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Malkavian
Asked: 2020-05-06 00:09:33 +0800 CST

about ubuntu and vlan /etc/network/interfaces

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I have an ubuntu server and I want to set a static ip for it.

The ip will be 192.168.1.7, the subnet mask 255.255.255.0 the gateway 192.168.1.1 and the VLAN 50.

What lines should be in /etc/network/interfaces file to get that vlan setting and those ip subnet-mask and gw settings?

Is it correct to connect the server to a port tagged vlan 50 or shoul I connect it to a port that carries all vlans?

should this work?

auto eth1.50
iface eth1.50 inet static
    address 192.168.1.7
    netmask 255.255.255.0
    gateway 192.168.1.1
    vlan-raw-device eth1
ubuntu vlan

1 Answers

  1. I am not sure if your example would work, but can show you my configuration that works fine.

    auto eth1
iface eth1 inet static
        address 0.0.0.0

vlan-raw-device eth1

auto eth1.50
iface eth1.50 inet static
    address 192.168.1.7
    netmask 255.255.255.0
    gateway 192.168.1.1

    As you see, first I bring up the unaddressed eth1, then set vlan-raw-device globally (that will apply to all following VLAN subinterfaces), and finally bring up the actual 802.1q vlan subinterface.

    It does not matter if the port on the switch is a trunk with all vlans or just this one (50). What matters is that frames on that port are tagged. Frames not belonging to vlan 50 would be skipped anyway.

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