Line card意思

"Line card" is a term used in the telecommunications and networking industries to refer to a document or electronic database that lists the products and services offered by a company, typically including technical specifications, pricing information, and ordering details. It is used by sales representatives, customers, and partners to select and order equipment or services.

In the context of networking, a line card is also a physical component that can be inserted into a network switch or router. It is responsible for processing data packets and managing network traffic for a specific set of ports or interfaces. Each line card typically has a specific function, such as Ethernet switching, optical transport, or firewall services, and can be replaced or upgraded to improve the performance or capabilities of the network device.