RE: NSSA and Virtual Link Again

From: Wei Man (mandraw1@xxxxxxxxx)
Date: Tue May 15 2001 - 03:00:12 GMT-3


   
Here it is

R7#sh ip ospf database nssa

       OSPF Router with ID (217.1.7.1) (Process ID 10)

                Type-7 AS External Link States (Area
55)

  LS age: 1771
  Options: (No TOS-capability, No Type 7/5
translation, DC)
  LS Type: AS External Link
  Link State ID: 0.0.0.0 (External Network Number )
  Advertising Router: 217.1.8.1
  LS Seq Number: 80000001
  Checksum: 0x1EAF
  Length: 36
  Network Mask: /0
        Metric Type: 2 (Larger than any link state
path)
        TOS: 0
        Metric: 1
        Forward Address: 0.0.0.0
        External Route Tag: 0

  LS age: 869
  Options: (No TOS-capability, No Type 7/5
translation, DC)
  LS Type: AS External Link
  Link State ID: 160.60.60.0 (External Network Number
)
  Advertising Router: 217.1.7.1
  LS Seq Number: 80000005
  Checksum: 0xD9F8
  Length: 36
  Network Mask: /22
        Metric Type: 1 (Comparable directly to link
state metric)
        TOS: 0
        Metric: 20
        Forward Address: 170.150.7.7
        External Route Tag: 0

R7#
Csc2511-R3#8
[Resuming connection 8 to Csc2620 ... ]

R8>en
R8#sh ip ospf da
R8#sh ip ospf database nssa

       OSPF Router with ID (217.1.8.1) (Process ID 10)

                Type-7 AS External Link States (Area
55)

  LS age: 1781
  Options: (No TOS-capability, No Type 7/5
translation, DC)
  LS Type: AS External Link
  Link State ID: 0.0.0.0 (External Network Number )
  Advertising Router: 217.1.8.1
  LS Seq Number: 80000001
  Checksum: 0x1EAF
  Length: 36
  Network Mask: /0
        Metric Type: 2 (Larger than any link state
path)
        TOS: 0
        Metric: 1
        Forward Address: 0.0.0.0
        External Route Tag: 0

  Routing Bit Set on this LSA
  LS age: 881
  Options: (No TOS-capability, No Type 7/5
translation, DC)
  LS Type: AS External Link
  Link State ID: 160.60.60.0 (External Network Number
)
  Advertising Router: 217.1.7.1
  LS Seq Number: 80000005
  Checksum: 0xD9F8
  Length: 36
  Network Mask: /22
        Metric Type: 1 (Comparable directly to link
state metric)
        TOS: 0
        Metric: 20
        Forward Address: 170.150.7.7
        External Route Tag: 0

R8#

--- Lachlan Kidd <lkidd@netstarnetworks.com> wrote:
> Hi Wei,
> Can you post a 'show ip ospf data nssa' from r7/r8.
> It may help explain
> what is going on
> Regards,
> Lachlan
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com]On Behalf Of
> Wei Man
> Sent: Tuesday, 15 May 2001 3:10:PM
> To: ccielab@groupstudy.com
> Subject: NSSA and Virtual Link Again
>
>
> Hi,
>
> I am running into problem that Type 7 LSA does not
> converted to Type 5 LSA, any idea how to fix this ?
>
>
> here is diagram
>
> R5 (Area 0 with Authentication)
> |
> | Area 5
> |
> R7--------R8
> Link between R7 and R8 is in Area 55
> R7 and R8 is nssa
>
> on R7, I configure nssa with area 55 nssa and I
> redistribute connected interface to OSPF with
> metric-type 1
> on R8, I configure nssa with area 55 nssa
> default-information no-summary
>
> On R7, it be able to see default to R8
> and on R8, it be able to see OSPF Route(N1) to R7
>
> On R8 and R5, I am running virtual link
>
> in R8, area 5 virtual-link (OSPF-ID R5) and
> area 0 authentication message-digest
>
> in R5, area 5 virtual-link (OSPF-ID R8) and
> area 0 authentication message-digest
>
> However, when I do show ip ospf database on R8
> I just see type 7 LSA for injected connected route
> (no
> type 5)
>
> and obviously, it does not propagate to R5
>
> any idea how to translate type 7 LSA to type 5 LSA ?
>
> I check all OSPF virtual-link and it is up and get
> full route and I even reload NSSA ABR, it did not
> help
>
>
> here is config and routing table
>
>
> for R5
>
> R5#sh run
> Building configuration...
>
> Current configuration:
> !
> version 12.1
> service timestamps debug uptime
> service timestamps log uptime
> no service password-encryption
> !
> hostname R5
> !
> !
> !
> !
> !
> !
> ip subnet-zero
> no ip domain-lookup
> !
> cns event-service server
> !
> !
> !
> !
> !
> interface Loopback10
> ip address 170.150.5.5 255.255.255.192
> ip ospf network point-to-point
> !
> interface Loopback100
> ip address 217.1.5.1 255.255.255.0
> !
> interface Serial0
> ip address 170.150.43.5 255.255.255.240
> encapsulation frame-relay
> ip ospf message-digest-key 1 md5 cisco
> ip ospf network broadcast
> ip ospf hello-interval 20
> ip ospf priority 0
> no fair-queue
> frame-relay map ip 170.150.43.3 504 broadcast
> frame-relay map ip 170.150.43.4 504 broadcast
> frame-relay map ip 170.150.43.5 504 broadcast
> frame-relay map ip 170.150.43.6 504 broadcast
> no frame-relay inverse-arp
> frame-relay lmi-type ansi
> !
> interface Serial1
> ip address 170.150.58.5 255.255.255.252
> !
> interface TokenRing0
> no ip address
> shutdown
> !
> interface BRI0
> no ip address
> shutdown
> !
> interface Dialer0
> ip address 170.150.45.5 255.255.255.252
> no cdp enable
> !
> router ospf 10
> area 0 authentication message-digest
> area 0 range 170.150.5.0 255.255.255.192
> area 0 range 170.150.43.0 255.255.255.240
> area 0 range 170.150.45.4 255.255.255.252
> area 5 range 170.150.58.4 255.255.255.252
> area 5 virtual-link 217.1.8.1 message-digest-key 1
> md5 cisco
> area 55 nssa
> network 170.150.5.0 0.0.0.63 area 0
> network 170.150.43.0 0.0.0.15 area 0
> network 170.150.45.4 0.0.0.3 area 0
> network 170.150.58.4 0.0.0.3 area 5
> !
> ip classless
> no ip http server
> !
> !
> alias exec c conf t
> alias exec ir show ip route
> alias exec x show ipx route
> alias exec o show ip ospf
> alias exec e show ip eigrp
> alias exec b show ip bgp
> alias exec ib show ip int brief
> alias exec xb show ipx int brief
> alias exec xs show ipx servers
> alias exec d clear ip route *
> alias exec q clear ip bgp *
> alias exec crs copy run start
> !
> line con 0
> transport input none
> line aux 0
> line vty 0 4
> privilege level 15
> login
> !
> end
>
> R5#sh ip ro
> Codes: C - connected, S - static, I - IGRP, R - RIP,
> M
> - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, 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, E - EGP
> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS
> level-2, ia - IS-IS inter area
> * - candidate default, U - per-user static
> route, o - ODR
> P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> 170.150.0.0/16 is variably subnetted, 15
> subnets,
> 4 masks
> O IA 170.150.60.0/24 [110/65] via 170.150.43.6,
> 00:23:48, Serial0
> C 170.150.58.4/30 is directly connected,
> Serial1
> O IA 170.150.47.0/24 [110/65] via 170.150.43.4,
> 00:23:48, Serial0
> C 170.150.45.4/30 is directly connected,
> Dialer0
>
=== message truncated ===



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