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。Part4では、ルート集約を行ってルーティングテーブルのエントリを最適化します。
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 -> このページで設定
- 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 Part3」完了時点から開始します。
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 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 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 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 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 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 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 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 0.0.255.255 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 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 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 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 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 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 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 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 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 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
設定と確認 Part4:ルート集約
Step1:エリア0のLSDBの確認
ルート集約にともなってLSDBの変化を確認するために、ルート集約の設定を行う前のエリア0のLSDBを確認します。R11でエリア0のLSDBを見ると、次のようになります。
R11 show ip ospf database
R11#show ip ospf database
OSPF Router with ID (11.11.11.11) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
11.11.11.11 11.11.11.11 1053 0x8000005B 0x00BC7B 1
12.12.12.12 12.12.12.12 1895 0x8000005A 0x0080AF 1
21.21.21.21 21.21.21.21 847 0x8000005A 0x00508E 1
31.31.31.31 31.31.31.31 1419 0x8000005B 0x00DFA3 1
41.41.41.41 41.41.41.41 999 0x8000005B 0x0077AF 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.0.11 11.11.11.11 1053 0x8000005D 0x00BD01
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.1.1.0 11.11.11.11 1053 0x8000005A 0x001F6E
10.1.1.0 12.12.12.12 1895 0x8000005A 0x000188
10.1.2.0 11.11.11.11 1053 0x8000005A 0x00412D
10.1.2.0 12.12.12.12 1895 0x8000005A 0x002347
10.1.3.0 11.11.11.11 1055 0x8000005A 0x003637
10.1.3.0 12.12.12.12 1897 0x8000005A 0x001851
10.1.11.11 11.11.11.11 1057 0x8000005A 0x001F76
10.1.11.11 12.12.12.12 1899 0x8000005A 0x002E45
10.1.12.12 11.11.11.11 1057 0x8000005A 0x00373E
10.1.12.12 12.12.12.12 1899 0x8000005A 0x00EBA3
10.1.13.13 11.11.11.11 1057 0x8000005A 0x002251
10.1.13.13 12.12.12.12 1899 0x8000005A 0x00046B
10.1.14.14 11.11.11.11 1057 0x8000005A 0x000D64
10.1.14.14 12.12.12.12 1899 0x8000005A 0x00EE7E
10.2.1.0 21.21.21.21 851 0x8000005A 0x00E57E
10.2.2.0 21.21.21.21 1609 0x80000025 0x007208
10.2.3.0 21.21.21.21 1609 0x80000025 0x006712
10.2.21.21 21.21.21.21 851 0x8000005A 0x001345
10.2.22.22 21.21.21.21 1609 0x80000025 0x0095D7
10.2.23.23 21.21.21.21 1609 0x80000025 0x0080EA
10.3.1.0 31.31.31.31 1423 0x8000005A 0x00AC8E
10.3.31.31 31.31.31.31 1423 0x8000005A 0x000714
10.4.1.0 41.41.41.41 1002 0x8000005A 0x00739E
10.4.41.41 41.41.41.41 1002 0x8000005A 0x00FAE2
10.4.42.42 41.41.41.41 1259 0x80000024 0x007F74
Summary ASB Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
13.13.13.13 11.11.11.11 1298 0x8000003C 0x008EF3
13.13.13.13 12.12.12.12 1899 0x8000003C 0x00700E
14.14.14.14 11.11.11.11 1298 0x8000003C 0x00601E
14.14.14.14 12.12.12.12 1899 0x8000003C 0x004238
-- omitted --
R11は、エリア1内のネットワークアドレス(10.1.x.x/24)を表すLSAタイプ3をエリア0のLSDBに生成しています。これは、R12も同様です。
Step2:エリア1のルート集約の設定
エリア1とエリア0のABRであるR11およびR12でエリア1のルート集約の設定を行います。エリア1のルートを10.1.0.0/16で集約します。
R11/R12 エリア1のルート集約の設定
router ospf 1 area 1 range 10.1.0.0 255.255.0.0
Step3:エリア1のルート集約の確認
集約の設定をしたあと、R11でエリア0のLSDBを確認します。
R11 show ip ospf database
R11#show ip ospf database
OSPF Router with ID (11.11.11.11) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
11.11.11.11 11.11.11.11 1711 0x8000005B 0x00BC7B 1
12.12.12.12 12.12.12.12 530 0x8000005B 0x007EB0 1
21.21.21.21 21.21.21.21 1504 0x8000005A 0x00508E 1
31.31.31.31 31.31.31.31 57 0x8000005C 0x00DDA4 1
41.41.41.41 41.41.41.41 1656 0x8000005B 0x0077AF 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.0.11 11.11.11.11 1711 0x8000005D 0x00BD01
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.1.0.0 11.11.11.11 401 0x80000001 0x00B94B
10.1.0.0 12.12.12.12 396 0x80000001 0x009B65
10.2.1.0 21.21.21.21 1504 0x8000005A 0x00E57E
10.2.2.0 21.21.21.21 221 0x80000026 0x007009
10.2.3.0 21.21.21.21 222 0x80000026 0x006513
10.2.21.21 21.21.21.21 1505 0x8000005A 0x001345
10.2.22.22 21.21.21.21 222 0x80000026 0x0093D8
10.2.23.23 21.21.21.21 222 0x80000026 0x007EEB
10.3.1.0 31.31.31.31 58 0x8000005B 0x00AA8F
10.3.31.31 31.31.31.31 58 0x8000005B 0x000515
10.4.1.0 41.41.41.41 1656 0x8000005A 0x00739E
10.4.41.41 41.41.41.41 1656 0x8000005A 0x00FAE2
10.4.42.42 41.41.41.41 1913 0x80000024 0x007F74
Summary ASB Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
13.13.13.13 11.11.11.11 1952 0x8000003C 0x008EF3
13.13.13.13 12.12.12.12 531 0x8000003D 0x006E0F
14.14.14.14 11.11.11.11 1952 0x8000003C 0x00601E
14.14.14.14 12.12.12.12 531 0x8000003D 0x004039
-- omitted --
R11は集約ルート10.1.0.0/16を表すLSAタイプ3をエリア0のLSDBに生成していることがわかります。R12も同様です。
そして、他のルータのルーティングテーブルを確認するとエリア1のルートが集約されていることが分かります。R21では、次のようになります。
R21 show ip route ospf
R21#show ip route ospf
172.16.0.0/24 is subnetted, 3 subnets
O E2 172.16.0.0 [110/20] via 10.0.0.41, 00:11:49, FastEthernet0/0
O E2 172.16.1.0 [110/20] via 10.0.0.41, 00:11:49, FastEthernet0/0
O E2 172.16.2.0 [110/20] via 10.0.0.41, 00:11:49, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 13 subnets, 3 masks
O IA 10.3.1.0/24 [110/60] via 10.0.0.31, 20:10:31, FastEthernet0/0
O 10.2.23.23/32 [110/31] via 10.2.1.23, 20:47:15, FastEthernet1/0
O 10.2.22.22/32 [110/31] via 10.2.1.22, 20:47:15, FastEthernet1/0
O IA 10.3.31.31/32 [110/31] via 10.0.0.31, 20:10:31, FastEthernet0/0
O 10.2.2.0/24 [110/60] via 10.2.1.22, 20:47:15, FastEthernet1/0
O 10.2.3.0/24 [110/60] via 10.2.1.23, 20:47:15, FastEthernet1/0
O IA 10.1.0.0/16 [110/31] via 10.0.0.12, 00:11:48, FastEthernet0/0
[110/31] via 10.0.0.11, 00:11:48, FastEthernet0/0
O IA 10.4.42.42/32 [110/61] via 10.0.0.41, 20:10:10, FastEthernet0/0
O IA 10.4.41.41/32 [110/31] via 10.0.0.41, 20:10:31, FastEthernet0/0
O IA 10.4.1.0/24 [110/60] via 10.0.0.41, 20:10:31, FastEthernet0/0
O*E1 0.0.0.0/0 [110/61] via 10.0.0.12, 00:11:49, FastEthernet0/0
[110/61] via 10.0.0.11, 00:11:49, FastEthernet0/0
Step4:エリア2/エリア3/エリア4のルート集約の設定
エリア2、エリア3、エリア4でもエリア1と同様に、ABRでルート集約の設定を行います。
R21 ルート集約
router ospf 1 area 2 range 10.2.0.0 255.255.0.0
R31 ルート集約
router ospf 1 area 3 range 10.3.0.0 255.255.0.0
R41 ルート集約
router ospf 1 area 4 range 10.4.0.0 255.255.0.0
Step5:エリア2/エリア3/エリア4のルート集約の確認
各エリアのルート集約を確認するために、エリア0のLSDBを確認します。R11では、次のような表示になります。
R11
R11#show ip ospf database
OSPF Router with ID (11.11.11.11) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
11.11.11.11 11.11.11.11 1727 0x8000005E 0x00B67E 1
12.12.12.12 12.12.12.12 588 0x8000005E 0x0078B3 1
21.21.21.21 21.21.21.21 1734 0x8000005D 0x004A91 1
31.31.31.31 31.31.31.31 47 0x8000005F 0x00D7A7 1
41.41.41.41 41.41.41.41 1679 0x8000005E 0x0071B2 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.0.11 11.11.11.11 1727 0x80000060 0x00B704
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.1.0.0 11.11.11.11 485 0x80000004 0x00B34E
10.1.0.0 12.12.12.12 588 0x80000004 0x009568
10.2.0.0 21.21.21.21 253 0x80000001 0x00805B
10.3.0.0 31.31.31.31 226 0x80000001 0x00476B
10.4.0.0 41.41.41.41 194 0x80000001 0x000E7B
Summary ASB Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
13.13.13.13 11.11.11.11 1984 0x8000003F 0x0088F6
13.13.13.13 12.12.12.12 588 0x80000040 0x006812
14.14.14.14 11.11.11.11 1984 0x8000003F 0x005A21
14.14.14.14 12.12.12.12 588 0x80000040 0x003A3C
-- omitted --
各エリアのABRがエリア内のネットワークアドレスを集約して、エリア0にLSAタイプ3として集約ルートをアドバタイズしていることがわかります。
また、いずれかのルータでルーティングテーブルを確認すると、他のエリアのルートがすべて/16のサブネットマスクで集約されていることがわかります。R21では、次のような表示です。
R21 show ip route ospf
R21#show ip route ospf
172.16.0.0/24 is subnetted, 3 subnets
O E2 172.16.0.0 [110/20] via 10.0.0.41, 00:14:04, FastEthernet0/0
O E2 172.16.1.0 [110/20] via 10.0.0.41, 00:14:04, FastEthernet0/0
O E2 172.16.2.0 [110/20] via 10.0.0.41, 00:14:04, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 11 subnets, 3 masks
O 10.2.23.23/32 [110/31] via 10.2.1.23, 00:15:08, FastEthernet1/0
O 10.2.22.22/32 [110/31] via 10.2.1.22, 00:15:08, FastEthernet1/0
O 10.2.0.0/16 is a summary, 00:15:08, Null0
O IA 10.3.0.0/16 [110/31] via 10.0.0.31, 00:14:42, FastEthernet0/0
O 10.2.2.0/24 [110/60] via 10.2.1.22, 00:15:08, FastEthernet1/0
O 10.2.3.0/24 [110/60] via 10.2.1.23, 00:15:08, FastEthernet1/0
O IA 10.1.0.0/16 [110/31] via 10.0.0.12, 00:15:08, FastEthernet0/0
[110/31] via 10.0.0.11, 00:15:08, FastEthernet0/0
O IA 10.4.0.0/16 [110/31] via 10.0.0.41, 00:14:09, FastEthernet0/0
O*E1 0.0.0.0/0 [110/61] via 10.0.0.12, 00:14:04, FastEthernet0/0
[110/61] via 10.0.0.11, 00:14:04, FastEthernet0/0
Step6:エリア4のLSDBの確認
外部ルートのルート集約にともなうLSDBの変化を確認するために、主役の設定を行う前のLSDBを確認します。
R42 show ip ospf database
R42#show ip ospf database
OSPF Router with ID (42.42.42.42) (Process ID 1)
Router Link States (Area 4)
Link ID ADV Router Age Seq# Checksum Link count
41.41.41.41 41.41.41.41 440 0x80000063 0x004F2F 2
42.42.42.42 42.42.42.42 932 0x80000062 0x002F46 2
Net Link States (Area 4)
Link ID ADV Router Age Seq# Checksum
10.4.1.42 42.42.42.42 932 0x80000061 0x00D3D0
Summary Net Link States (Area 4)
Link ID ADV Router Age Seq# Checksum
10.0.0.0 41.41.41.41 440 0x8000005F 0x004AC1
10.1.0.0 41.41.41.41 1203 0x80000004 0x00FE66
10.2.0.0 41.41.41.41 1054 0x80000001 0x00F86E
10.3.0.0 41.41.41.41 1027 0x80000001 0x00EC79
Type-7 AS External Link States (Area 4)
Link ID ADV Router Age Seq# Checksum Tag
0.0.0.0 41.41.41.41 692 0x80000028 0x00EBF9 0
172.16.0.0 42.42.42.42 932 0x80000028 0x009F08 0
172.16.1.0 42.42.42.42 932 0x80000028 0x009412 0
172.16.2.0 42.42.42.42 932 0x80000028 0x00891C 0
R42は、RIPドメイン内のネットワークアドレス(172.16.0.0/24、172.16.1.0/24、172.16.2.0/24)を表すLSAタイプ7をエリア4のLSDBに生成しています。
Step7:RIPドメインのルート集約の設定
R42でRIP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。
R42 ルート集約の設定
router ospf 1 summary-address 172.16.0.0 255.255.252.0
Step8:RIPドメインのルート集約の確認
外部ルートのルート集約を確認するために、エリア4のLSDBを確認します。R42では、次のような表示になります。
R42 show ip ospf database
R42#show ip ospf database
OSPF Router with ID (42.42.42.42) (Process ID 1)
Router Link States (Area 4)
Link ID ADV Router Age Seq# Checksum Link count
41.41.41.41 41.41.41.41 821 0x80000063 0x004F2F 2
42.42.42.42 42.42.42.42 1313 0x80000062 0x002F46 2
Net Link States (Area 4)
Link ID ADV Router Age Seq# Checksum
10.4.1.42 42.42.42.42 1313 0x80000061 0x00D3D0
Summary Net Link States (Area 4)
Link ID ADV Router Age Seq# Checksum
10.0.0.0 41.41.41.41 821 0x8000005F 0x004AC1
10.1.0.0 41.41.41.41 1584 0x80000004 0x00FE66
10.2.0.0 41.41.41.41 1434 0x80000001 0x00F86E
10.3.0.0 41.41.41.41 1408 0x80000001 0x00EC79
Type-7 AS External Link States (Area 4)
Link ID ADV Router Age Seq# Checksum Tag
0.0.0.0 41.41.41.41 1073 0x80000028 0x00EBF9 0
172.16.0.0 42.42.42.42 77 0x80000029 0x008E1B 0
R42はRIPドメインのルートを172.16.0.0/22に集約して、エリア4(NSSA)にLSAタイプ7としてアドバタイズしていることがわかります。
R41でルーティングテーブルを確認すると、RIPドメインの集約ルートが「O N2」のルートとして登録されていることがわかります。
R41 show ip route ospf
R41#show ip route ospf
172.16.0.0/22 is subnetted, 1 subnets
O N2 172.16.0.0 [110/20] via 10.4.1.42, 00:09:16, FastEthernet1/0
10.0.0.0/8 is variably subnetted, 8 subnets, 3 masks
O IA 10.2.0.0/16 [110/31] via 10.0.0.21, 00:30:53, FastEthernet0/0
O IA 10.3.0.0/16 [110/31] via 10.0.0.31, 00:30:53, FastEthernet0/0
O IA 10.1.0.0/16 [110/31] via 10.0.0.12, 00:30:53, FastEthernet0/0
[110/31] via 10.0.0.11, 00:30:53, FastEthernet0/0
O 10.4.42.42/32 [110/31] via 10.4.1.42, 00:30:53, FastEthernet1/0
O 10.4.0.0/16 is a summary, 00:30:53, Null0
O*E1 0.0.0.0/0 [110/61] via 10.0.0.12, 00:30:53, FastEthernet0/0
[110/61] via 10.0.0.11, 00:30:53, FastEthernet0/0
また、LSAタイプ7はNSSAのABRであるR41がLSAタイプ5に変換してエリア0にアドバタイズします。R11のLSDBとルーティングテーブルを確認すると、RIPドメインの集約ルートがLSAタイプ5に変換されていることがわかります。
R11 show ip ospf database/show ip route ospf
R11#show ip ospf database
OSPF Router with ID (11.11.11.11) (Process ID 1)
-- omitted --
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
0.0.0.0 13.13.13.13 1662 0x80000040 0x00B10E 1
0.0.0.0 14.14.14.14 1504 0x80000040 0x001724 1
172.16.0.0 41.41.41.41 643 0x8000002A 0x003F77 0
R11#show ip route ospf
172.16.0.0/22 is subnetted, 1 subnets
O E2 172.16.0.0 [110/20] via 10.0.0.41, 00:10:47, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 12 subnets, 3 masks
O IA 10.2.0.0/16 [110/31] via 10.0.0.21, 00:33:29, FastEthernet0/0
O 10.1.3.0/24 [110/60] via 10.1.1.14, 02:16:56, FastEthernet1/0
O IA 10.3.0.0/16 [110/31] via 10.0.0.31, 00:33:02, FastEthernet0/0
O 10.1.2.0/24 [110/60] via 10.1.1.13, 02:16:56, FastEthernet1/0
O 10.1.14.14/32 [110/31] via 10.1.1.14, 02:16:56, FastEthernet1/0
O 10.1.13.13/32 [110/31] via 10.1.1.13, 02:16:56, FastEthernet1/0
O 10.1.12.12/32 [110/31] via 10.1.1.12, 02:16:56, FastEthernet1/0
O 10.1.0.0/16 is a summary, 02:16:56, Null0
O IA 10.4.0.0/16 [110/31] via 10.0.0.41, 00:32:29, FastEthernet0/0
O*E1 0.0.0.0/0 [110/31] via 10.1.1.13, 00:32:24, FastEthernet1/0
Part4完了の設定ファイル
R11 Completed 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 Completed 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 Completed 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 Completed 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 Completed 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 Completed 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 Completed 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 Completed 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 Completed 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 Completed 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 Completed 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 Completed 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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