目次
概要
コア/ディストリビューション/アクセス層の3階層モデルのLANにおいて、EIGRPでのルーティングを行う設定例です。
拠点1はコア/ディストリビューション/アクセス層の3階層モデルのLANです。拠点2は小規模なLANで、コア層を省略した2階層モデルです。ディストリビューション層やコア層は冗長化します。冗長化したディストリビューション層のレイヤ3スイッチでVRRPを利用します。また、拠点1と拠点2を接続する広域イーサネット網も冗長化します。
ネットワーク構成
物理構成
IPアドレス
| 機器 | インタフェース | IPアドレス/サブネットマスク |
|---|---|---|
| DSW111 | Vlan11 | 10.1.11.1/24 |
| Vlan101 | 10.1.101.1/24 | |
| Vlan102 | 10.1.102.1/24 | |
| Lo0 | 10.1.0.1/32 | |
| DSW112 | Vlan11 | 10.1.11.2/24 |
| Vlan103 | 10.1.103.2/24 | |
| Vlan104 | 10.1.104.2/24 | |
| Lo0 | 10.1.0.2/32 | |
| PC1 | F0/0 | 10.1.11.100/24 |
| DSW121 | Vlan21 | 10.1.21.1/24 |
| Vlan105 | 10.1.105.1/24 | |
| Vlan106 | 10.1.106.1/24 | |
| Lo0 | 10.1.0.3/32 | |
| DSW122 | Vlan21 | 10.1.21.2/24 |
| Vlan107 | 10.1.107.2/24 | |
| Vlan108 | 10.1.108.2/24 | |
| Lo0 | 10.1.0.4/32 | |
| PC1 | F0/0 | 10.1.21.100/24 |
| DSW131 | Vlan31 | 10.1.31.1/24 |
| Vlan109 | 10.1.109.1/24 | |
| Vlan110 | 10.1.110.1/24 | |
| Lo0 | 10.1.0.5/32 | |
| DSW132 | Vlan31 | 10.1.31.2/24 |
| Vlan111 | 10.1.111.2/24 | |
| Vlan112 | 10.1.112.2/24 | |
| Lo0 | 10.1.0.6/32 | |
| SRV | F0/0 | 10.1.11.100/24 |
| BBSW1 | Vlan101 | 10.1.101.11/24 |
| Vlan103 | 10.1.103.11/24 | |
| Vlan105 | 10.1.105.11/24 | |
| Vlan107 | 10.1.107.11/24 | |
| Vlan109 | 10.1.109.11/24 | |
| Vlan111 | 10.1.111.11/24 | |
| Vlan113 | 10.1.113.11/24 | |
| Vlan115 | 10.1.115.11/24 | |
| Lo0 | 10.1.0.7/32 | |
| BBSW2 | Vlan102 | 10.1.102.12/24 |
| Vlan104 | 10.1.104.12/24 | |
| Vlan106 | 10.1.106.12/24 | |
| Vlan108 | 10.1.108.12/24 | |
| Vlan110 | 10.1.110.12/24 | |
| Vlan112 | 10.1.112.12/24 | |
| Vlan114 | 10.1.114.12/24 | |
| Vlan116 | 10.1.116.12/24 | |
| Lo0 | 10.1.0.8/32 | |
| EDSW1 | Vlan113 | 10.1.113.1/24 |
| Vlan114 | 10.1.114.1/24 | |
| Vlan117 | 10.1.117.1/24 | |
| Vlan118 | 10.1.118.1/24 | |
| Lo0 | 10.1.0.9/32 | |
| EDSW2 | Vlan115 | 10.1.115.2/24 |
| Vlan116 | 10.1.116.2/24 | |
| Vlan119 | 10.1.119.2/24 | |
| Vlan120 | 10.1.120.2/24 | |
| Lo0 | 10.1.0.10/32 | |
| WSW11 | Vlan100 | 10.0.1.11/24 |
| Vlan200 | 10.0.2.11/24 | |
| Vlan117 | 10.1.117.11/24 | |
| Vlan119 | 10.1.119.11/24 | |
| Lo0 | 10.1.0.11/32 | |
| WSW12 | Vlan100 | 10.0.1.12/24 |
| Vlan200 | 10.0.2.12/24 | |
| Vlan118 | 10.1.118.12/24 | |
| Vlan120 | 10.1.120.12/24 | |
| Lo0 | 10.1.0.12/32 | |
| WSW21 | Vlan100 | 10.0.1.21/24 |
| Vlan200 | 10.0.2.21/24 | |
| Vlan11 | 10.2.11.21/24 | |
| Lo0 | 10.2.0.13/32 | |
| WSW22 | Vlan100 | 10.0.1.22/24 |
| Vlan200 | 10.0.2.22/24 | |
| Vlan11 | 10.2.11.22/24 | |
| Lo0 | 10.2.0.14/32 | |
| PC3 | F0/0 | 10.2.11.100/24 |
VRRP
| インタフェース | グループ番号 | 仮想IP | マスタルータ | トラック |
|---|---|---|---|---|
| Vlan11 | 11 | 10.1.11.254 | DSW111 | DSW111 F0/2、F0/3 |
| Vlan21 | 21 | 10.1.21.254 | DSW121 | DSW121 F0/2、F0/3 |
| Vlan31 | 31 | 10.1.31.254 | DSW131 | DSW131 F0/2、F0/3 |
| Vlan11(拠点2) | 11 | 10.2.11.254 | WSW21 | WSW21 F0/3、F0/3 |
論理構成
3階層モデルLANのEIGRPルーティングの構成例
各機器の設定ファイル
VLAN/SVIの設定を行ったうえで、基本的なEIGRPの設定まで完了している状態の各機器の設定ファイルの内容を以下に挙げています。
拠点1
ASW111 設定ファイル(EIGRP基本)
ersion 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname ASW111 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,11,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport trunk allowed vlan 1,11,1002-1005 switchport mode trunk ! interface FastEthernet0/3 switchport access vlan 11 spanning-tree portfast ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
ASW121 設定ファイル(EIGRP基本)
ersion 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname ASW121 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,21,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport trunk allowed vlan 1,21,1002-1005 switchport mode trunk ! interface FastEthernet0/3 switchport access vlan 21 spanning-tree portfast ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
ASW131 設定ファイル(EIGRP基本)
ersion 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname ASW131 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,31,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport trunk allowed vlan 1,31,1002-1005 switchport mode trunk ! interface FastEthernet0/3 switchport access vlan 31 spanning-tree portfast ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
DSW111設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname DSW111 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! track 1 interface FastEthernet0/2 line-protocol ! track 2 interface FastEthernet0/3 line-protocol ! ! ! interface Loopback0 ip address 10.1.0.1 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,11,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport access vlan 101 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 102 spanning-tree portfast ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan11 ip address 10.1.11.1 255.255.255.0 vrrp 11 ip 10.1.11.254 vrrp 11 priority 150 vrrp 11 track 1 decrement 30 vrrp 11 track 2 decrement 30 ! interface Vlan101 ip address 10.1.101.1 255.255.255.0 ! interface Vlan102 ip address 10.1.102.1 255.255.255.0 ! ! router eigrp 1 passive-interface Vlan11 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
DSW112設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname DSW112 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.0.2 255.255.255.0 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,11,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport access vlan 103 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 104 spanning-tree portfast ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan11 ip address 10.1.11.2 255.255.255.0 vrrp 11 ip 10.1.11.254 ! interface Vlan103 ip address 10.1.103.2 255.255.255.0 ! interface Vlan104 ip address 10.1.104.2 255.255.255.0 ! ! router eigrp 1 passive-interface Vlan11 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
DSW121設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname DSW121 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! track 1 interface FastEthernet0/2 line-protocol ! track 2 interface FastEthernet0/3 line-protocol ! ! ! interface Loopback0 ip address 10.1.0.3 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,21,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport access vlan 105 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 106 spanning-tree portfast ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan21 ip address 10.1.21.1 255.255.255.0 vrrp 21 ip 10.1.21.254 vrrp 21 priority 150 vrrp 21 track 1 decrement 30 vrrp 21 track 2 decrement 30 ! interface Vlan105 ip address 10.1.105.1 255.255.255.0 ! interface Vlan106 ip address 10.1.106.1 255.255.255.0 ! ! router eigrp 1 passive-interface Vlan21 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
DSW122設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname DSW122 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.0.4 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,21,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport access vlan 107 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 108 spanning-tree portfast ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan21 ip address 10.1.21.2 255.255.255.0 vrrp 21 ip 10.1.21.254 ! interface Vlan107 ip address 10.1.107.2 255.255.255.0 ! interface Vlan108 ip address 10.1.108.2 255.255.255.0 ! ! router eigrp 1 passive-interface Vlan21 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
DSW131設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname DSW131 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! track 1 interface FastEthernet0/2 line-protocol ! track 2 interface FastEthernet0/3 line-protocol ! ! ! interface Loopback0 ip address 10.1.0.5 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,31,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport access vlan 109 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 110 spanning-tree portfast ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan31 ip address 10.1.31.1 255.255.255.0 vrrp 31 ip 10.1.31.254 vrrp 31 priority 150 vrrp 31 track 1 decrement 30 vrrp 31 track 2 decrement 30 ! interface Vlan109 ip address 10.1.109.1 255.255.255.0 ! interface Vlan110 ip address 10.1.110.1 255.255.255.0 ! ! router eigrp 1 passive-interface Vlan31 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
DSW132設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname DSW132 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.0.6 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,31,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport access vlan 111 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 112 spanning-tree portfast ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan31 ip address 10.1.31.2 255.255.255.0 vrrp 31 ip 10.1.31.254 ! interface Vlan111 ip address 10.1.111.2 255.255.255.0 ! interface Vlan112 ip address 10.1.112.2 255.255.255.0 ! ! router eigrp 1 passive-interface Vlan31 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
EDSW1設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname EDSW1 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.0.9 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport access vlan 113 spanning-tree portfast ! interface FastEthernet0/2 switchport access vlan 114 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 117 spanning-tree portfast ! interface FastEthernet0/4 switchport access vlan 118 spanning-tree portfast ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan113 ip address 10.1.113.1 255.255.255.0 ! interface Vlan114 ip address 10.1.114.1 255.255.255.0 ! interface Vlan117 ip address 10.1.117.1 255.255.255.0 ! interface Vlan118 ip address 10.1.118.1 255.255.255.0 ! ! router eigrp 1 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
EDSW2設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname EDSW2 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.0.10 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport access vlan 115 spanning-tree portfast ! interface FastEthernet0/2 switchport access vlan 116 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 119 spanning-tree portfast ! interface FastEthernet0/4 switchport access vlan 120 spanning-tree portfast ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan115 ip address 10.1.115.2 255.255.255.0 ! interface Vlan116 ip address 10.1.116.2 255.255.255.0 ! interface Vlan119 ip address 10.1.119.2 255.255.255.0 ! interface Vlan120 ip address 10.1.120.2 255.255.255.0 ! ! router eigrp 1 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
WSW11設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname WSW11 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.0.11 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport access vlan 117 spanning-tree portfast ! interface FastEthernet0/2 switchport access vlan 119 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 100 spanning-tree portfast ! interface FastEthernet0/4 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan100 ip address 10.0.1.11 255.255.255.0 ! interface Vlan117 ip address 10.1.117.11 255.255.255.0 ! interface Vlan119 ip address 10.1.119.11 255.255.255.0 ! interface Vlan200 ip address 10.0.2.11 255.255.255.0 ! ! router eigrp 1 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
WSW12設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname WSW12 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.1.0.12 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport access vlan 118 spanning-tree portfast ! interface FastEthernet0/2 switchport access vlan 120 spanning-tree portfast ! interface FastEthernet0/3 switchport access vlan 100 spanning-tree portfast ! interface FastEthernet0/4 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan100 ip address 10.0.1.12 255.255.255.0 ! interface Vlan118 ip address 10.1.118.12 255.255.255.0 ! interface Vlan120 ip address 10.1.120.12 255.255.255.0 ! interface Vlan200 ip address 10.0.2.12 255.255.255.0 ! ! router eigrp 1 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
PC1設定ファイル(EIGRP基本)
version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname PC1 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 no ip routing ! ! no ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ip address 10.1.11.100 255.255.255.0 no ip route-cache duplex auto speed auto ! ! ip default-gateway 10.1.11.254 ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
PC2設定ファイル(EIGRP基本)
version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname PC2 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 no ip routing ! ! no ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ip address 10.1.21.100 255.255.255.0 no ip route-cache duplex auto speed auto ! ! ip default-gateway 10.1.12.254 ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
SRV設定ファイル(EIGRP基本)
version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname SRV ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 no ip routing ! ! no ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ip address 10.1.31.100 255.255.255.0 no ip route-cache duplex auto speed auto ! ! ip default-gateway 10.1.31.254 ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
拠点2
ASW211設定ファイル(EIGRP基本)
ersion 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname ASW211 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,11,1002-1005 switchport mode trunk ! interface FastEthernet0/2 switchport trunk allowed vlan 1,11,1002-1005 switchport mode trunk ! interface FastEthernet0/3 switchport access vlan 11 ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
WSW21設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname WSW21 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! track 1 interface FastEthernet0/3 line-protocol ! track 2 interface FastEthernet0/3 line-protocol ! ! ! interface Loopback0 ip address 10.2.0.21 255.255.255.255 shutdown ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,11,1002-1005 switchport mode trunk ! interface FastEthernet0/2 ! interface FastEthernet0/3 switchport access vlan 100 spanning-tree portfast ! interface FastEthernet0/4 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan11 ip address 10.2.11.21 255.255.255.0 vrrp 11 ip 10.2.11.254 vrrp 11 priority 150 vrrp 11 track 1 decrement 30 vrrp 11 track 2 decrement 30 ! interface Vlan100 ip address 10.0.1.21 255.255.255.0 ! interface Vlan200 ip address 10.0.2.21 255.255.255.0 ! ! router eigrp 1 passive-interface Vlan11 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
WSW22設定ファイル(EIGRP基本)
! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname WSW22 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 10.2.0.22 255.255.255.255 ! interface FastEthernet0/0 ! interface FastEthernet0/1 switchport trunk allowed vlan 1,11,1002-1005 switchport mode trunk ! interface FastEthernet0/2 ! interface FastEthernet0/3 switchport access vlan 100 spanning-tree portfast ! interface FastEthernet0/4 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! interface Vlan11 ip address 10.2.11.22 255.255.255.0 vrrp 11 ip 10.2.11.254 ! interface Vlan100 ip address 10.0.1.22 255.255.255.0 ! interface Vlan200 ip address 10.0.2.22 255.255.255.0 ! ! router eigrp 1 passive-interface Vlan11 network 10.0.0.0 no auto-summary ! ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
PC3設定ファイル(OSPF基本)
version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname PC3 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 no ip routing ! ! no ip cef no ip domain lookup ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ip address 10.2.11.100 255.255.255.0 no ip route-cache duplex auto speed auto ! ! ip default-gateway 10.2.11.254 ip http server ip forward-protocol nd ! ! ! ! ! ! control-plane ! ! ! ! mgcp behavior g729-variants static-pt ! ! ! ! ! line con 0 privilege level 15 line aux 0 line vty 0 4 login ! ! end
EIGRP 追加の設定と確認
基本的なOSPFの設定が完了した状態から、さらに以下の設定と確認を行います。
- Hello/Hold downタイマの確認
- 等コストロードバランス
- ルート集約
Step1:Hello/Hold downタイマの確認
EIGRPでは、Hello/Hold downタイマのデフォルト値はインタフェースの帯域幅によって決まります。イーサネットインタフェースであれば、Hello/Hold downタイマのデフォルトは5/15秒です。DSW111でshow ip eigrp interface detailコマンドは次のようになります。
DSW111 show ip eigrp interface detail
DSW111#show ip eigrp interfaces detail
IP-EIGRP interfaces for process 1
Xmit Queue Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
Vl101 1 0/0 438 0/1 1692 0
Hello interval is 5 sec
Next xmit serial
Un/reliable mcasts: 0/14 Un/reliable ucasts: 19/8
Mcast exceptions: 4 CR packets: 3 ACKs suppressed: 0
Retransmissions sent: 4 Out-of-sequence rcvd: 0
Authentication mode is not set
Use multicast
-- omitted --
ネイバーのダウンを素早く検出するためには、Hello/Hold downタイマを短くして頻繁にHelloパケットを送受信するようにします。Helloパケットのトラフィックは増加しますが、パケットサイズや処理負荷はそれほど大きいものではありません。
EIGRPでは、Hello/Hold downタイマが異なっていてもネイバーを確立することができます。ここでは、Hello/Deadインターバルの値の確認だけとしています。
Step2:等コストロードバランスの確認
各PCおよびSRVが接続されているVLANに対して、すべてのレイヤ3スイッチで通信経路が2つずつ確保されています。すべてのインタフェースのコストは同一のため、特別な設定を行わなくても等コストロードバランスの構成です。
DSW111およびBBSW1/BBSW2からSRVが接続されている10.1.31.0/24のルートを確認すると、次のようになります。
DSW111 show ip eigrp topology 10.1.31.0/24/show ip route 10.1.31.0/24
DSW111#show ip eigrp topology 10.1.31.0/24
IP-EIGRP (AS 1): Topology entry for 10.1.31.0/24
State is Passive, Query origin flag is 1, 2 Successor(s), FD is 33280
Routing Descriptor Blocks:
10.1.101.11 (Vlan101), from 10.1.101.11, Send flag is 0x0
Composite metric is (33280/30720), Route is Internal
Vector metric:
Minimum bandwidth is 100000 Kbit
Total delay is 300 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
10.1.102.12 (Vlan102), from 10.1.102.12, Send flag is 0x0
Composite metric is (33280/30720), Route is Internal
Vector metric:
Minimum bandwidth is 100000 Kbit
Total delay is 300 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
DSW111#show ip route 10.1.31.0
Routing entry for 10.1.31.0/24
Known via "eigrp 1", distance 90, metric 33280, type internal
Redistributing via eigrp 1
Last update from 10.1.102.12 on Vlan102, 00:24:52 ago
Routing Descriptor Blocks:
10.1.102.12, from 10.1.102.12, 00:24:52 ago, via Vlan102
Route metric is 33280, traffic share count is 1
Total delay is 300 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 2
* 10.1.101.11, from 10.1.101.11, 00:24:52 ago, via Vlan101
Route metric is 33280, traffic share count is 1
Total delay is 300 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 2
BBSW1 show ip eigrp topology 10.1.31.0/24/show ip route 10.1.31.0/24
BBSW1#show ip eigrp topology 10.1.31.0/24
IP-EIGRP (AS 1): Topology entry for 10.1.31.0/24
State is Passive, Query origin flag is 1, 2 Successor(s), FD is 30720
Routing Descriptor Blocks:
10.1.109.1 (Vlan109), from 10.1.109.1, Send flag is 0x0
Composite metric is (30720/28160), Route is Internal
Vector metric:
Minimum bandwidth is 100000 Kbit
Total delay is 200 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 1
10.1.111.2 (Vlan111), from 10.1.111.2, Send flag is 0x0
Composite metric is (30720/28160), Route is Internal
Vector metric:
Minimum bandwidth is 100000 Kbit
Total delay is 200 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 1
BBSW1#show ip route 10.1.31.0
Routing entry for 10.1.31.0/24
Known via "eigrp 1", distance 90, metric 30720, type internal
Redistributing via eigrp 1
Last update from 10.1.111.2 on Vlan111, 00:29:18 ago
Routing Descriptor Blocks:
10.1.111.2, from 10.1.111.2, 00:29:18 ago, via Vlan111
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
* 10.1.109.1, from 10.1.109.1, 00:29:18 ago, via Vlan109
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
BBSW2 show ip eigrp topology 10.1.31.0/24/show ip route 10.1.31.0/24
BBSW2#show ip eigrp topology 10.1.31.0/24
IP-EIGRP (AS 1): Topology entry for 10.1.31.0/24
State is Passive, Query origin flag is 1, 2 Successor(s), FD is 30720
Routing Descriptor Blocks:
10.1.110.1 (Vlan110), from 10.1.110.1, Send flag is 0x0
Composite metric is (30720/28160), Route is Internal
Vector metric:
Minimum bandwidth is 100000 Kbit
Total delay is 200 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 1
10.1.112.2 (Vlan112), from 10.1.112.2, Send flag is 0x0
Composite metric is (30720/28160), Route is Internal
Vector metric:
Minimum bandwidth is 100000 Kbit
Total delay is 200 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 1
BBSW2#show ip route 10.1.31.0
Routing entry for 10.1.31.0/24
Known via "eigrp 1", distance 90, metric 30720, type internal
Redistributing via eigrp 1
Last update from 10.1.112.2 on Vlan112, 00:30:55 ago
Routing Descriptor Blocks:
10.1.112.2, from 10.1.112.2, 00:30:55 ago, via Vlan112
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
* 10.1.110.1, from 10.1.110.1, 00:30:55 ago, via Vlan110
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
Step3:集約の設定
WSW11/WSW12で拠点1のルートを集約して広域イーサネット側へアドバタイズします。同様にWSW21/WSW22で拠点2のルートを集約して広域イーサネット側へアドバタイズします。
WSW11/WSW12 ルート集約
interface Vlan100 ip summary-address eigrp 1 10.1.0.0 255.255.0.0 5 ! interface Vlan200 ip summary-address eigrp 1 10.1.0.0 255.255.0.0 5
WSW21/WSW22 ルート集約
interface Vlan100 ip summary-address eigrp 1 10.2.0.0 255.255.0.0 5 ! interface Vlan200 ip summary-address eigrp 1 10.2.0.0 255.255.0.0 5
Step4:集約の確認
WSW11、WSW21でルーティングテーブルを見て、ルート集約されていることを確認します。
WSW11 show ip route 10.2.0.0
WSW11#show ip route 10.2.0.0
Routing entry for 10.2.0.0/16
Known via "eigrp 1", distance 90, metric 30720, type internal
Redistributing via eigrp 1
Last update from 10.0.1.22 on Vlan100, 00:06:28 ago
Routing Descriptor Blocks:
10.0.2.22, from 10.0.2.22, 00:06:28 ago, via Vlan200
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
10.0.2.21, from 10.0.2.21, 00:06:28 ago, via Vlan200
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
10.0.1.22, from 10.0.1.22, 00:06:28 ago, via Vlan100
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
* 10.0.1.21, from 10.0.1.21, 00:06:28 ago, via Vlan100
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
WSW21 show ip route 10.1.0.0
WSW21#show ip route 10.1.0.0
Routing entry for 10.1.0.0/16
Known via "eigrp 1", distance 90, metric 30720, type internal
Redistributing via eigrp 1
Last update from 10.0.1.12 on Vlan100, 00:07:31 ago
Routing Descriptor Blocks:
10.0.2.12, from 10.0.2.12, 00:07:31 ago, via Vlan200
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
10.0.2.11, from 10.0.2.11, 00:07:31 ago, via Vlan200
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
10.0.1.12, from 10.0.1.12, 00:07:31 ago, via Vlan100
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
* 10.0.1.11, from 10.0.1.11, 00:07:31 ago, via Vlan100
Route metric is 30720, traffic share count is 1
Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
関連記事
このページで設定した内容についてのそれぞれの詳細な解説です。
関連記事
EIGRPの仕組み
- EIGRPの概要
- EIGRPの処理の流れとパケットタイプ
- EIGRPルートの生成
- EIGRPのメトリック
- EIGRP DUALの用語
- EIGRPルートの切り替え
- EIGRP 不等コストロードバランス
- EIGRP 基本的な設定と確認コマンド
- EIGRPネイバー認証の設定と確認(クラシックモード)
- EIGRPネイバー認証の設定と確認(Namedモード)
- EIGRPの設定例
- EIGRPルート集約の設定と確認
- EIGRPスタブ ～こっちに代替ルートはありません～
- EIGRP ルート集約とスタブの設定例
- 不連続サブネットでのEIGRPの設定例
- EIGRP 不等コストロードバランスの設定例
- EIGRP セカンダリアドレスのアドバタイズ設定例
- EIGRPデフォルトルートの生成 ～スタティックルートの再配送～
- EIGRPデフォルトルートの生成 ～ルート集約～
- EIGRPデフォルトルートの生成 ～ip default networkコマンド～
- EIGRP Namedモードの概要
- 3階層モデルLANのEIGRPルーティング
- [演習] EIGRP基本設定
- [演習] EIGRP基本設定 トラブルシューティング
- [演習] EIGRP応用設定
- [演習] EIGRP応用設定 トラブルシューティング
- EIGRP 設定ミスの切り分けと修正 Part1
- EIGRP 設定ミスの切り分けと修正 Part2
- EIGRP 設定ミスの切り分けと修正 Part3
