３台のルータでOSPFの構築

概要

25/10/3　ダイナミックルーティングのひとつであるOSPFを用いて、異なるセグメント間での通信を試みました。

背景

• 先輩「osインストールかルータ触るかかどっちがいい？」
• 一年生「ルータがいいです！！！（意見完全一致）」

工夫したポイント

PassiveInterfaceによってルータとPC間の無駄な通信（Hello Packet等）を遮断する。

show running config実行結果

// Router1
interface GigabitEthernet0/0
 no ip address
!
interface GigabitEthernet0/1
 no ip address
!
interface GigabitEthernet0/2
 no ip address
!
interface GigabitEthernet0/3
 no ip address
!
interface GigabitEthernet0/4
 ip address 192.168.1.2 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/5
 ip address 192.168.2.1 255.255.255.0
 duplex auto
 speed auto
!
interface Vlan1
 no ip address
!
router ospf 1
 passive-interface GigabitEthernet0/4
 network 192.168.1.0 0.0.0.255 area 0
 network 192.168.2.0 0.0.0.255 area 0
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
!
!
!
!
line con 0
 no modem enable
line vty 0 4
 login
 transport input none
!
scheduler allocate 20000 1000
!
end
// Router2
interface GigabitEthernet0/0
 no ip address
!
interface GigabitEthernet0/1
 no ip address
!
interface GigabitEthernet0/2
 no ip address
!
interface GigabitEthernet0/3
 no ip address
!
interface GigabitEthernet0/4
 ip address 192.168.40.2 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/5
 ip address 192.168.3.2 255.255.255.0
 duplex auto
 speed auto
!
interface Vlan1
 no ip address
!
router ospf 1
 passive-interface GigabitEthernet0/4
 network 192.168.3.0 0.0.0.255 area 0
 network 192.168.40.0 0.0.0.255 area 0
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
line con 0
 no modem enable
line vty 0 4
 login
 transport input none
!
scheduler allocate 20000 1000
!
end



//Router3
hostname Router3
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
ethernet lmi ce
!
!
!
!
!
!
!
!
ip cef
no ipv6 cef
!
!
license udi pid C841M-4X-JSEC/K9 sn FGL211123MC
!
!
!
redundancy
!
interface GigabitEthernet0/0
 no ip address
!
interface GigabitEthernet0/1
 no ip address
!
interface GigabitEthernet0/2
 no ip address
!
interface GigabitEthernet0/3
 no ip address
!
interface GigabitEthernet0/4
 ip address 192.168.3.1 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/5
 ip address 192.168.2.2 255.255.255.0
 duplex auto
 speed auto
!
interface Vlan1
 no ip address
!
router ospf 1
 network 192.168.2.0 0.0.0.255 area 0
 network 192.168.3.0 0.0.0.255 area 0
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
!
!
!
!
line con 0
 no modem enable
line vty 0 4
 login
 transport input none
!
scheduler allocate 20000 1000
!
end

感想

• 菅原「無事pingが通りHappy！」
• 西村k「楽しかった！帰ります」
• 白波「楽しかったー！でも私のPCで192.168.4.0/24が割り当てられなかったのなんで？」