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标题: CentOS6_配置双网卡 [打印本页]
作者: admin    时间: 2019-10-21 10:05     标题: CentOS6_配置双网卡

操心系统的版本信息： [root@localhost ~]# cat /etc/redhat-release CentOS release 6.9 (Final) [root@localhost ~]# [root@localhost ~]# uname -r 2.6.32-696.el6.x86_64 添加网卡后，重启network服务： [root@localhost ~]# service network restart 先查看可用的网卡名： [root@localhost ~]# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0C:29:2B:17:3A inet addr:192.168.168.130 Bcast:192.168.168.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe2b:173a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:190 errors:0 dropped:0 overruns:0 frame:0 TX packets:141 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:17302 (16.8 KiB) TX bytes:19262 (18.8 KiB) eth1 Link encap:Ethernet HWaddr 00:0C:29:14:DF:D5 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) 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:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) 新网卡（eth1）可以立刻检测出来，但要创建配置文件： [root@localhost ~]# cd /etc/sysconfig/network-scripts/ [root@localhost network-scripts]# ls ifcfg-* ifcfg-eth0 ifcfg-lo [root@localhost network-scripts]# [root@localhost network-scripts]# cp ifcfg-eth0 ifcfg-eth1 [root@localhost network-scripts]# [root@localhost network-scripts]# ls ifcfg-* ifcfg-eth0 ifcfg-eth1 ifcfg-lo 原网卡（eth0）的配置文件： [root@localhost network-scripts]# cat ifcfg-eth0 DEVICE=eth0 TYPE=Ethernet UUID=1d6644ba-ea2f-47e9-af17-0119ea72d20b ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=static HWADDR=00:0C:29:2B:17:3A DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no IPADDR=192.168.168.130 NETMASK=255.255.255.0 GATEWAY=192.168.168.2 DNS1=114.114.114.114 NAME="System eth0" 修改新网卡（eth1）的配置文件： [root@localhost network-scripts]# cat ifcfg-eth1 DEVICE=eth1 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=static DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no IPADDR=192.168.169.131 NETMASK=255.255.255.0 NAME="System eth1" 笺注： 文件里的eth0要改为eth1； UUID那行要删除； HWADDR那行也要删除； 新网卡不用配置网关和DNS地址； 两张网卡理应使用不同的IP网段； 重启network服务： [root@localhost ~]# service network restart 查看所有网卡的IP地址： [root@localhost network-scripts]# ifconfig eth0 Link encap:Ethernet HWaddr 00:0C:29:2B:17:3A inet addr:192.168.168.130 Bcast:192.168.168.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe2b:173a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1154 errors:0 dropped:0 overruns:0 frame:0 TX packets:365 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:90016 (87.9 KiB) TX bytes:47090 (45.9 KiB) eth1 Link encap:Ethernet HWaddr 00:0C:29:14:DF:D5 inet addr:192.168.169.131 Bcast:192.168.169.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe14:dfd5/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:11 errors:0 dropped:0 overruns:0 frame:0 TX packets:29 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:870 (870.0 b) TX bytes:1962 (1.9 KiB) 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:65536 Metric:1 RX packets:4 errors:0 dropped:0 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:408 (408.0 b) TX bytes:408 (408.0 b) 至此，服务器既可以连接公网，也可以跟不同IP网段的主机进行通讯了： [root@localhost ~]# ping -c3 www.baidu.com PING www.a.shifen.com (14.215.177.39) 56(84) bytes of data. 64 bytes from 14.215.177.39: icmp_seq=1 ttl=128 time=33.5 ms 64 bytes from 14.215.177.39: icmp_seq=2 ttl=128 time=47.8 ms 64 bytes from 14.215.177.39: icmp_seq=3 ttl=128 time=27.0 ms --- www.a.shifen.com ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2052ms rtt min/avg/max/mdev = 27.090/36.162/47.807/8.651 ms [root@localhost ~]# ping -c3 192.168.168.135 PING 192.168.168.135 (192.168.168.135) 56(84) bytes of data. 64 bytes from 192.168.168.135: icmp_seq=1 ttl=64 time=15.0 ms 64 bytes from 192.168.168.135: icmp_seq=2 ttl=64 time=1.72 ms 64 bytes from 192.168.168.135: icmp_seq=3 ttl=64 time=0.775 ms --- 192.168.168.135 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2029ms rtt min/avg/max/mdev = 0.775/5.841/15.019/6.501 ms [root@localhost ~]# ping -c3 192.168.169.136 PING 192.168.169.136 (192.168.169.136) 56(84) bytes of data. 64 bytes from 192.168.169.136: icmp_seq=1 ttl=128 time=16.0 ms 64 bytes from 192.168.169.136: icmp_seq=2 ttl=128 time=0.969 ms 64 bytes from 192.168.169.136: icmp_seq=3 ttl=128 time=0.835 ms --- 192.168.169.136 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2013ms rtt min/avg/max/mdev = 0.835/5.945/16.033/7.133 ms 相关文章： CentOS6_网络基础 CentOS7_配置双网卡 CentOS8_配置双网卡可参考：ESXI6.5_虚拟机端口组



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