Comparing Distance Vector, Link State, and Hybrid routing

There are three types of routing protocols: distance vector, link state, and hybrid. Each type uses a different approach and algorithm to calculate the best path for each subnet in the network. This tutorial compares all three types and lists their features, functions, advantages, and disadvantages.

Feature	Distance vector	Link state	Hybrid
Example protocols	RIP, RIPv2	OSPF	EIGRP, BGP
Metrics	Hop count	Cost	Composite of bandwidth and delay
Things it uses to calculate the best route	The number of routers (hops) between a router and the destination subnet	The sum of all interface cost settings for all links in a route	Route’s slowest link and the cumulative delay associated with each interface in the route
Convergence	Convergence is slow.	Convergence is moderate.	Convergence is fast.
Routing update method	It broadcasts routing updates. All routers receive routing updates.	It multicasts routing updates. Only routers running the same routing protocol receive and process the routing updates.	It multicasts routing updates. Only routers running the same routing protocol receive and process the routing updates.
Routing update interval	It broadcasts all routing updates at a fixed interval. If anything changes (such as a link goes down or comes up), other routers will learn about it at the next routing update.	It supports trigger updates. If anything changes, it immediately updates other routers about it.	It also supports trigger updates. It updates other routers about changes immediately.
VLSM supports	It supports only classful routing.	It supports classless (VLSM) routing.	It also supports classless (VLSM) routing.
Algorithm	It uses the Bellman-Ford algorithm to calculate the best path.	It uses the Dijakstra’s algorithm to calculate the shortest path.	It uses the DUAL algorithm to calculate the shortest and fastest path.
Bandwidth	Since it periodically broadcasts all routing updates, it consumes more bandwidth.	It consumes less bandwidth. It shares the routing updates only when required or if something changes.	It also consumes less bandwidth.
Routing update contains	Routing updates contain all entries from the routing table.	Routing updates contain only changes.	Routing updates contain only changes.
Supported network size	It supports only small-sized networks.	It supports all types of networks.	It supports all types of networks.
Maximum hops a link can have	15	Unlimited	Unlimited
Network knowledge	It knows only about the directly connected routers.	It knows about all network routers.	It knows about all network routers.
Use of hardware resources	It consumes the least CPU and RAM.	It consumes the most CPU and RAM among these methods.	It consumes more CPU and RAM than distance vector routing but less than link state routing.
Load balancing	It does not support load balancing.	It supports load balancing.	It supports load balancing.
Dis-contiguous network supports	It does not support discontiguous networks.	It supports contiguous networks.	It also supports contiguous networks.

Conclusion

Ultimately, when selecting a routing protocol, it's essential to weigh factors such as network size, resource availability, convergence speed, and the support for advanced features like VLSM and load balancing. Making the right decision ensures your network operates efficiently and adapts to future demands. Distance vector protocols are easy to implement and lighter on resources. However, they are suitable only for smaller networks due to their slower convergence and limitations in scalability. Link state protocols offer robust performance and faster convergence. They are ideal for larger, more complex environments. However, they consume higher resources. Hybrid protocols stand in the middle of both. They provide efficiency and speed while supporting networks of varying sizes. When selecting a routing protocol for your network, consider its needs and characteristics.

Author Laxmi Goswami Updated on 2025-12-06