Debian VLAN notes
Install
# apt-get install vlan
Load the kernel module 8021q
# modprobe 8021q
Load 8021q in every boot
# echo 8021q >> /etc/modules
Add VLAN 40 to eth0 and configure eth0.40
# vconfig add eth0 40 Added VLAN with VID == 40 to IF -:eth0:- # ifconfig eth0.40 192.0.2.8/25
Show eth0.40 configuration
# ifconfig eth0.4
eth0.40 Link encap:Ethernet HWaddr 08:00:28:a8:b8:a7
inet addr:192.0.2.8 Bcast:192.0.2.127 Mask:255.255.255.128
inet6 addr: fe80::a00:27ff:fea8:b8a7/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:8642 (8.4 KiB)
proc
# cat /proc/net/vlan/config VLAN Dev name | VLAN ID Name-Type: VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD eth0.40 | 40 | eth0
#cat /proc/net/vlan/eth0.40
eth0.40 VID: 40 REORDER_HDR: 1 dev->priv_flags: 1
total frames received 7570
total bytes received 1553436
Broadcast/Multicast Rcvd 0
total frames transmitted 7732
total bytes transmitted 7692798
Device: eth0
INGRESS priority mappings: 0:0 1:0 2:0 3:0 4:0 5:0 6:0 7:0
Remove VLAN
# vconfig rem eth0.40 Removed VLAN -:eth0.40:-
Permanent Setups
Set VLAN at boot
Stub in /etc/network/interfaces
auto eth0.40 iface eth0.40 inet static address 192.0.2.8 netmask 255.255.255.128 vlan-raw-device eth0
Add VLAN to Bridged Interface
auto br0.3
iface br0.3 inet static
address 192.0.2.8
netmask 255.255.255.128
network 192.0.2.0
broadcast 192.0.2.127
pre-up vconfig add br0 3
post-down vconfig rem br0.3
linux vlan
