Docker controls the IP address assignment for network and endpoint interfaces via libnetwork’s IPAM driver(s). On network creation, you can specify which IPAM driver libnetwork needs to use for the network’s IP address management. Libnetwork’s default IPAM driver assigns IP addresses based on its own database configuration. For the time being, there is no IPAM driver that would communicate with…
Tag: physical network
Macvlan vs Ipvlan
I’ve covered macvlans in the Bridge vs Macvlan post. If you are new to macvlan concept, go ahead and read it first. Macvlan To recap: Macvlan allows you to configure sub-interfaces (also termed slave devices) of a parent, physical Ethernet interface (also termed upper device), each with its own unique MAC address, and consequently its own IP address. Applications, VMs and…
Bridge vs Macvlan
Bridge A bridge is a Layer 2 device that connects two Layer 2 (i.e. Ethernet) segments together. Frames between the two segments are forwarded based on the Layer 2 addresses (i.e. MAC addresses). Although the two words are still often used in different contexts, a bridge is effectively a switch and all the confusion started 20+ years ago for marketing…