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Exam 300-160 topic 1 question 66 discussion

Actual exam question from Cisco's 300-160
Question #: 66
Topic #: 1
[All 300-160 Questions]

You are configuring a switch as a LISP xTR. You plan to use the LISP xTR when deploying redundant map servers. Which action do you take?

  • A. Register the LISP xTR to the anycast IP address of the map resolver.
  • B. Register the LISP xTR to the IP address of each map server.
  • C. Configure the map-notify group command by using the anycast IP address of the map resolver.
  • D. Configure the map-notify group command by using the IP address of each map server.
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Suggested Answer: B 🗳️
Map-Server and Map-Resolver Considerations
The Map-Server and Map-Resolver are critical components in a LISP deployment. They provide capabilities to store and resolve the EID-to-RLOC mapping information for the LISP routers to enable routing between LISP sites.
The Map-Server is a network infrastructure component that learns EID-to-RLOC mapping entries from ETRs, which are authoritative sources and which publish
(register) their EID-to-RLOC mapping relationships with the Map-Server. A Map-Resolver is a network infrastructure component that accepts LISP-encapsulated
Map-Requests, typically from an ITR, and finds the appropriate EID-to-RLOC mapping by checking with a co-located Map-Server (typically) or by consulting the distributed mapping system.
This section discusses Map-Server and Map-Resolver deployment considerations for an enterprise data center LISP deployment. Note that you should deploy redundant standalone coexistent Map-Servers and Map-Resolvers. When redundant standalone Map-Servers and Map-Resolvers are deployed, all xTRs must register with both Map-Servers so that each has a consistent view of the registered LISP EID namespace. For Map-Resolver functions, use of an anycast address is desirable, because it will improve mapping lookup performance by choosing the Map-Resolver that is topologically closest to the requesting ITR.
by thanhtq00104 at April 3, 2025, 9:04 p.m.

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