Cisco ENCOR Practice Exam 2025 – All-in-One Comprehensive Guide to Mastering Enterprise Network Core Technologies!

In the LISP (Location Identifier Separation Protocol) framework, the role of a Map Server (MS) is crucial for mapping between Endpoint Identifiers (EIDs) and Routing Locators (RLOCs). The correct answer indicates that the Map Server aggregates EID prefixes from client Egress Tunnel Routers (ETRs).

This function is essential because the ETRs, which represent destination hosts under the LISP architecture, provide their EID to RLOC mappings to the Map Server. The MS collects these mappings, allowing routers within the LISP infrastructure to efficiently forward packets to the appropriate destination based on their EID. The aggregation of these EID prefixes is important for maintaining a centralized knowledge base of the EID-to-RLOC mappings, which facilitates the routing process and improves the scalability of the network.

The other choices do not accurately capture the primary function of the Map Server in the LISP framework. For instance, broadcasting map requests is not a defining aspect of the MS’s role, as it primarily serves as a repository for mapping information rather than a mediator for requests. The tasks of decapsulating packets and routing non-LISP traffic stem from the responsibilities of other components in the LISP architecture, such as ETRs and In