Glossary

D

Data Link Layer
Layer 2 of the OSI reference model. This layer passes data between the network layer and the physical layer. The data link layer is responsible for transmitting and receiving frames. It usually includes both the media access control (MAC) protocol and logical link control (LLC) layers.

Dual Homing II
Dual Homing II is the most important feature of Korenix 2nd generation Ring redundancy technology. When you want to connect multiple RSR or form redundant topology with other vendors, Dual Homing II allows you to enable RSTP (Rapid Spanning Tree Protocol) and RSR from one device at the same time. Thus you have more flexibility and standard RSTP way to construct your network topology.