Re: OSPF -NSSA Area type 7 to type 5 translation

yeah thats true... i did give the network command wrong... after that
highest ROUTER-ID does the translation...
Thanking You

Yours Sincerely

Divin Mathew John
divinjohn_at_gmail.com
divin_at_dide3d.com
http://www.dide3d.com
+91 9945430983
+91 9846697191
+974 5008916
PGP PUBLIC KEY BLOCK @ http://www.dide3d.com/divin_Public_PGP_key.txt
Sent from Bangalore, KA, India

On Sat, May 30, 2009 at 10:26 AM, NN Kumar <nagendra.cisco_at_gmail.com> wrote:

> Hi Divin,
>
> From the output you provided, R1 seems to have neighborship with both
> R0(100.100.100.100) and R3(30.30.30.30). But I guess R2 doesnt have
> neighborship with R3. It only have neighborship established with R0.
>
>
> If you see R2' routing table, 3.3.3.3 is Inter-Area route learnt via area0.
>
> Can you check that and let us know?
>
> Regards,
> Nagendra
>
>
> On 5/29/09, Divin Mathew John <divinjohn_at_gmail.com> wrote:
>
>> R1
>> / \
>> / \
>> R0 R3
>> \ /
>> \ /
>> R2
>>
>> R0 Area 0
>> R1 Area 0, Area 1 NSSA
>> R2 Area 0, Area 1 NSSA
>> R3 Area 1 NSSA,ASBR(redistribute connected)
>> I have confugred R1 with RID 11.11.11.11 and R2 with 22.22.22.22, R2 has
>> greater RID so it should do the Type7-Type5 Cnversion. but here in my
>> topologfy R1 is doing the cnversion.
>>
>> This R0's sh ip ospf data external
>> r0#sh ip ospf da external
>>
>> OSPF Router with ID (100.100.100.100) (Process ID 1)
>>
>> Type-5 AS External Link States
>>
>> Delete flag is set for this LSA
>> LS age: MAXAGE(3601)
>> Options: (No TOS-capability, DC)
>> LS Type: AS External Link
>> Link State ID: 30.30.30.0 (External Network Number )
>> *Advertising Router: 11.11.11.11*
>> LS Seq Number: 80000002
>> Checksum: 0x2CF4
>> Length: 36
>> Network Mask: /24
>> Metric Type: 2 (Larger than any link state path)
>> TOS: 0
>> Metric: 16777215
>> Forward Address: 3.3.3.3
>> External Route Tag: 0
>>
>> Here 11.11.11.11 is doing the conversion ...but RFC states that
>> 22.22.22.22 should do the conversion due to higher router ID.!
>>
>> ****************
>> R1*************
>> ****************
>> interface Loopback0
>> ip address 1.1.1.1 255.255.255.0
>> ip ospf network point-to-point
>> !
>> interface Serial0/0
>> ip address 10.1.1.2 255.255.255.252
>> serial restart-delay 0
>> !
>> interface Serial0/1
>> ip address 13.1.1.1 255.255.255.252
>> serial restart-delay 0
>> !
>> interface Serial0/2
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> interface Serial0/3
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> router ospf 1
>> router-id 11.11.11.11
>> log-adjacency-changes
>> area 1 nssa translate type7 suppress-fa
>> network 10.1.1.2 0.0.0.0 area 0
>> network 13.1.1.1 0.0.0.0 area 1
>> !
>>
>> R1#sh ip route
>> Codes: C - connected, S - static, 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
>> i - IS-IS, su - IS-IS summary, 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
>>
>> 1.0.0.0/24 is subnetted, 1 subnets
>> C 1.1.1.0 is directly connected, Loopback0
>> 2.0.0.0/24 is subnetted, 1 subnets
>> O IA 2.2.2.0 [110/129] via 10.1.1.1, 00:00:49, Serial0/0
>> 100.0.0.0/24 is subnetted, 1 subnets
>> O 100.100.100.0 [110/65] via 10.1.1.1, 00:00:49, Serial0/0
>> 3.0.0.0/24 is subnetted, 1 subnets
>> O 3.3.3.0 [110/65] via 13.1.1.2, 00:00:49, Serial0/1
>> 20.0.0.0/30 is subnetted, 1 subnets
>> O 20.1.1.0 [110/128] via 10.1.1.1, 00:00:49, Serial0/0
>> 23.0.0.0/30 is subnetted, 1 subnets
>> O 23.1.1.0 [110/128] via 13.1.1.2, 00:00:49, Serial0/1
>> 10.0.0.0/30 is subnetted, 1 subnets
>> C 10.1.1.0 is directly connected, Serial0/0
>> 13.0.0.0/30 is subnetted, 1 subnets
>> C 13.1.1.0 is directly connected, Serial0/1
>> 30.0.0.0/24 is subnetted, 1 subnets
>> O N2 30.30.30.0 [110/20] via 13.1.1.2, 00:00:49, Serial0/1 R1#sh ip
>> protocols
>> Routing Protocol is "ospf 1"
>> Outgoing update filter list for all interfaces is not set
>> Incoming update filter list for all interfaces is not set
>> Router ID 11.11.11.11
>> It is an area border and autonomous system boundary router
>> Redistributing External Routes from,
>> Number of areas in this router is 2. 1 normal 0 stub 1 nssa
>> Maximum path: 4
>> Routing for Networks:
>> 10.1.1.2 0.0.0.0 area 0
>> 13.1.1.1 0.0.0.0 area 1
>> Reference bandwidth unit is 100 mbps
>> Routing Information Sources:
>> Gateway Distance Last Update
>> 22.22.22.22 110 00:00:53
>> 100.100.100.100 110 00:00:53
>> 30.30.30.30 110 00:00:53
>> Distance: (default is 110)
>> R1#sh ip ospf neighbor
>>
>> Neighbor ID Pri State Dead Time Address Interface
>> 100.100.100.100 0 FULL/ - 00:00:39 10.1.1.1 Serial0/0
>> 30.30.30.30 0 FULL/ - 00:00:39 13.1.1.2 Serial0/1
>>
>> ****************
>> R2*************
>> ****************
>>
>> interface Loopback0
>> ip address 2.2.2.2 255.255.255.0
>> ip ospf network point-to-point
>> !
>> interface Serial0/0
>> ip address 20.1.1.2 255.255.255.252
>> serial restart-delay 0
>> !
>> interface Serial0/1
>> ip address 23.1.1.1 255.255.255.252
>> serial restart-delay 0
>> !
>> interface Serial0/2
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> interface Serial0/3
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> router ospf 1
>> router-id 22.22.22.22
>> log-adjacency-changes
>> area 1 nssa
>> network 2.2.2.2 0.0.0.0 area 1
>> network 20.1.1.2 0.0.0.0 area 0
>> network 23.1.1.2 0.0.0.0 area 1
>> !
>> ip http server
>> ip forward-protocol nd
>> !
>> !
>>
>> R2#sh ip route
>> Codes: C - connected, S - static, 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
>> i - IS-IS, su - IS-IS summary, 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
>>
>> 2.0.0.0/24 is subnetted, 1 subnets
>> C 2.2.2.0 is directly connected, Loopback0
>> 100.0.0.0/24 is subnetted, 1 subnets
>> O 100.100.100.0 [110/65] via 20.1.1.1, 00:01:26, Serial0/0
>> 3.0.0.0/24 is subnetted, 1 subnets
>> O IA 3.3.3.0 [110/193] via 20.1.1.1, 00:01:26, Serial0/0
>> 20.0.0.0/30 is subnetted, 1 subnets
>> C 20.1.1.0 is directly connected, Serial0/0
>> 23.0.0.0/30 is subnetted, 1 subnets
>> C 23.1.1.0 is directly connected, Serial0/1
>> 10.0.0.0/30 is subnetted, 1 subnets
>> O 10.1.1.0 [110/128] via 20.1.1.1, 00:01:26, Serial0/0
>> 13.0.0.0/30 is subnetted, 1 subnets
>> O IA 13.1.1.0 [110/192] via 20.1.1.1, 00:01:27, Serial0/0
>> 30.0.0.0/24 is subnetted, 1 subnets
>> O E2 30.30.30.0 [110/20] via 20.1.1.1, 00:01:17, Serial0/0
>> R2#sh ip protocols
>> Routing Protocol is "ospf 1"
>> Outgoing update filter list for all interfaces is not set
>> Incoming update filter list for all interfaces is not set
>> Router ID 22.22.22.22
>> It is an area border and autonomous system boundary router
>> Redistributing External Routes from,
>> Number of areas in this router is 2. 1 normal 0 stub 1 nssa
>> Maximum path: 4
>> Routing for Networks:
>> 2.2.2.2 0.0.0.0 area 1
>> 20.1.1.2 0.0.0.0 area 0
>> 23.1.1.2 0.0.0.0 area 1
>> Reference bandwidth unit is 100 mbps
>> Routing Information Sources:
>> Gateway Distance Last Update
>> 11.11.11.11 110 00:01:25
>> 100.100.100.100 110 00:01:35
>> Distance: (default is 110)
>> R2#sh ip ospf neighbor
>>
>> Neighbor ID Pri State Dead Time Address Interface
>> 100.100.100.100 0 FULL/ - 00:00:30 20.1.1.1 Serial0/0
>>
>> ****************
>> R3*************
>> ****************
>>
>> !
>> interface Serial0/0
>> ip address 13.1.1.2 255.255.255.252
>> serial restart-delay 0
>> !
>> interface Serial0/1
>> ip address 23.1.1.2 255.255.255.252
>> serial restart-delay 0
>> !
>> interface Serial0/2
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> interface Serial0/3
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> router ospf 1
>> log-adjacency-changes
>> area 1 nssa
>> redistribute connected subnets
>> network 3.3.3.3 0.0.0.0 area 1
>> network 13.1.1.2 0.0.0.0 area 1
>> network 23.1.1.2 0.0.0.0 area 1
>> !
>> ip http server
>> ip forward-protocol nd
>> !
>> !
>>
>> R3#sh ip route
>> Codes: C - connected, S - static, 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
>> i - IS-IS, su - IS-IS summary, 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
>>
>> 2.0.0.0/24 is subnetted, 1 subnets
>> O IA 2.2.2.0 [110/193] via 13.1.1.1, 00:02:00, Serial0/0
>> 100.0.0.0/24 is subnetted, 1 subnets
>> O IA 100.100.100.0 [110/129] via 13.1.1.1, 00:02:00, Serial0/0
>> 3.0.0.0/24 is subnetted, 1 subnets
>> C 3.3.3.0 is directly connected, Loopback0
>> 20.0.0.0/30 is subnetted, 1 subnets
>> O IA 20.1.1.0 [110/192] via 13.1.1.1, 00:02:00, Serial0/0
>> 23.0.0.0/30 is subnetted, 1 subnets
>> C 23.1.1.0 is directly connected, Serial0/1
>> 10.0.0.0/30 is subnetted, 1 subnets
>> O IA 10.1.1.0 [110/128] via 13.1.1.1, 00:02:00, Serial0/0
>> 13.0.0.0/30 is subnetted, 1 subnets
>> C 13.1.1.0 is directly connected, Serial0/0
>> 30.0.0.0/24 is subnetted, 1 subnets
>> C 30.30.30.0 is directly connected, Loopback3
>> redistributiong connected into NSSA at R3
>> R1,R2 Area 0and Area 1
>> R0 area 0
>> R3 area 1
>> area 1 NSSA
>>
>> Thanking You
>>
>> Yours Sincerely
>>
>> Divin Mathew John
>> divinjohn_at_gmail.com
>> divin_at_dide3d.com
>> http://www.dide3d.com
>> +91 9945430983
>> +91 9846697191
>> +974 5008916
>> PGP PUBLIC KEY BLOCK @ http://www.dide3d.com/divin_Public_PGP_key.txt
>> Sent from Bangalore, KA, India

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Received on Sat May 30 2009 - 13:11:34 ART