Tools:ifconfig(ipconfig)(1)

UNIX系のifconfig、Windows系のipconfigコマンドは、手元のPCやサーバーのLANインターフェースの設定状況を確認するときに使います。

■Windowsでのipconfig出力例
C:>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : PC576034341186
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter ローカル エリア接続:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethern
et
Physical Address. . . . . . . . . : 00-17-A4-E6-34-CF

Ethernet adapter ワイヤレス ネットワーク接続 4:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : CG-WLCB54GPX
Physical Address. . . . . . . . . : 00-0A-79-A6-B1-BF
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.36
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.2
DNS Servers . . . . . . . . . . . : 192.168.0.2
192.168.0.1
Primary WINS Server . . . . . . . : 192.168.0.145
Lease Obtained. . . . . . . . . . : 2007年9月10日 5:05:45
Lease Expires . . . . . . . . . . : 2007年9月13日 5:05:45

C:>
■MacOS Xでのifconfigの出力例
taniyama$ ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
inet 127.0.0.1 netmask 0xff000000
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:19:e3:3f:69:81
media: autoselect status: inactive
supported media: autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,hw-loopback> 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,hw-loopback> 100baseTX <full-duplex,flow-control> 1000baseT <full-duplex> 1000baseT <full-duplex,hw-loopback> 1000baseT <full-duplex,flow-control> none
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21b:63ff:fe09:c670%en1 prefixlen 64 scopeid 0x5
inet 192.168.0.35 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:1b:63:09:c6:70
media: autoselect status: active
supported media: autoselect
wlt1: flags=41<UP,RUNNING> mtu 1500
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 2030
lladdr 00:1b:63:ff:fe:84:b4:64
media: autoselect <full-duplex> status: inactive
supported media: autoselect <full-duplex>
en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::201:23ff:fe45:6789%en2 prefixlen 64 scopeid 0x8
inet 10.37.129.2 netmask 0xffffff00 broadcast 10.37.129.255
ether 00:01:23:45:67:89
media: autoselect status: active
supported media: autoselect
en3: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::210:32ff:fe54:7698%en3 prefixlen 64 scopeid 0x9
inet 10.211.55.2 netmask 0xffffff00 broadcast 10.211.55.255
ether 00:10:32:54:76:98
media: autoselect status: active
supported media: autoselect
taniyama$