So an ISP could have proper mac address of a gateway or directly attached client (usually this would be a cable modem or router). Anyway some datalink layers used by ISPs: Ethernet, PPP, VPLS.

The Bottom Layers In Ethernet and Wi-Fi networks, the data link layer is split into two sublayers. The Logical Link Control (LLC) is an interface to the Media Access Control (MAC) layer.

The Data Link Layer is one of my favorite layers of the OSI Model. Like a father who loves ALL of his children equally, but in different ways, I also love the other layers, but Layer 2 will always ...

The data link layer is responsible for transmitting packets of information across the link between hosts. If the link is shared by many hosts (for example, a LAN) this layer also specifies how access ...

For more than 20 years we have been using Layer 3 connectivity powered by dynamic routing protocols to route traffic between data centers, but adoption of virtualization and geo-clustering ...

For more than 20 years we have been using Layer 3 connectivity powered by dynamic routing protocols to route traffic between data centers, but adoption of virtualization and geo-clustering ...