Synology - Multiple VLANs on the same interface

Enabling mutliple VLANs from the WebUI appears to not be possible. Luckily since it's linux under the hood, we can just edit the config files and add multiple vlans and restart the network service.

First, edit the current config for the network interface, in my case 'eth0':

 root@synology:~# cat << EOF > /etc/sysconfig/network-scripts/ifcfg-eth0  
 DEVICE=eth0  
 BOOTPROTO=none  
 ONBOOT=yes  
 EOF

Now, create the config files for each vlan. I'll create them in a simple for-loop using bash:

 root@synology:~# for vlan in 10 11 12 13; do cat << EOF > /etc/sysconfig/network-scripts/ifcfg-eth0.${vlan}
 DEVICE=eth0.${vlan}
 VLAN_ROW_DEVICE=eth0
 VLAN_ID=${vlan}
 ONBOOT=yes
 BOOTPROTO=static
 IPADDR=172.31.${vlan}.248
 NETMASK=255.255.255.0
 IPV6INIT=off
 EOF
 done

After all the VLAN-Definitions have been created, make sure to restart the network service:

root@synology:~# /etc/rc.network restart

Once the Service is restarted, the vlans should be present:

 root@synology:~# ip -c link show | grep -iE 'eth0'
 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
 6: eth0.10@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
 7: eth0.11@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
 8: eth0.12@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
 9: eth0.13@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000

Feel free to comment and / or suggest a topic.

Comments

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