Configuring the NIC for VLAN trunk

Http://www.microhowto.info/tutorials/802.1q.html

Configure an Ethernet interface as a VLAN trunk

Host needs to connect 2 VLANs, on 192.168.2.1/24 VLAN 2 and on 192.168.3.1/24 VLAN 3

Modprobelsmodgrep 8021q

3 ways:

1 through configuration files

Auto Eth0. 2 iface eth0. 2 inet Static   192.168. 2.1    255.255. 255.0 auto eth0. 3 iface eth0. 3 inet Static   192.168. 3.1    255.255. 255.0

Ifup eth0. 2 ifup eth0. 3

ifconfigEth0.2eth0.2Link encap:ethernet HWaddrxx:xx:xx:xx:xx:xxinet Addr:192.168.2.1Bcast:12.168.2.255Mask:255.255.255.0Up Broadcast multicast MTU: theMetric:1RX Packets:0Errors0Dropped0Overruns:0Frame0TX Packets:0Errors0Dropped0Overruns:0Carrier0Collisions:0Txqueuelen:0RX Bytes:0(0.0b) TX Bytes:0(0.0b

If you need to specify a connection to that physical network card:

Auto Vlan2iface vlan2 inet static   192.168. 2.1    255.255. 255.0   VLAN-raw-device eth0

Http://www.microhowto.info/tutorials/802.1q.html

2 Vconfig

23

ifconfig eth0. 2 192.168. 2.1 255.255. 255.0 192.168. 2.255  ifconfig eth0. 3 192.168. 3.1 255.255. 255.0 192.168. 3.255 up

Get more information on VLAN interface

# cat/proc/net/vlan/eth0.5

Remove VLAN interface

ifconfig eth0. 5 down# vconfig rem eth0. 5

3 via IP

# IP link Add link eth0 name eth0. 2 ID 2  -D link show eth0. 2  192.168. 2.1/192.168. 2.255 Dev eth0. 2 # IP link set dev eth0. 2 up

Delete:

# IP link Set dev eth0. 2 down# IP link delete eth0. 2

After configuring, to ping eth0 IP, eth0 can receive and reply, but eth0.2 receive but not reply.

http://blog.csdn.net/suiyuan19840208/article/details/8221529

Configuring the NIC for VLAN trunk