Definition - What does Advertising mean?
Advertising, in the context of computer networking, is the router characteristic for broadcasting network updates and changes.
Routers are intelligent networking devices that maintain network information via routing tables, which contain information such as routes, nodes, and network addresses, depending on configured protocols. Routing protocols enable the collection of neighboring router information, which is then advertised for all other nodes via the network.
Techopedia explains Advertising
Advertising refers to broadcast messaging much in the same way that a marketing department advertises products to educate customers and includes detailed product information.
Routers use different protocols to collect and store all network routing table information, including nodes, router names, interface names, IP addresses and network addresses. The collected data is advertised over a network, which allows each node to update routing tables accordingly.