[Linux] 리눅스 VLAN config 설정

1. 802.1q VLAN tagging by loading 8021q Linux kernel driver

# lsmod | grep 8021q

만약 해당 모듈이 로드되지 않았다면 

#modprobe 8021q

2. CentOS/RHLE/Fedora Linux VLAN 설정 방법

# cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0.5

기존 eth0 파일을 복사 

• eth0 - Your regular network interface
• eth0.5 - Your virtual interface that use untagged frames

3. VLAN tag 네트워크 인터페이스 생성(ex VLAN ID 5)

#  vi /etc/sysconfig/network-scripts/ifcfg-eth0.5

DEVICE=eth0.5

BOOTPROTO=none

ONBOOT=yes

IPADDR=192.168.1.5

NETMASK=255.255.255.0

USERCTL=no

NETWORK=192.168.1.0

VLAN=yes

#  vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

TYPE=Ethernet

BOOTPROTO=none

ONBOOT=yes

3. Network Service 재시작

# service network restart

4. VLAN Interface 확인

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