Some examples of DV protocols:
2.1. Routing Information Protocol (RIP): One of the oldest routing protocols, it uses hop count as its metric and has a maximum limit of 15 hops. It is a simple protocol but not suitable for large networks or networks with slow links.
2.2. Interior Gateway Routing Protocol (IGRP): Developed by Cisco, it uses a composite metric that takes into account factors such as bandwidth, delay, reliability, and load. It has a maximum hop count of 100 and supports VLSMs.
2.3. Routing Information Protocol version 2 (RIPv2): An improved version of RIP, it supports CIDR, VLSMs, and classless routing. It also includes the ability to send routing updates in multicast rather than broadcast
These protocols are less popular and less used in modern networks, but are still implemented in some networks for specific use cases.
3. Link-State Routing: Link-state routing protocols, such as Open Shortest Path First (OSPF) and Intermediate System to Intermediate System (IS-IS), use metrics such as bandwidth and delay to determine the best path to a destination. These protocols flood information about the state of their links to all routers in the network, and each router builds its own copy of the network topology.