Tubing concentricity is a complex feature because it relies on measurements from a derived axis as opposed to a tangible surface â creating a theoretical 3D cylindrical tolerance zone into which all the derived median points of the tube must fall.
Ethernet over IP (EoIP) Tunneling is a MikroTik RouterOS protocol that creates an Ethernet tunnel between two routers on top of an IP connection.The EoIP tunnel may run over IPIP tunnel, PPTP tunnel or any other connection capable of transporting IP.hen the bridging function of the router is enabled, all Ethernet traffic (all Ethernet protocols) will be bridged just as if there where a physical Ethernet interface and cable between the two routers (with bridging enabled). This protocol makes multiple network schemes possible.
The main difference is that the IP address is used by IP which is a network protocol, and the MAC address is used by Ethernet a link layer ( 2 ) protocol. IP can run over different layer 2 protocols, so it doesn't include the media access functionality. You can run IP over Serial lines, Ethernet, DSl, ISDN, etc. For example, DHCP provides dynamic IP addresses over Ethernet; the DHCP server needs the MAC address so it can assign an IP address to a PC.