Dynamic routing protocols
Static routes work well in small, stable networks. They are easy to configure and require fewer system resources. However, in networks where topology changes occur frequently, a typical practice is to configure a dynamic routing protocol. Compared with static routing, a dynamic routing protocol is complicated to configure, requires more router resources, and consumes more network resources.
Dynamic routing protocols dynamically collect and report reachability information to adapt to topology changes. They are suitable for large networks.
Dynamic routing protocols can be classified by different criteria, as shown in Table 2.
Table 2: Categories of dynamic routing protocols
Criterion | Categories |
|---|---|
Operation scope | IGPs that work within an AS. Examples include RIP. |
Routing algorithm | Distance-vector protocols. Examples include RIP. |
Destination address type | Unicast routing protocols. Examples include RIP. |
IP version |
|
An AS refers to a group of routers that use the same routing policy and work under the same administration.