admin Linux一块网卡添加多个IP地址
环境: RHEL6.4 需求: Linux一块网卡添加多个IP地址
一、临时生效
1.1 网卡eth0添加一个IP地址1.2 修改eth0:0的广播地址
二、永久生效
2.1 编辑ifcfg-eth0:02.2 重启网卡生效配置
当前eth0的配置:
# ifconfigeth0 Link encap:Ethernet HWaddr 2A:2E:BE:CF:8C:DC inet addr:192.168.99.159 Bcast:192.168.99.255 Mask:255.255.255.0 inet6 addr: fe80::282e:beff:fecf:8cdc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:32955247 errors:0 dropped:0 overruns:0 frame:0 TX packets:3800040 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:15964502776 (14.8 GiB) TX bytes:11315742252 (10.5 GiB) Interrupt:247 一、临时生效1.1 网卡eth0添加一个IP地址ifconfig eth0 add 10.10.10.159
查看:
# ifconfig -aeth0 Link encap:Ethernet HWaddr 2A:2E:BE:CF:8C:DC inet addr:192.168.99.159 Bcast:192.168.99.255 Mask:255.255.255.0 inet6 addr: fe80::282e:beff:fecf:8cdc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:32958394 errors:0 dropped:0 overruns:0 frame:0 TX packets:3800101 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:15965401503 (14.8 GiB) TX bytes:11315752846 (10.5 GiB) Interrupt:247 eth0:0 Link encap:Ethernet HWaddr 2A:2E:BE:CF:8C:DC inet addr:10.10.10.159 Bcast:192.168.99.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:247
发现多了一个基于eth0的eth0:0的虚拟接口。
1.2 修改eth0:0的广播地址ifconfig eth0:0 broadcast 10.10.10.255
查看:
# ifconfig -aeth0 Link encap:Ethernet HWaddr 2A:2E:BE:CF:8C:DC inet addr:192.168.99.159 Bcast:192.168.99.255 Mask:255.255.255.0 inet6 addr: fe80::282e:beff:fecf:8cdc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:32959543 errors:0 dropped:0 overruns:0 frame:0 TX packets:3800126 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:15965717592 (14.8 GiB) TX bytes:11315758056 (10.5 GiB) Interrupt:247 eth0:0 Link encap:Ethernet HWaddr 2A:2E:BE:CF:8C:DC inet addr:10.10.10.159 Bcast:10.10.10.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:247
成功修改了eth0:0的广播地址。
二、永久生效2.1 编辑ifcfg-eth0:0
配置文件在/etc/sysconfig/network-scripts/路径下。
# cd /etc/sysconfig/network-scripts/# more ifcfg-eth0DEVICE=eth0TYPE=EthernetONBOOT=yesNM_CONTROLLED=yesBOOTPROTO=staticIPADDR=192.168.99.159NETMASK=255.255.255.0# more ifcfg-eth0:0DEVICE=eth0:0TYPE=EthernetONBOOT=yesNM_CONTROLLED=yesBOOTPROTO=staticIPADDR=10.10.10.159NETMASK=255.255.255.0
如果还想添加IP地址,可以同理编辑ifcfg-eth0:1文件.
2.2 重启网卡生效配置2.2.1 可以重启整个网络服务:service network restart2.2.2 也可针对eth0网卡,关闭再启动:ifdown eth0ifup eth02.2.3 最后看eth0网卡信息如下:
ifconfig查看eth0的网卡信息:
# ifconfigeth0 Link encap:Ethernet HWaddr 2A:2E:BE:CF:8C:DC inet addr:192.168.99.159 Bcast:192.168.99.255 Mask:255.255.255.0 inet6 addr: fe80::282e:beff:fecf:8cdc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:32989071 errors:0 dropped:0 overruns:0 frame:0 TX packets:3800770 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:15974202540 (14.8 GiB) TX bytes:11315842294 (10.5 GiB) Interrupt:247 eth0:0 Link encap:Ethernet HWaddr 2A:2E:BE:CF:8C:DC inet addr:10.10.10.159 Bcast:10.10.10.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:247 eth0:1 Link encap:Ethernet HWaddr 2A:2E:BE:CF:8C:DC inet addr:10.11.11.159 Bcast:10.11.11.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:247
