What is the main function of the map server in LISP infrastructure?

The main function of the map server in LISP ( Locator/ID Separation Protocol) infrastructure is to store registered EID (Endpoint Identifier) prefixes in a mapping database. This mapping database is crucial as it maintains the association between the endpoint identifiers and the corresponding routing locators. By doing this, the map server enables the LISP architecture to separate the identity of an endpoint from its location, facilitating better scalability and mobility of devices within a network.

In a LISP-enabled environment, the EID represents the identity of an endpoint or a host, while the routing locator provides the actual location of the device in the network. The map server plays an essential role in dynamically mapping these EIDs to their respective routing locators, allowing efficient data forwarding and mobility.

Without the proper functionality of the map server to maintain these mappings, LISP would not be able to deliver its benefits, such as seamless endpoint mobility and enhanced multihoming options. This central function underscores the importance of the map server in the overall effectiveness of LISP as a network protocol.