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RedHat6.5网卡常见问题及解决方法

时间:2015-01-21 14:12:25 作者:qipeng 来源:万象系统之家 1. 扫描二维码随时看资讯 2. 请使用手机浏览器访问: https://m.xitongzhijia.net/xtjc/20150121/35461.html 手机查看 评论

  RedHat是运用广泛的Linux系统,在RedHat6.5的版本中,在联网的时候经常会遇到一些网卡问题,下面小编给大家整理了RedHat6.5网卡常见的问题及解决方法,希望对你有所帮助。

 RedHat6.5网卡常见问题及解决方法

  1、找不到eth0文件

  在使用RedHat6.5,新装好的系统,发现没有eth0网卡,默认的第一个网卡是Auto-eth0

  [root@rac01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-Auto_eth0

  TYPE=Ethernet

  BOOTPROTO=none

  IPADDR=10.10.10.110

  PREFIX=24

  GATEWAY=10.10.10.111

  DEFROUTE=yes

  IPV4_FAILURE_FATAL=yes

  IPV6INIT=no

  NAME=eth0

  UUID=86d44060-4579-48cc-b85b-219a206ca37c

  ONBOOT=yes

  HWADDR=00:50:56:95:09:76

  LAST_CONNECT=1411004329

  解决方法:

  直接更名ifcfg-Auto_eth0文件为eth0,重启网卡后会发现,网卡名已经变为eth0

  [root@rac01 ~]# service network restart

  Bringing up loopback interface: [ OK ]

  Bringing up interface eth0: Active connection state: activated

  2、ifconfig 发现网卡服务名并未更改

  [root@rac01 ~]# ifconfig

  Auto_eth0 Link encap:Ethernet HWaddr 00:50:56:95:09:76

  inet addr:10.10.10.110 Bcast:10.10.10.111 Mask:255.255.255.0

  inet6 addr: fe80::250:56ff:fe95:976/64 Scope:Link

  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

  RX packets:484 errors:0 dropped:0 overruns:0 frame:0

  TX packets:57 errors:0 dropped:0 overruns:0 carrier:0

  collisions:0 txqueuelen:1000

  RX bytes:40095 (39.1 KiB) TX bytes:6271 (6.1 KiB)

  解决方法:

  每次更改RedHat的网卡信息,RedHat会自动的将网卡的MAC地址和对应的网卡服务名关系记录在/etc/udev/rules.d/70-persistent-net.rules中,修改里面的对应服务名即可

  [root@rac01 ~]# vim /etc/udev/rules.d/70-persistent-net.rules

  # This file was automatically generated by the /lib/udev/write_net_rules

  # program, run by the persistent-net-generator.rules rules file.

  #

  # You can modify it, as long as you keep each rule on a single

  # line, and change only the value of the NAME= key.

  # PCI device 0x15ad:0x07b0 (vmxnet3)

  SUBSYSTEM==“net”, ACTION==“add”, DRIVERS==“?*”, ATTR{address}==“00:0c:29:1e:f6:ad”, ATTR{type}==“1”, KERNEL==“eth*”, NAME=“eth0”

  修改完成后需重启一下系统,再次查看网卡服务名已经更改

  [root@rac01 ~]# ifconfig

  eth0 Link encap:Ethernet HWaddr 00:50:56:95:09:76

  inet addr:10.109.67.81 Bcast:10.109.67.255 Mask:255.255.255.0

  inet6 addr: fe80::250:56ff:fe95:976/64 Scope:Link

  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

  RX packets:985 errors:0 dropped:0 overruns:0 frame:0

  TX packets:61 errors:0 dropped:0 overruns:0 carrier:0

  collisions:0 txqueuelen:1000

  RX bytes:74395 (72.6 KiB) TX bytes:6527 (6.3 KiB)

  3、网卡eth0被删除后,新加的网卡成了eth1,如何让从eth0开始

  [root@rac01 ~]# ifconfig

  eth1 Link encap:Ethernet HWaddr 00:50:56:95:09:76

  inet addr:10.10.10.110 Bcast:10.10.10.111 Mask:255.255.255.0

  inet6 addr: fe80::250:56ff:fe95:976/64 Scope:Link

  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

  RX packets:830 errors:0 dropped:0 overruns:0 frame:0

  TX packets:57 errors:0 dropped:0 overruns:0 carrier:0

  collisions:0 txqueuelen:1000

  RX bytes:63700 (62.2 KiB) TX bytes:6259 (6.1 KiB)

  eth2 Link encap:Ethernet HWaddr 00:0C:29:1E:F6:B7

  inet addr:10.10.10.120 Bcast:10.10.10.111Mask:255.255.255.0

  inet6 addr: fe80::20c:29ff:fe1e:f6b7/64 Scope:Link

  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

  RX packets:777 errors:0 dropped:0 overruns:0 frame:0

  TX packets:11 errors:0 dropped:0 overruns:0 carrier:0

  collisions:0 txqueuelen:1000

  RX bytes:54938 (53.6 KiB) TX bytes:746 (746.0 b)

  解决方法:

  同2问题类似,即可以手动的修改70-persistent-net.rules文件,将对应的MAC地址与网卡序号改成想要的,也可以直接删除该文件,重启系统后,RedHat会自动的创建该文件,并从0开始计数。

  删除文件,重启系统

  [root@rac01 ~]# mv /etc/udev/rules.d/70-persistent-net.rules /etc/udev/rules.d/7

  0-persistent-net.rules.bak

  [root@rac01 ~]# reboot

  再次查看,会发现已经从eht0开始

  [root@rac01 ~]# ifconfig

  eth0 Link encap:Ethernet HWaddr 00:50:56:95:09:76

  inet addr:10.109.67.81 Bcast:10.109.67.255 Mask:255.255.255.0

  inet6 addr: fe80::250:56ff:fe95:976/64 Scope:Link

  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

  RX packets:206 errors:0 dropped:0 overruns:0 frame:0

  TX packets:68 errors:0 dropped:0 overruns:0 carrier:0

  collisions:0 txqueuelen:1000

  RX bytes:19282 (18.8 KiB) TX bytes:7215 (7.0 KiB)

  eth1 Link encap:Ethernet HWaddr 00:0C:29:1E:F6:B7

  inet addr:10.109.67.83 Bcast:10.109.67.255 Mask:255.255.255.0

  inet6 addr: fe80::20c:29ff:fe1e:f6b7/64 Scope:Link

  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

  RX packets:131 errors:0 dropped:0 overruns:0 frame:0

  TX packets:11 errors:0 dropped:0 overruns:0 carrier:0

  collisions:0 txqueuelen:1000

  RX bytes:8736 (8.5 KiB) TX bytes:746 (746.0 b)

  4、每次重启网卡,总是提示

  Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/9

  此时网卡也可以正常通信,这个是因为RedHat自己开发的NetworkManager管理工具和/etc/sysconfig/network-scripts/ifcfg-ethx配置不同步造成的。

  解决方法:

  要消除这个提示,请关闭NetworkManager服务即可:

  [root@rac01 ~]# service network restart

  Shutting down loopback interface: [ OK ]

  Bringing up loopback interface: [ OK ]

  Bringing up interface eth0: Active connection state: activated

  Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/2 [ OK ]

  Bringing up interface eth1: Active connection state: activated

  Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/3 [ OK ]

  关闭NetworkManager服务

  [root@rac01 ~]# service NetworkManager stop

  Stopping NetworkManager daemon: [ OK ]

  再次重启网卡

  [root@rac01 ~]# service network restart

  Shutting down loopback interface: [ OK ]

  Bringing up loopback interface: [ OK ]

  Bringing up interface eth0: [ OK ]

  Bringing up interface eth1: [ OK ]

  5、重启网卡出现提示:

  Bringing up interface eth0: Determining if ip address 10.109.67.81 is already in use for device eth0.。。

  [ OK ]

  Bringing up interface eth1: Determining if ip address 10.109.67.83 is already in use for device eth1.。。

  [ OK ]

  该警告一般是由于网卡解析arp协议导致的,可在网卡的配置文件中加入ARPCHECK=NO参数来屏蔽该检查

  [root@rac01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0

  TYPE=Ethernet

  BOOTPROTO=none

  IPADDR=10.109.67.81

  PREFIX=24

  GATEWAY=10.109.67.254

  DEFROUTE=yes

  IPV4_FAILURE_FATAL=yes

  IPV6INIT=no

  NAME=eth0

  UUID=86d44060-4579-48cc-b85b-219a206ca37c

  ONBOOT=yes

  HWADDR=00:50:56:95:09:76

  LAST_CONNECT=1411004329

  ARPCHECK=no

  再次启动网卡,一切正常

  [root@rac01 ~]# service network restart

  Shutting down interface eth0: [ OK ]

  Shutting down interface eth1: [ OK ]

  Shutting down loopback interface: [ OK ]

  Bringing up loopback interface: [ OK ]

  Bringing up interface eth0: [ OK ]

  Bringing up interface eth1: [ OK ]

  上面就是RedHat6.5网卡常见问题及解决方法的介绍了,如果你在联网的时候出现连接不上的情况,可以看看是不是网卡出现了问题,可用本文介绍的相关方法进行处理。

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