kvm虚拟化配置vlan网络模式，本文以新增2个vlan为例讲解

前提：

一、在物理机上

1、检查是否支持8021q

[root@node1 ~]# lsmod | grep 8021q 8021q 25317 0 garp 7152 1 8021q

2、在物理机上增加2个vlan( 注意前提是这2个vlan必须在物理交换机上面已经存在）,必须每次执行这些，并重启网络。

[root@node1 ~]# vconfig add eth1 401 Added VLAN with VID == 401 to IF -:eth1:- [root@node1 ~]# vconfig add eth1 402 Added VLAN with VID == 402 to IF -:eth1:-

3、验证如下：

[root@node1 ~]#ifconfig vnet0 Link encap:Ethernet HWaddr FE:54:00:35:92:92 inet6 addr: fe80::fc54:ff:fe35:9292/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:496 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:300 (300.0 b) TX bytes:26240 (25.6 KiB) vnet1 Link encap:Ethernet HWaddr FE:54:00:39:D0:41 inet6 addr: fe80::fc54:ff:fe39:d041/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:490 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:300 (300.0 b) TX bytes:25896 (25.2 KiB)

4、增加这2个vlan的配置

[root@node1 network-scripts]# vi ifcfg-br401 DEVICE="br401" TYPE=Bridge ONBOOT="yes" [root@node1 network-scripts]# vi ifcfg-eth1.401 DEVICE="eth1.401" BRIDGE="br401" ONBOOT="yes [root@node1 network-scripts]# vi ifcfg-br402 DEVICE="br402" TYPE=Bridge ONBOOT="yes" [root@node1 network-scripts]# vi ifcfg-eth1.402 DEVICE="eth1.402" BRIDGE="br402" ONBOOT="yes

5、重启网络

[root@node1 ~]# /etc/init.d/network restart

6、重启网络之后，验证如下：

[root@node1 ~]# ifconfig br401 Link encap:Ethernet HWaddr 5C:F3:FC:B7:DF:0E inet6 addr: fe80::5ef3:fcff:feb7:df0e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:468 (468.0 b) br402 Link encap:Ethernet HWaddr 5C:F3:FC:B7:DF:0E inet6 addr: fe80::5ef3:fcff:feb7:df0e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:468 (468.0 b) eth0 Link encap:Ethernet HWaddr 5C:F3:FC:B7:DF:0C inet addr:192.168.62.150 Bcast:192.168.62.191 Mask:255.255.255.192 inet6 addr: fe80::5ef3:fcff:feb7:df0c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8807 errors:0 dropped:0 overruns:0 frame:0 TX packets:13705 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1209387 (1.1 MiB) TX bytes:16803742 (16.0 MiB) eth1 Link encap:Ethernet HWaddr 5C:F3:FC:B7:DF:0E inet6 addr: fe80::5ef3:fcff:feb7:df0e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2923 errors:0 dropped:0 overruns:0 frame:0 TX packets:34 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:291845 (285.0 KiB) TX bytes:3820 (3.7 KiB) eth1.401 Link encap:Ethernet HWaddr 5C:F3:FC:B7:DF:0E UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:233 errors:0 dropped:0 overruns:0 frame:0 TX packets:20 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:15591 (15.2 KiB) TX bytes:1488 (1.4 KiB) eth1.402 Link encap:Ethernet HWaddr 5C:F3:FC:B7:DF:0E UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:115 errors:0 dropped:0 overruns:0 frame:0 TX packets:10 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:16079 (15.7 KiB) TX bytes:692 (692.0 b) eth2 Link encap:Ethernet HWaddr 00:1B:21:C0:56:70 inet6 addr: fe80::21b:21ff:fec0:5670/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:87 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:26586 (25.9 KiB) Memory:97a80000-97b00000 eth3 Link encap:Ethernet HWaddr 00:1B:21:C0:56:71 inet6 addr: fe80::21b:21ff:fec0:5671/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:266 errors:0 dropped:0 overruns:0 frame:0 TX packets:17 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:17922 (17.5 KiB) TX bytes:2646 (2.5 KiB) Memory:97a00000-97a80000 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:195275 errors:0 dropped:0 overruns:0 frame:0 TX packets:195275 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:196514662 (187.4 MiB) TX bytes:196514662 (187.4 MiB) virbr0 Link encap:Ethernet HWaddr 52:54:00:78:65:D5 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:10 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:460 (460.0 b) TX bytes:0 (0.0 b)

7、ifcfg-eth1的配置

[root@node1 ~]#ifcfg-eth1 DEVICE=eth1 HWADDR=5C:F3:FC:B7:DF:0E TYPE=Ethernet UUID=ccc25098-ac10-46b9-936c-f5db3155ecd9 ONBOOT=yes NM_CONTROLLED=no #BOOTPROTO=dhcp ---》不需要

二、虚拟机的配置

1、验证eth1.401网络

2、验证eth1.402网络

3、配置虚拟机test1的网卡1选择eth1.401网络

三、

1、启动虚拟机test1之前

[root@node1 ~]# brctl show bridge name bridge id STP enabled interfaces br401 8000.5cf3fcb7df0e no eth1.401 br402 8000.5cf3fcb7df0e no eth1.402 virbr0 8000.5254007865d5 yes virbr0-nic [root@node1 ~]#

2、启动虚拟机test1之后

[root@node1 ~]# brctl show bridge name bridge id STP enabled interfaces br401 8000.5cf3fcb7df0e no eth1.401 vnet0 br402 8000.5cf3fcb7df0e no eth1.402 virbr0 8000.5254007865d5 yes virbr0-nic