![]() ![]() However, I’ll manually enable it for the sake of demonstration: # lsmod | grep 8021q In practice, this module is automatically loaded if you configure a VLAN subinterface. Network symbols provided by the LibreOffice VRT Network Equipment extension.įirst, ensure that the 802.1Q kernel module is loaded. ![]() Therefore, you need to configure your host to recognize that VLANs are involved here: The second and third VLAN (200 and 300) are carried across the trunk with an 802.1Q tag. The first is VLAN 100, which is carried untagged across the port because it’s the native VLAN. In the topology below, you can see a host (A KVM hypervisor, for example) connected to a switch’s trunk port with three VLANs involved. Next, take a look at a more complex topology. There isn’t any VLAN configuration on the host, but the switch is likely configured to place the host on a particular VLAN. The above configuration is probably familiar to most who have administered a Linux server. # cat /etc/sysconfig/network-scripts/ifcfg-eth0 # ip addr sh eth0Ģ: eth0: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 Network symbols provided by the LibreOffice VRT Network Equipment extension. ![]()
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