|  | 11.5 | The Context of Different Routing Protocols
| 11.5.2 | Hybrid routing protocols
An emerging third type of routing protocol combines aspects of both distance-vector and link-state routing. This third type is called balanced-hybrid routing. Balanced-hybrid routing protocols use distance vectors with more accurate metrics to determine the best paths to destination networks. However, they differ from most distance-vector protocols by using topology changes to trigger routing database updates. The balanced-hybrid routing protocol converges rapidly, like the link-state protocols. However, it differs from distance-vector and link-state protocols by using fewer resources such as bandwidth, memory, and processor overhead. Examples of hybrid protocols are OSI's IS-IS (Intermediate System-to-Intermediate System), and Cisco's EIGRP (Enhanced Interior Gateway Routing Protocol).