查看是否安装iproute软件包【默认下，装系统时都会自动安装进去】
[root@smart202 ~]# rpm -qa | grep iproute
iproute-2.6.9-3.EL4.7
[root@smart202 ~]# rpm -ql iproute 【安装位置】
/etc/iproute2
/etc/iproute2/rt_dsfield
/etc/iproute2/rt_dsfield.rt_config
/etc/iproute2/rt_protos
/etc/iproute2/rt_protos.rt_config
/etc/iproute2/rt_realms
/etc/iproute2/rt_realms.rt_config
/etc/iproute2/rt_scopes
/etc/iproute2/rt_scopes.rt_config
/etc/iproute2/rt_tables
/etc/iproute2/rt_tables.rt_config
.......
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常用命令：ip ,ip address,iproute
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ip
[root@smart202 ~]# ip link show
1: lo: mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:1c:c4:18:b5:ac brd ff:ff:ff:ff:ff:ff
3: eth1: mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:1c:f0:d5:56:aa brd ff:ff:ff:ff:ff:ff
4: sit0: mtu 1480 qdisc noop
link/sit 0.0.0.0 brd 0.0.0.0
[root@smart202 ~]# ip address show // 可以看到ipv4地址和ipv6地址
1: lo: mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:1c:c4:18:b5:ac brd ff:ff:ff:ff:ff:ff
inet 192.168.0.202/24 brd 192.168.0.255 scope global eth0
inet6 fe80::21c:c4ff:fe18:b5ac/64 scope link
valid_lft forever preferred_lft forever
3: eth1: mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:1c:f0:d5:56:aa brd ff:ff:ff:ff:ff:ff
inet 192.168.100.202/24 brd 192.168.100.255 scope global eth1
inet6 fe80::21c:f0ff:fed5:56aa/64 scope link
valid_lft forever preferred_lft forever
4: sit0: mtu 1480 qdisc noop
link/sit 0.0.0.0 brd 0.0.0.0
[root@smart202 ~]# ip link set eth1 down //关闭网卡eth1
[root@smart202 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1C:C4:18:B5:AC
inet addr:192.168.0.202 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::21c:c4ff:fe18:b5ac/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:151 errors:0 dropped:0 overruns:0 frame:0
TX packets:100 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:17199 (16.7 KiB) TX bytes:10042 (9.8 KiB)
Interrupt:177
..............
[root@smart202 ~]# ip link set eth1 up
[root@smart202 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1C:C4:18:B5:AC
inet addr:192.168.0.202 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::21c:c4ff:fe18:b5ac/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:206 errors:0 dropped:0 overruns:0 frame:0
TX packets:132 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:22652 (22.1 KiB) TX bytes:14474 (14.1 KiB)
Interrupt:177
eth1 Link encap:Ethernet HWaddr 00:1C:F0:D5:56:AA
inet addr:192.168.100.202 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::21c:f0ff:fed5:56aa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:160067 errors:0 dropped:0 overruns:0 frame:0
TX packets:297262 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15507892 (14.7 MiB) TX bytes:85681680 (81.7 Mi
[root@smart202 ~]# ip link set eth1 name wireless //给网卡重启名字，关闭状态下
SIOCSIFNAME: Device or resource busy
[root@smart202 ~]# ip link set eth1 down
[root@smart202 ~]# ip link set eth1 name wireless
[root@smart202 ~]# ip link set eth1 up
SIOCGIFFLAGS: No such device
[root@smart202 ~]# ip link set wireless up
[root@smart202 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1C:C4:18:B5:AC
inet addr:192.168.0.202 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::21c:c4ff:fe18:b5ac/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:382 errors:0 dropped:0 overruns:0 frame:0
TX packets:244 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:39503 (38.5 KiB) TX bytes:27382 (26.7 KiB)
Interrupt:177
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:1635 errors:0 dropped:0 overruns:0 frame:0
TX packets:1635 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3262921 (3.1 MiB) TX bytes:3262921 (3.1 MiB)
wireless Link encap:Ethernet HWaddr 00:1C:F0:D5:56:AA
inet addr:192.168.100.202 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::21c:f0ff:fed5:56aa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:163199 errors:0 dropped:0 overruns:0 frame:0
TX packets:301930 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15702653 (14.9 MiB) TX bytes:87469294 (83.4 MiB)
Interrupt:193
[root@smart202 ~]#
+++++++++++++++++
ip address
[root@smart202 ~]# ifconfig
。。。。。。。。
eth1 Link encap:Ethernet HWaddr 00:1C:F0:D5:56:AA
inet addr:192.168.100.202 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::21c:f0ff:fed5:56aa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:163989 errors:0 dropped:0 overruns:0 frame:0
TX packets:303101 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15751990 (15.0 MiB) TX bytes:87916544 (83.8 MiB)
Interrupt:193
[root@smart202 ~]#
[root@smart202 ~]# ip address add 1.1.1.1/24 broadcast + //增加一个IP地址
> dev eth1 label eth1:eth1:1
或者 使用这条命令#ip address add 2.2.2.2/24 broadcast + dev eth0 label eth0:1
[root@smart202 ~]# ip address show eth1
3: eth1: mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:1c:f0:d5:56:aa brd ff:ff:ff:ff:ff:ff
inet 192.168.100.202/24 brd 192.168.100.255 scope global eth1
inet 1.1.1.1/24 brd 1.1.1.255 scope global eth1:eth1:1 //同时还设置了它的广播地址
inet6 fe80::21c:f0ff:fed5:56aa/64 scope link
valid_lft forever preferred_lft forever
[root@smart202 ~]# ping 1.1.1.2 //访问LAN中的其他主机
PING 1.1.1.2 (1.1.1.2) 56(84) bytes of data.
64 bytes from 1.1.1.2: icmp_seq=0 ttl=128 time=1.42 ms
64 bytes from 1.1.1.2: icmp_seq=1 ttl=128 time=0.155 ms
64 bytes from 1.1.1.2: icmp_seq=2 ttl=128 time=0.155 ms
64 bytes from 1.1.1.2: icmp_seq=3 ttl=128 time=0.150 ms
--- 1.1.1.2 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3000ms
rtt min/avg/max/mdev = 0.150/0.470/1.421/0.549 ms, pipe 2
[root@smart202 ~]# ip address del 1.1.1.1/24 dev eth1 //删除掉刚才的设置
[root@smart202 ~]# ipconfig eth1
-bash: ipconfig: command not found
[root@smart202 ~]# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:1C:F0:D5:56:AA
inet addr:192.168.100.202 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::21c:f0ff:fed5:56aa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:177663 errors:0 dropped:0 overruns:0 frame:0
TX packets:323389 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:16605147 (15.8 MiB) TX bytes:95691506 (91.2 MiB)
Interrupt:193
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ip route
[root@smart202 ~]# ip route show
192.168.100.0/24 dev eth1 proto kernel scope link src 192.168.100.202
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.202
[root@smart202 ~]# ip route add 1.1.1.1/24 dev eth1
RTNETLINK answers: Invalid argument
[root@smart202 ~]# ip route add 1.1.1.0/24 via 192.168.100.1 dev eth1 //添加静态路由
[root@smart202 ~]# ip route show
192.168.100.0/24 dev eth1 proto kernel scope link src 192.168.100.202
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.202
1.1.1.0/24 via 192.168.100.1 dev eth1
[root@smart202 ~]# ip route add default via 192.168.100.1 dev eth1 //增加网关
[root@smart202 ~]# ip route show
192.168.100.0/24 dev eth1 proto kernel scope link src 192.168.100.202
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.202
1.1.1.0/24 via 192.168.100.1 dev eth1
default via 192.168.100.1 dev eth1
[root@smart202 ~]# ip route del 1.1.1.0/24
