我的博客已迁移到xdoujiang.com请去那边和我交流
==================================Debian=======================================
1、发行版本
cat /etc/debian_version
5.0.2
2、内核
uname -r
2.6.18-6-amd64
3、机型
dmidecode -s system-product-name
PowerEdge R710
4、安装软件包
apt-get -y install net-tools
5、使用ip命令查看网络接口状态
1)ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether 84:2b:2b:48:ab:12 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 84:2b:2b:48:ab:14 brd ff:ff:ff:ff:ff:ff
inet 192.168.35.133/24 brd 192.168.35.255 scope global eth1
4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 84:2b:2b:48:ab:16 brd ff:ff:ff:ff:ff:ff
5: eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 84:2b:2b:48:ab:18 brd ff:ff:ff:ff:ff:ff
查看结果是eth1已经有ip 但eth0还没有ip及网络接口也没有打开
2)参数说明
qdisc pfifo_fast
qlen
mtu
qdisc noop
up
down
qdisc mq
6、如果没打开eth0网络接口的话使用mii-tool命令后结果是这样的
mii-tool
SIOCGMIIPHY on 'eth0' failed: Resource temporarily unavailable
eth1: negotiated 1000baseT-FD flow-control, link ok
SIOCGMIIPHY on 'eth2' failed: Resource temporarily unavailable
SIOCGMIIPHY on 'eth3' failed: Resource temporarily unavailable
7、使用ifconfig命令打开eth0网络接口
ifconfig eth0 up
8、再次使用mii-tool命令查看网线是否连接，这次看到显示eth0是no link状态 判定网线没接上
eth0: no link
eth1: negotiated 1000baseT-FD flow-control, link ok
eth2: no link
eth3: no link
9、找idc工程师让他们接上网线
==================================Centos=======================================
1、发行版本
cat /etc/redhat-release
CentOS release 6.5 (Final)
2、内核
uname -r
2.6.32-431.el6.x86_64
3、机型
dmidecode -s system-product-name
PowerEdge R610
4、安装软件包
yum -y install net-tools
5、使用ip命令查看网络接口状态
ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:22:19:63:97:5e brd ff:ff:ff:ff:ff:ff
inet 111.222.333.444/24 brd 111.222.333.444 scope global eth0
inet6 fe80::222:19ff:fe63:975e/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:22:19:63:97:60 brd ff:ff:ff:ff:ff:ff
inet 10.18.22.190/24 brd 10.18.22.255 scope global eth1
inet6 fe80::222:19ff:fe63:9760/64 scope link
valid_lft forever preferred_lft forever
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:22:19:63:97:62 brd ff:ff:ff:ff:ff:ff
inet 111.222.333.444/25 brd 111.222.333.444 scope global eth2
inet6 fe80::222:19ff:fe63:9762/64 scope link
valid_lft forever preferred_lft forever
5: em4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 00:22:19:63:97:64 brd ff:ff:ff:ff:ff:ff
6、如果没打开em4网络接口的话使用mii-tool命令后结果是这样的
mii-tool em4
SIOCGMIIPHY on 'em4' failed: Resource temporarily unavailable
7、使用ifconfig命令打开eth0网络接口
ifconfig em4 up
8、找idc工程师让他们接上网线后查看
mii-tool em4
em4: negotiated 100baseTx-FD flow-control, link ok
参考文章
http://events.linuxfoundation.org/sites/events/files/slides/Linux_traffic_control.pdf
