目次
概要
広域イーサネットで相互接続している4拠点の社内ネットワークにおいて、OSPFによるルーティングを行う演習です。Part5では、設定ミスの切り分けと修正のトラブルシューティングです。
Part1:OSPFの基本設定
Part2:デフォルトルートの生成
Part3:スタブエリア
Part4:ルート集約
Part5:トラブルシューティング
ネットワーク構成
設定条件
Part1:OSPFの基本設定
- 図 ルーティングプロトコルの構成のように、OSPFおよびRIPv2の設定を行います。OSPFルータのルータIDは、YY.YY.YY.YY(YY:ルータ番号)とします。また、将来的なギガビットイーサネット導入に対応できるように設定します。
- 不要なインタフェースにはルーティングプロトコルのパケットを送信しないようにします。
- R42では、RIPv2のルートをOSPFへ再配送します。また、R42はR43へRIPv2でデフォルトルートをアドバタイズします。
- 10.0.0.0/24上では、R11がDR、R12がBDRとなるようにします。また、MD5によるネイバー認証を行い、ネイバーの障害検出を4秒以内にできるようにします。
Part2デフォルトルートの生成
- R13、R14でインターネットへルーティングするためのデフォルトルートをスタティックで設定します。
- R13、R14でOSPFドメインにデフォルトルートを生成します。インターネットへのルーティングはR13を優先します。
Part3:スタブエリアの設定
- エリア2、エリア4にはLSAタイプ5をアドバタイズしないように設定します。エリア4にはインターネットへの接続性を確保するために、デフォルトルートをアドバタイズできるようにします。
- エリア3のLSDBのサイズが最も小さくなるように設定します。
Part4:ルート集約
- エリア1、エリア2、エリア3、エリア4のネットワークアドレスを集約してバックボーンエリアにアドバタイズします。
- RIPv2ドメインのルートを集約してOSPFドメインへアドバタイズします。
初期設定
「演習:実践的なOSPFルーティング Part1」から「演習:実践的なOSPFルーティング Part4」の設定を行っています。しかし、設定ミスが5つあります。設定ミスによるトラブルの症状は次のとおりです。
- R11 F0/0上でOSPFネイバーを確立できません。
- R13がデフォルトルートをアドバタイズしていません。
- R23が正常にOSPFネイバーを確立できません。
- R31が正常にOSPFネイバーを確立できません。
- RIPドメインのネットワークへの通信ができません。
すべての設定ミスを修正して、正常にOSPFルーティングできるようにしてください。
R11 Initial Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R11 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.11.11 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.11 255.255.255.0 ip ospf authentication message-digest ip ospf message-digest-key 1 md5 cisco ip ospf priority 255 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.1.1.11 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 11.11.11.11 log-adjacency-changes auto-cost reference-bandwidth 3000 area 1 range 10.1.0.0 255.255.0.0 passive-interface Loopback0 network 10.0.0.0 0.0.0.255 area 0 network 10.1.0.0 0.0.255.255 area 1 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R12 Initial Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R12 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.12.12 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.12 255.255.255.0 ip ospf authentication message-digest ip ospf message-digest-key 1 md5 cisco ip ospf hello-interval 1 ip ospf priority 100 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.1.1.12 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 12.12.12.12 log-adjacency-changes auto-cost reference-bandwidth 3000 area 1 range 10.1.0.0 255.255.0.0 passive-interface Loopback0 passive-interface Fa0/0 network 10.0.0.0 0.0.0.255 area 0 network 10.1.0.0 0.0.255.255 area 1 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R13 Initial Configuration (Click)
! ! ! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R13 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.13.13 255.255.255.255 ! interface FastEthernet0/0 ip address 10.1.2.13 255.255.255.0 ip nat inside ip virtual-reassembly duplex auto speed auto ! interface FastEthernet1/0 ip address 10.1.1.13 255.255.255.0 ip nat inside ip virtual-reassembly duplex auto speed auto ! interface Serial2/0 ip address 100.1.0.1 255.255.255.252 ip nat outside ip virtual-reassembly serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 13.13.13.13 log-adjacency-changes auto-cost reference-bandwidth 3000 passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.1.0.0 0.0.255.255 area 1 default-information originate metric-type 1 ! ip http server ip forward-protocol nd ! ! ip nat inside source list 1 interface Serial2/0 overload ! access-list 1 permit 10.0.0.0 0.255.255.255 access-list 1 permit 172.16.0.0 0.0.255.255 ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R14 Initial Configuration (Click)
! ! ! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R14 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.14.14 255.255.255.255 ! interface FastEthernet0/0 ip address 10.1.3.14 255.255.255.0 ip nat inside ip virtual-reassembly duplex auto speed auto ! interface FastEthernet1/0 ip address 10.1.1.14 255.255.255.0 ip ospf 1 area 0 ip nat inside ip virtual-reassembly duplex auto speed auto ! interface Serial2/0 ip address 100.1.0.5 255.255.255.252 ip nat outside ip virtual-reassembly serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 14.14.14.14 log-adjacency-changes auto-cost reference-bandwidth 3000 passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.1.0.0 0.0.255.255 area 1 default-information originate ! ip http server ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 100.1.0.6 ! ! ip nat inside source list 1 interface Serial2/0 overload ! access-list 1 permit 10.0.0.0 0.255.255.255 access-list 1 permit 172.16.0.0 0.0.255.255 ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R21 Initial Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R21 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.2.21.21 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.21 255.255.255.0 ip ospf authentication message-digest ip ospf message-digest-key 1 md5 cisco ip ospf hello-interval 1 ip ospf priority 0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.2.1.21 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 21.21.21.21 log-adjacency-changes auto-cost reference-bandwidth 3000 area 2 stub passive-interface Loopback0 network 10.0.0.0 0.0.0.255 area 0 network 10.2.0.0 0.0.255.255 area 2 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R22 Initial Configuration (Click)
! ! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R22 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.2.22.22 255.255.255.255 ! interface FastEthernet0/0 ip address 10.2.2.22 255.255.255.0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.2.1.22 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 22.22.22.22 log-adjacency-changes auto-cost reference-bandwidth 3000 area 2 stub passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.2.0.0 0.0.0.255 area 2 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R23 Initial Configuration (Click)
! ! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R23 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.2.23.23 255.255.255.255 ! interface FastEthernet0/0 ip address 10.2.3.23 255.255.255.0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.2.1.23 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 23.23.23.23 log-adjacency-changes auto-cost reference-bandwidth 3000 passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.2.0.0 0.0.255.255 area 2 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R31 Initial Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R31 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.3.31.31 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.31 255.255.255.0 ip ospf message-digest-key 1 md5 cisco ip ospf hello-interval 1 ip ospf priority 0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.3.1.31 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 23.23.23.23 log-adjacency-changes auto-cost reference-bandwidth 3000 area 3 stub no-summary area 3 range 10.3.0.0 255.255.0.0 passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.0.0.0 0.0.0.255 area 0 network 10.2.0.0 0.0.255.255 area 2 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R41 Initial Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R41 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.4.41.41 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.41 255.255.255.0 ip ospf authentication ip ospf message-digest-key 1 md5 cisco ip ospf hello-interval 1 ip ospf priority 0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.4.1.41 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 41.41.41.41 log-adjacency-changes auto-cost reference-bandwidth 3000 area 4 nssa default-information-originate area 4 range 10.4.0.0 255.255.0.0 passive-interface Loopback0 network 10.0.0.0 0.0.0.255 area 0 network 10.4.0.0 0.0.255.255 area 4 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R42 Initial Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R42 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.4.42.42 255.255.255.0 ! interface FastEthernet0/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet1/0 ip address 10.4.1.42 255.255.255.0 duplex auto speed auto ! interface Serial2/0 ip address 172.16.0.42 255.255.255.0 serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 42.42.42.42 log-adjacency-changes auto-cost reference-bandwidth 3000 area 4 nssa summary-address 172.16.0.0 255.255.252.0 redistribute rip passive-interface Loopback0 network 10.4.0.0 0.0.255.255 area 4 ! router rip version 2 network 172.16.0.0 default-information originate ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R43 Initial Configuration (Click)
! ! ! ! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R43 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.4.43.43 255.255.255.255 ! interface Loopback1 ip address 172.16.2.43 255.255.255.0 secondary ip address 172.16.1.43 255.255.255.0 ! interface FastEthernet0/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet1/0 no ip address shutdown duplex auto speed auto ! interface Serial2/0 ip address 172.16.0.43 255.255.255.0 serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router rip version 2 passive-interface default no passive-interface Serial2/0 network 172.16.0.0 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
ISP Initial Configuration (Click)
! ! ! ! ! ! ! ! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname ISP ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 100.1.1.1 255.255.255.0 ! interface FastEthernet0/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet1/0 no ip address shutdown duplex auto speed auto ! interface Serial2/0 ip address 100.1.0.2 255.255.255.252 serial restart-delay 0 ! interface Serial2/1 ip address 100.1.0.6 255.255.255.252 serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
Part5:トラブルシューティング 切り分けと修正
1. Hello/Deadインターバルのミスマッチ
R11 FastEtehrnet0/0のHelloインターバルが他のルータと一致していないため、ネイバーを確立することができません。
切り分け
R11 切り分け
R11#debug ip ospf hello OSPF hello events debugging is on R11# *Mar 1 00:03:18.567: OSPF: Rcv hello from 14.14.14.14 area 1 from FastEthernet1/0 10.1.1.14 *Mar 1 00:03:18.571: OSPF: End of hello processing *Mar 1 00:03:18.611: OSPF: Rcv hello from 21.21.21.21 area 0 from FastEthernet0/0 10.0.0.21 *Mar 1 00:03:18.615: OSPF: Mismatched hello parameters from 10.0.0.21 *Mar 1 00:03:18.615: OSPF: Dead R 4 C 40, Hello R 1 C 10 Mask R 255.255.255.0 C 255.255.255.0 -- omitted --
設定の修正
R11 設定の修正
interface FastEthernet0/0 ip ospf hello-interval 1
2.デフォルトルート(スタティック)の設定漏れ
R13のルーティングテーブルにISPをネクストホップとするデフォルトルートが存在しないため、default-information originateコマンドでデフォルトルートをアドバタイズできません。
切り分け
R13 切り分け
R13#show ip route 0.0.0.0
Routing entry for 0.0.0.0/0, supernet
Known via "ospf 1", distance 110, metric 1, candidate default path
Tag 1, type extern 2, forward metric 30
Last update from 10.1.1.14 on FastEthernet1/0, 00:00:57 ago
Routing Descriptor Blocks:
* 10.1.1.14, from 14.14.14.14, 00:00:57 ago, via FastEthernet1/0
Route metric is 1, traffic share count is 1
Route tag 1
R13#show ip ospf database external self-originate
OSPF Router with ID (13.13.13.13) (Process ID 1)
設定の修正
R13 設定の修正
ip route 0.0.0.0 0.0.0.0 100.1.0.2
3.スタブエリア設定のミスマッチ
R23でエリア2のスタブエリアの設定が行われていないので、他のルータとネイバーを確立することができません。
切り分け
R23 切り分け
R23#debug ip ospf hello OSPF hello events debugging is on R23# *Mar 1 00:07:49.475: OSPF: Send hello to 224.0.0.5 area 2 on FastEthernet1/0 from 10.2.1.23 *Mar 1 00:07:50.443: OSPF: Rcv hello from 22.22.22.22 area 2 from FastEthernet1/0 10.2.1.22 *Mar 1 00:07:50.447: OSPF: Hello from 10.2.1.22 with mismatched Stub/Transit area option bit
設定の修正
R23 設定の修正
router ospf 1 area 2 stub
4.ネイバー認証のミスマッチ
R31 FastEthernet0/0でMD5によるユーザ認証が有効化されていないので、他のルータとネイバーを確立することができません。
切り分け
R31 切り分け
R31#debug ip ospf adj OSPF adjacency events debugging is on R31# *Mar 1 00:09:24.355: OSPF: Rcv pkt from 10.0.0.12, FastEthernet0/0 : Mismatch Authentication type. Input packet specified type 2, we use type 0
設定の修正
R31 設定の修正
interface FastEthernet0/0 ip ospf authentication message-digest
5.再配送時のsubnetsオプション
R42でRIPからOSPFへ再配送するときにsubnetsオプションが付けられていないので、サブネッティングされたRIPドメインのルートがOSPFへ再配送されていません。
切り分け
R42 切り分け
R42#show ip ospf database nssa-external self-originate
OSPF Router with ID (42.42.42.42) (Process ID 1)
R42#show run | section router ospf
router ospf 1
router-id 42.42.42.42
log-adjacency-changes
auto-cost reference-bandwidth 3000
area 4 nssa
summary-address 172.16.0.0 255.255.252.0
redistribute rip
passive-interface Loopback0
network 10.4.0.0 0.0.255.255 area 4
設定の修正
R42 設定の修正
router ospf 1 redistribute rip subnets
正常な設定ファイル
R11 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R11 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.11.11 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.11 255.255.255.0 ip ospf authentication message-digest ip ospf message-digest-key 1 md5 cisco ip ospf hello-interval 1 ip ospf priority 255 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.1.1.11 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 11.11.11.11 log-adjacency-changes auto-cost reference-bandwidth 3000 area 1 range 10.1.0.0 255.255.0.0 passive-interface Loopback0 network 10.0.0.0 0.0.0.255 area 0 network 10.1.0.0 0.0.255.255 area 1 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R12 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R12 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.12.12 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.12 255.255.255.0 ip ospf authentication message-digest ip ospf message-digest-key 1 md5 cisco ip ospf hello-interval 1 ip ospf priority 100 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.1.1.12 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 12.12.12.12 log-adjacency-changes auto-cost reference-bandwidth 3000 area 1 range 10.1.0.0 255.255.0.0 passive-interface Loopback0 network 10.0.0.0 0.0.0.255 area 0 network 10.1.0.0 0.0.255.255 area 1 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R13 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R13 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.13.13 255.255.255.255 ! interface FastEthernet0/0 ip address 10.1.2.13 255.255.255.0 ip nat inside ip virtual-reassembly duplex auto speed auto ! interface FastEthernet1/0 ip address 10.1.1.13 255.255.255.0 ip nat inside ip virtual-reassembly duplex auto speed auto ! interface Serial2/0 ip address 100.1.0.1 255.255.255.252 ip nat outside ip virtual-reassembly serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 13.13.13.13 log-adjacency-changes auto-cost reference-bandwidth 3000 passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.1.0.0 0.0.255.255 area 1 default-information originate metric-type 1 ! ip http server ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 100.1.0.2 ! ! ip nat inside source list 1 interface Serial2/0 overload ! access-list 1 permit 10.0.0.0 0.255.255.255 access-list 1 permit 172.16.0.0 0.0.255.255 ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R14 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R14 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.14.14 255.255.255.255 ! interface FastEthernet0/0 ip address 10.1.3.14 255.255.255.0 ip nat inside ip virtual-reassembly duplex auto speed auto ! interface FastEthernet1/0 ip address 10.1.1.14 255.255.255.0 ip nat inside ip virtual-reassembly duplex auto speed auto ! interface Serial2/0 ip address 100.1.0.5 255.255.255.252 ip nat outside ip virtual-reassembly serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 14.14.14.14 log-adjacency-changes auto-cost reference-bandwidth 3000 passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.1.0.0 0.0.255.255 area 1 default-information originate ! ip http server ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 100.1.0.6 ! ! ip nat inside source list 1 interface Serial2/0 overload ! access-list 1 permit 10.0.0.0 0.255.255.255 access-list 1 permit 172.16.0.0 0.0.255.255 ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R21 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R21 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.2.21.21 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.21 255.255.255.0 ip ospf authentication message-digest ip ospf message-digest-key 1 md5 cisco ip ospf hello-interval 1 ip ospf priority 0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.2.1.21 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 21.21.21.21 log-adjacency-changes auto-cost reference-bandwidth 3000 area 2 stub area 2 range 10.2.0.0 255.255.0.0 passive-interface Loopback0 network 10.0.0.0 0.0.0.255 area 0 network 10.2.0.0 0.0.255.255 area 2 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R22 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R22 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.2.22.22 255.255.255.255 ! interface FastEthernet0/0 ip address 10.2.2.22 255.255.255.0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.2.1.22 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 22.22.22.22 log-adjacency-changes auto-cost reference-bandwidth 3000 area 2 stub passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.2.0.0 0.0.255.255 area 2 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R23 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R23 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.2.23.23 255.255.255.255 ! interface FastEthernet0/0 ip address 10.2.3.23 255.255.255.0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.2.1.23 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 23.23.23.23 log-adjacency-changes auto-cost reference-bandwidth 3000 area 2 stub passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.2.0.0 0.0.255.255 area 2 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R31 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R31 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.3.31.31 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.31 255.255.255.0 ip ospf authentication message-digest ip ospf message-digest-key 1 md5 cisco ip ospf hello-interval 1 ip ospf priority 0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.3.1.31 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 23.23.23.23 log-adjacency-changes auto-cost reference-bandwidth 3000 area 3 stub no-summary area 3 range 10.3.0.0 255.255.0.0 passive-interface FastEthernet0/0 passive-interface Loopback0 network 10.0.0.0 0.0.0.255 area 0 network 10.2.0.0 0.0.255.255 area 2 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R41 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R41 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.4.41.41 255.255.255.255 ! interface FastEthernet0/0 ip address 10.0.0.41 255.255.255.0 ip ospf authentication message-digest ip ospf message-digest-key 1 md5 cisco ip ospf hello-interval 1 ip ospf priority 0 duplex auto speed auto ! interface FastEthernet1/0 ip address 10.4.1.41 255.255.255.0 duplex auto speed auto ! interface Serial2/0 no ip address shutdown serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 41.41.41.41 log-adjacency-changes auto-cost reference-bandwidth 3000 area 4 nssa default-information-originate area 4 range 10.4.0.0 255.255.0.0 passive-interface Loopback0 network 10.0.0.0 0.0.0.255 area 0 network 10.4.0.0 0.0.255.255 area 4 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R42 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R42 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.4.42.42 255.255.255.0 ! interface FastEthernet0/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet1/0 ip address 10.4.1.42 255.255.255.0 duplex auto speed auto ! interface Serial2/0 ip address 172.16.0.42 255.255.255.0 serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router ospf 1 router-id 42.42.42.42 log-adjacency-changes auto-cost reference-bandwidth 3000 area 4 nssa summary-address 172.16.0.0 255.255.252.0 redistribute rip subnets passive-interface Loopback0 network 10.4.0.0 0.0.255.255 area 4 ! router rip version 2 network 172.16.0.0 default-information originate ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
R43 Correct Configuration (Click)
! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R43 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.4.43.43 255.255.255.255 ! interface Loopback1 ip address 172.16.2.43 255.255.255.0 secondary ip address 172.16.1.43 255.255.255.0 ! interface FastEthernet0/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet1/0 no ip address shutdown duplex auto speed auto ! interface Serial2/0 ip address 172.16.0.43 255.255.255.0 serial restart-delay 0 ! interface Serial2/1 no ip address shutdown serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! router rip version 2 passive-interface default no passive-interface Serial2/0 network 172.16.0.0 ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
ISP Correct Configuration (Click)
! ! ! ! ! ! ! ! ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname ISP ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 100.1.1.1 255.255.255.0 ! interface FastEthernet0/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet1/0 no ip address shutdown duplex auto speed auto ! interface Serial2/0 ip address 100.1.0.2 255.255.255.252 serial restart-delay 0 ! interface Serial2/1 ip address 100.1.0.6 255.255.255.252 serial restart-delay 0 ! interface Serial2/2 no ip address shutdown serial restart-delay 0 ! interface Serial2/3 no ip address shutdown serial restart-delay 0 ! ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 exec-timeout 0 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
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