijie 20.20.34.0²é¿´ÊÇ·ñЯ´øOSPFµÄÀ©Õ¹ÊôÐÔ£º

SW1#sho ip bgp vrf ruijie 20.20.34.0

BGP routing table entry for 20.20.34.0/24

Paths: (1 available, best #1, table Default-IP-Routing-Table)

  Not advertised to any peer

  Local

    3.3.3.3 from 3.3.3.3 (3.3.3.3)

      Origin IGP, metric 0, localpref 100, valid, internal, best

      Extended Community: RT:1:1  //¿ÉÒÔ¿´µ½£¬²»Ð¯´øOSPFÀ©Õ¹ÊôÐÔ

      mpls labels in/out nolabel/1024

      Last update: Fri Mar 18 10:18:25 2011

½«SW2µÄG0/1¿Úshut£¬¶Ï¿ªÓëSW3µÄL3VPN£¬¹Û²ìSW2µÄVRF·ÓɱíÊÇ·ñ¼ÓÔØ20.20.34.0ÕâÌõ·ÓÉ

SW2#sho ip ospf da external

            OSPF Router with ID (22.22.22.22) (Process ID 1)

 

                AS External Link States

 

  LS age: 639

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: AS-external-LSA

  Link State ID: 4.4.4.4 (External Network Number)

  Advertising Router: 10.10.15.1

  LS Seq Number: 80000003

  Checksum: 0xa079

  Length: 36

  Network Mask: /32

        Metric Type: 2 (Larger than any link state path)

        TOS: 0

        Metric: 1

        Forward Address: 0.0.0.0

        External Route Tag: 1

 

  LS age: 1599

  Options: 0x82 (DN|-|-|-|-|-|E|-)

  LS Type: AS-external-LSA

  Link State ID: 20.20.34.0 (External Network Number)

  Advertising Router: 10.10.15.1

  LS Seq Number: 80000003

  Checksum: 0xebf3

  Length: 36

  Network Mask: /24

        Metric Type: 2 (Larger than any link state path)

        TOS: 0

        Metric: 1

        Forward Address: 0.0.0.0

        External Route Tag: 1

//¿ÉÒÔ¿´µ½£¬ÔÚSW2µÄOSPF Êý¾Ý¿âÖУ¬ÒÀÈ»ÊÕµ½ÁËÀ´×ÔSW1ͨ¸æµÄ20.20.34.0Íⲿ·ÓÉ

 

SW2#sho ip route vrf ruijie

Routing Table: ruijie

 

Codes:  C - connected, S - static, R - RIP, B - BGP

        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

 

Gateway of last resort is no set

O    5.5.5.5/32 [110/101] via 10.10.25.5, 01:13:41, GigabitEthernet 0/0

O    10.10.15.0/24 [110/2] via 10.10.25.5, 01:13:41, GigabitEthernet 0/0

C    10.10.25.0/24 is directly connected, GigabitEthernet 0/0

C    10.10.25.2/32 is local host.

//ÓÉÓÚDNÖÃ룬ËùÒÔûÓÐ20.20.34.0ûÓмÓÔؽø·Óɱí

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