一、查看当前ip地址

[root@localhost ~]# ifconfig

eth2 ????? Link encap:Ethernet? HWaddr 00:10:18:AB:08:C4?
????????? inet addr:210.32.137.153
? Bcast:210.32.137.255? Mask:255.255.255.0
????????? UP BROADCAST RUNNING MULTICAST? MTU:1500? Metric:1
????????? RX packets:1034809 errors:0 dropped:0 overruns:0 frame:0
????????? TX packets:1057 errors:0 dropped:0 overruns:0 carrier:0
????????? collisions:0 txqueuelen:1000
????????? RX bytes:75945272 (72.4 MiB)? TX bytes:1117565 (1.0 MiB)
????????? Interrupt:177 Memory:9a000000-9a7fffff

eth3????? Link encap:Ethernet? HWaddr 00:10:18:AB:08:C6?
????????? inet addr:10.1.2.11? Bcast:10.1.2.255? Mask:255.255.255.0
????????? UP BROADCAST RUNNING MULTICAST? MTU:1500? Metric:1
????????? RX packets:697242 errors:0 dropped:0 overruns:0 frame:0
????????? TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
????????? collisions:0 txqueuelen:1000
????????? RX bytes:45557850 (43.4 MiB)? TX bytes:3457 (3.3 KiB)
????????? Interrupt:178 Memory:9a800000-9affffff

lo??????? Link encap:Local Loopback?
????????? inet addr:127.0.0.1? Mask:255.0.0.0
????????? UP LOOPBACK RUNNING? MTU:16436? Metric:1
????????? RX packets:15555 errors:0 dropped:0 overruns:0 frame:0
????????? TX packets:15555 errors:0 dropped:0 overruns:0 carrier:0
????????? collisions:0 txqueuelen:0
????????? RX bytes:4651095 (4.4 MiB)? TX bytes:4651095 (4.4 MiB)

usb0????? Link encap:Ethernet? HWaddr 5E:F3:FC:7D:88:8F?
????????? inet addr:169.254.95.120? Bcast:169.254.95.255? Mask:255.255.255.0
????????? UP BROADCAST RUNNING MULTICAST? MTU:1500? Metric:1
????????? RX packets:31769 errors:0 dropped:0 overruns:0 frame:0
????????? TX packets:15930 errors:0 dropped:0 overruns:0 carrier:0
????????? collisions:0 txqueuelen:1000
????????? RX bytes:2146178 (2.0 MiB)? TX bytes:760683 (742.8 KiB)

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二、查看当前ip地址配置文件

[root@localhost ~]# more /etc/sysconfig/network-scripts/ifcfg-eth2

# Broadcom Corporation NetXtreme II BCM57711 10-Gigabit PCIe
DEVICE=eth2
BOOTPROTO=none
HWADDR=00:10:18:AB:08:C4
ONBOOT=yes
HOTPLUG=no
TYPE=Ethernet
NETMASK=255.255.255.0
IPADDR=210.32.137.153

USERCTL=no
IPV6INIT=no
PEERDNS=yes
GATEWAY=210.32.137.1

?

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?三、修改ip地址配置文件

[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth2

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?四、重启系统使其生效

[root@localhost ~]# reboot