ネットワーク > 設定全般

ネットワーク設定全般について。

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ホストのインターフェース情報

Linuxの場合

[root@centos01 ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0C:29:DE:D4:3F
          inet addr:172.24.108.192  Bcast:172.24.108.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fede:d43f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:16620 errors:0 dropped:0 overruns:0 frame:0
          TX packets:547 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1145771 (1.0 MiB)  TX bytes:77893 (76.0 KiB)
          Interrupt:59 Base address:0x2000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1767 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1767 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:3421480 (3.2 MiB)  TX bytes:3421480 (3.2 MiB)

Windowsの場合

> ipconfig
★編集中★

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ゲートウェイ

[root@el-vb001 ~]#  cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=el-vb001.hoge.my.local
GATEWAY=192.168.1.254

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名前解決

DNSサーバ

[root@el-vb001 ~]# cat /etc/resolv.conf
search hoge.my.local
nameserver 192.168.1.254

ローカルファイル名前解決

[root@el-vb001 ~]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1       localhost.localdomain localhost
::1             localhost6.localdomain6 localhost6

192.168.1.201   el-vb001.hoge.my.local el-vb001

名前解決の順序の指定ファイル

[root@el-vb001 ~]# cat /etc/nsswitch.conf
#
# /etc/nsswitch.conf
: (省略)
#group:     db files nisplus nis

passwd:     files
shadow:     files
group:      files

#hosts:     db files nisplus nis dns
hosts:      files dns

bootparams: nisplus [NOTFOUND=return] files

ethers:     files
netmasks:   files
networks:   files
protocols:  files
rpc:        files
services:   files

netgroup:   nisplus

publickey:  nisplus

automount:  files nisplus
aliases:    files nisplus

http://itpro.nikkeibp.co.jp/free/ola/olaacceptor.jsp

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リンクアップ情報

[root@el-vb001 ~]# ethtool eth0
Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 1000Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        Supports Wake-on: umbg
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes 

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経路情報

[root@el-vb001 ~]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     *               255.255.255.0   U     0      0        0 eth0
169.254.0.0     *               255.255.0.0     U     0      0        0 eth0
default         192.168.1.254   0.0.0.0         UG    0      0        0 eth0

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最終更新日 : [2009-09-12]