OSPF NSSA Problem
Hey guys, shouldn't the 172 network configured on R3 show on R1's routing table?
R1#sho ip route
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
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
C 10.1.1.0/24 is directly connected, Loopback1
O 10.1.2.1/32 [110/2] via 10.1.12.2, 00:14:10, FastEthernet0/0
O IA 10.1.3.1/32 [110/3] via 10.1.12.2, 00:14:10, FastEthernet0/0
C 10.1.12.0/24 is directly connected, FastEthernet0/0
O IA 10.1.23.0/24 [110/2] via 10.1.12.2, 00:14:10, FastEthernet0/0
R1#
R1#show run Building configuration... Current configuration : 604 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname R1 ! ! ! ! ! ! ! ! ! ! ip name-server 0.0.0.0 ! ! ! ! ! ! interface Loopback1 ip address 10.1.1.1 255.255.255.0 ! interface FastEthernet0/0 ip address 10.1.12.1 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 no ip address duplex auto speed auto shutdown ! router ospf 1 log-adjacency-changes network 10.1.12.0 0.0.0.255 area 0 network 10.1.1.0 0.0.0.255 area 0 ! ip classless ! ! ! ! ! ! ! ! ! line con 0 line vty 0 4 login ! ! ! end R1#show run Building configuration... Current configuration : 604 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname R1 ! ! ! ! ! ! ! ! ! ! ip name-server 0.0.0.0 ! ! ! ! ! ! interface Loopback1 ip address 10.1.1.1 255.255.255.0 ! interface FastEthernet0/0 ip address 10.1.12.1 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 no ip address duplex auto speed auto shutdown ! router ospf 1 log-adjacency-changes network 10.1.12.0 0.0.0.255 area 0 network 10.1.1.0 0.0.0.255 area 0 ! ip classless ! ! ! ! ! ! ! ! ! line con 0 line vty 0 4 login ! ! ! end R2#sho run Building configuration... Current configuration : 643 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname R2 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback2 ip address 10.1.2.1 255.255.255.0 ! interface FastEthernet0/0 ip address 10.1.12.2 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 ip address 10.1.23.2 255.255.255.0 duplex auto speed auto ! router ospf 1 log-adjacency-changes area 23 nssa network 10.1.12.0 0.0.0.255 area 0 network 10.1.2.0 0.0.0.255 area 0 network 10.1.23.0 0.0.0.255 area 23 ! ip classless ! ! ! ! ! ! ! ! ! line con 0 line vty 0 4 login ! ! ! end R2#sho run Building configuration... Current configuration : 643 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname R2 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback2 ip address 10.1.2.1 255.255.255.0 ! interface FastEthernet0/0 ip address 10.1.12.2 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 ip address 10.1.23.2 255.255.255.0 duplex auto speed auto ! router ospf 1 log-adjacency-changes area 23 nssa network 10.1.12.0 0.0.0.255 area 0 network 10.1.2.0 0.0.0.255 area 0 network 10.1.23.0 0.0.0.255 area 23 ! ip classless ! ! ! ! ! ! ! ! ! line con 0 line vty 0 4 login ! ! ! end R3#show run Building configuration... Current configuration : 715 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname R3 ! ! ! ! ! ! ! ! ! ! ip name-server 0.0.0.0 ! ! ! ! ! ! interface Loopback3 ip address 10.1.3.1 255.255.255.0 ! interface Loopback20 ip address 172.20.200.1 255.255.255.0 ! interface FastEthernet0/0 no ip address duplex auto speed auto shutdown ! interface FastEthernet0/1 ip address 10.1.23.3 255.255.255.0 duplex auto speed auto ! router ospf 1 log-adjacency-changes area 23 nssa redistribute connected subnets network 10.1.23.0 0.0.0.255 area 23 network 10.1.3.0 0.0.0.255 area 23 ! ip classless ! ! ! ! ! ! ! ! ! line con 0 line vty 0 4 login ! ! ! end
-Daniel
Comments
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Daniel333
Member Posts: 2,077 ■■■■■■□□□□
Why is it that I can spend an hour staring at something and not get it, yet once I post it thus making a fool of myself I get it a minute later.
For the record the area 23 nssa needed the "no-summ" on the the, since it' can't summerize the 172.x.x.x in to the 10.x.x.x....-Daniel -
BennyLava
Member Posts: 60 ■■□□□□□□□□
Are you sure you didn't change something else also? Adding 'no-summary' on the ABR just stops type-3 LSAs from being sent into area 23, it shouldn't affect R1 at all. Your configs that you posted look fine to me as is. -
BennyLava
Member Posts: 60 ■■□□□□□□□□
I just pasted your configs in, it seems to work fine for me:
R1(config)#do sh ip rou
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
172.20.0.0/24 is subnetted, 1 subnets
O E2 172.20.200.0 [110/20] via 10.1.12.2, 00:00:04, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
C 10.1.12.0/24 is directly connected, FastEthernet0/0
O 10.1.2.1/32 [110/2] via 10.1.12.2, 00:00:04, FastEthernet0/0
O IA 10.1.3.1/32 [110/3] via 10.1.12.2, 00:00:04, FastEthernet0/0
C 10.1.1.0/24 is directly connected, Loopback1
O IA 10.1.23.0/24 [110/2] via 10.1.12.2, 00:00:04, FastEthernet0/0
R2#sh ip rou
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
172.20.0.0/24 is subnetted, 1 subnets
O N2 172.20.200.0 [110/20] via 10.1.23.3, 00:00:20, FastEthernet0/1
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
C 10.1.12.0/24 is directly connected, FastEthernet0/0
O 10.1.3.1/32 [110/2] via 10.1.23.3, 00:00:20, FastEthernet0/1
C 10.1.2.0/24 is directly connected, Loopback2
O 10.1.1.1/32 [110/2] via 10.1.12.1, 00:00:10, FastEthernet0/0
C 10.1.23.0/24 is directly connected, FastEthernet0/1
R3(config)#do sh ip rou
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
172.20.0.0/24 is subnetted, 1 subnets
C 172.20.200.0 is directly connected, Loopback20
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
O IA 10.1.12.0/24 [110/2] via 10.1.23.2, 00:00:17, FastEthernet0/1
C 10.1.3.0/24 is directly connected, Loopback3
O IA 10.1.2.1/32 [110/2] via 10.1.23.2, 00:00:17, FastEthernet0/1
O IA 10.1.1.1/32 [110/3] via 10.1.23.2, 00:00:17, FastEthernet0/1
C 10.1.23.0/24 is directly connected, FastEthernet0/1 -
EdTheLad
Member Posts: 2,111 ■■■■□□□□□□
For the record the area 23 nssa needed the "no-summ" on the the, since it' can't summerize the 172.x.x.x in to the 10.x.x.x....
No-summary on R2 would just turn area 23 into a NSSA totally stubby area.I love this terminology!Networking, sometimes i love it, mostly i hate it.Its all about the $$$$ -
Daniel333
Member Posts: 2,077 ■■■■■■□□□□
Given that it worked for you, I am thinking Packet Tracer is at fault. It's not the first time it's acted weird. Ill fire up some real router tomorrow and try it out.
But from your output it seems like even without the no-summ on there it still distributed the 172 network, and summerized it?-Daniel -
kryolla
Member Posts: 785
Given that it worked for you, I am thinking Packet Tracer is at fault. It's not the first time it's acted weird. Ill fire up some real router tomorrow and try it out.
But from your output it seems like even without the no-summ on there it still distributed the 172 network, and summerized it?
I think you are confused what no-summary means. All it means is no LSA-3 will be going INTO the area it is not summarizing anything. In order to summarize you need area range command or for external it is summary-addressStudying for CCIE and drinking Home Brew -
Xenz
Member Posts: 140
Given that it worked for you, I am thinking Packet Tracer is at fault. It's not the first time it's acted weird. Ill fire up some real router tomorrow and try it out.
But from your output it seems like even without the no-summ on there it still distributed the 172 network, and summerized it?
Packet tracer for CCNP stuff? No way to use dynamips/GNS? Packet tracer was shifty enough covering some of the late CCNA topics. I can't imagine trying to use it for CCNP studies.Currently working on:
CCNP, 70-620 Vista 70-290 Server 2003
Packet Tracer activities and ramblings on my blog:
http://www.sbntech.info -
Daniel333
Member Posts: 2,077 ■■■■■■□□□□
No doubt about that! I think messing with this fancy Cisco stuff was a mistake.I think you are confused
1ghz laptop, GNS3 doesn't have a chanceXenz wrote:Packet tracer for CCNP stuff? No way to use dynamips/GNS? Packet tracer was shifty enough covering some of the late CCNA topics. I can't imagine trying to use it for CCNP studies.
-Daniel -
kryolla
Member Posts: 785
No doubt about that! I think messing with this fancy Cisco stuff was a mistake.
I dont think its a mistake you just have to keep on working on it and it will all make senseStudying for CCIE and drinking Home Brew -
Bosefus
Member Posts: 67 ■■□□□□□□□□
Given that it worked for you, I am thinking Packet Tracer is at fault. It's not the first time it's acted weird.
I second this. Packet tracer does some funky stuff sometimes.Working on CCNP, passed BSCI, Currently working on ONT.
