キャンパスネットワークの設定(3)まででUplinkfastの設定まで完了しました。
今回はコア層を追加して、サーバファームとコア層のOSPFエリアを分割してみます。
コンフィグレーションを抜粋すると下記の通りになります。
[CSW1]
interface Loopback0 ip address 1.1.1.3 255.255.255.255 ! interface Ethernet0/0 ip address 192.168.1.1 255.255.255.0 full-duplex ! interface Ethernet0/1 ip address 192.168.4.1 255.255.255.0 full-duplex ! interface Ethernet0/2 ip address 192.168.5.1 255.255.255.0 full-duplex ! interface Ethernet0/3 ip address 172.16.10.1 255.255.255.0 full-duplex ! router ospf 1 log-adjacency-changes network 172.16.10.0 0.0.0.255 area 2 network 192.168.1.0 0.0.0.255 area 0 network 192.168.4.0 0.0.0.255 area 0 network 192.168.5.0 0.0.0.255 area 0
[CSW2]
interface Loopback0 ip address 1.1.1.4 255.255.255.255 ! interface Ethernet0/0 ip address 192.168.2.1 255.255.255.0 full-duplex ! interface Ethernet0/1 ip address 192.168.3.1 255.255.255.0 full-duplex ! interface Ethernet0/2 ip address 192.168.5.2 255.255.255.0 full-duplex ! interface Ethernet0/3 ip address 172.16.20.1 255.255.255.0 full-duplex ! router ospf 1 log-adjacency-changes network 172.16.20.0 0.0.0.255 area 2 network 192.168.2.0 0.0.0.255 area 0 network 192.168.3.0 0.0.0.255 area 0 network 192.168.5.0 0.0.0.255 area 0
[DSW1]
interface Loopback0 ip address 1.1.1.1 255.255.255.255 ! interface FastEthernet0/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet0/1 no ip address shutdown duplex auto speed auto ! interface FastEthernet1/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet2/0 switchport mode trunk duplex full speed 100 ! interface FastEthernet2/1 switchport mode trunk duplex full speed 100 ! interface FastEthernet2/2 no switchport ip address 192.168.1.2 255.255.255.0 ip ospf cost 10 duplex full speed 10 ! interface FastEthernet2/3 switchport mode trunk duplex full speed 100 ! interface FastEthernet2/4 no switchport ip address 192.168.3.2 255.255.255.0 ip ospf cost 10 duplex full speed 10 ! interface Vlan1 no ip address ! interface Vlan10 ip address 10.0.10.1 255.255.255.0 standby 1 ip 10.0.10.254 standby 1 priority 200 standby 1 preempt ! interface Vlan20 ip address 10.0.20.1 255.255.255.0 standby 2 ip 10.0.20.254 ! router ospf 1 log-adjacency-changes redistribute connected subnets passive-interface FastEthernet2/0 passive-interface FastEthernet2/1 passive-interface FastEthernet2/3 network 192.168.1.0 0.0.0.255 area 0 network 192.168.3.0 0.0.0.255 area 0
[DSW2]
interface Loopback0 ip address 1.1.1.2 255.255.255.255 ! interface FastEthernet0/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet0/1 no ip address shutdown duplex auto speed auto ! interface FastEthernet1/0 no ip address shutdown duplex auto speed auto ! interface FastEthernet2/0 switchport mode trunk duplex full speed 100 ! interface FastEthernet2/1 switchport mode trunk duplex full speed 100 ! interface FastEthernet2/2 no switchport ip address 192.168.2.2 255.255.255.0 ip ospf cost 10 duplex full speed 10 ! interface FastEthernet2/3 switchport mode trunk duplex full speed 100 ! interface FastEthernet2/4 no switchport ip address 192.168.4.2 255.255.255.0 ip ospf cost 10 duplex full speed 10 ! interface Vlan1 no ip address ! interface Vlan10 ip address 10.0.10.2 255.255.255.0 standby 1 ip 10.0.10.254 ! interface Vlan20 ip address 10.0.20.2 255.255.255.0 standby 2 ip 10.0.20.254 standby 2 priority 200 standby 2 preempt standby 2 track FastEthernet2/2 150 ! router ospf 1 log-adjacency-changes redistribute connected subnets passive-interface FastEthernet2/0 passive-interface FastEthernet2/1 passive-interface FastEthernet2/3 network 192.168.2.0 0.0.0.255 area 0 network 192.168.4.0 0.0.0.255 area 0
DSW1でのOSPFデータベースを見てみると、Area2への情報はType3で受け取っています。他方PC側はType-5で受け取っています。
DSW1#sh ip ospf database OSPF Router with ID (1.1.1.1) (Process ID 1) Router Link States (Area 0) Link ID ADV Router Age Seq# Checksum Link count 1.1.1.1 1.1.1.1 1819 0x80000006 0x00F756 2 1.1.1.2 1.1.1.2 1839 0x80000006 0x002C1C 2 1.1.1.3 1.1.1.3 1535 0x80000006 0x008CC5 3 1.1.1.4 1.1.1.4 1493 0x80000007 0x00A0AD 3 Net Link States (Area 0) Link ID ADV Router Age Seq# Checksum 192.168.1.1 1.1.1.3 1535 0x80000002 0x0015A8 192.168.2.1 1.1.1.4 1492 0x80000004 0x00189F 192.168.3.1 1.1.1.4 1493 0x80000002 0x0003B6 192.168.4.1 1.1.1.3 1535 0x80000004 0x00FDB9 192.168.5.2 1.1.1.4 1493 0x80000002 0x00FEB5 Summary Net Link States (Area 0) Link ID ADV Router Age Seq# Checksum 172.16.10.0 1.1.1.3 1535 0x80000002 0x00CD97 172.16.10.0 1.1.1.4 1507 0x80000002 0x002C2E 172.16.20.0 1.1.1.3 1550 0x80000002 0x00C38D 172.16.20.0 1.1.1.4 1754 0x80000002 0x005901 172.16.30.0 1.1.1.3 1550 0x80000002 0x0055F1 172.16.30.0 1.1.1.4 1507 0x80000002 0x004FF6 Type-5 AS External Link States Link ID ADV Router Age Seq# Checksum Tag 1.1.1.1 1.1.1.1 1834 0x80000002 0x0099FD 0 1.1.1.2 1.1.1.2 1852 0x80000002 0x00890C 0 10.0.10.0 1.1.1.1 1834 0x80000002 0x00D6B0 0 10.0.10.0 1.1.1.2 1853 0x80000002 0x00D0B5 0 10.0.20.0 1.1.1.1 1834 0x80000002 0x006815 0 10.0.20.0 1.1.1.2 1852 0x80000002 0x00621A 0
今回はここまでです。