About the Exam

This 90-minute Cisco exam covers implementing service provider advanced routing technologies, including routing protocols, policy language, MPLS, and segment routing. Cisco positions it for professionals working in service provider networking, including network administrators, system engineers, project managers, and network designers. Passing earns the Cisco Certified Specialist - Service Provider Advanced Routing Implementation certification and demonstrates practical knowledge for service provider core networks.

Exam Topics

  • Unicast Routing35%
  • Multicast Routing15%
  • Routing Policy and Manipulation25%
  • MPLS and Segment Routing25%

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Last updated July 12, 2026 at 2:38 AM

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QuestionQ1

MPLS and Segment Routing

Question Image

Refer to the exhibit. Router 1 is located in a different data center from Router 2 and Router 3. Router 1 runs the IS-IS routing protocol and is preconfigured with LDP and segment routing. Which configuration must an engineer apply under router isis 111 on Router 1 to implement TI-LFA on the link to Router 2 without disrupting traffic to Router 3?

Explanation

IS-IS TI-LFA on Cisco IOS XR is enabled per interface under address-family ipv4 unicast with fast-reroute per-prefix and fast-reroute per-prefix ti-lfa. Configuring those commands on GigabitEthernet0/0/1 selectively protects the Router 2-facing link, while the Router 3-facing GigabitEthernet0/0/2 remains unaffected.

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QuestionQ2

Multicast Routing

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Refer to the exhibit. The network is configured for multicast with PIM-SM. A server attached to R3 sends multicast data to hosts on R4. To accommodate anticipated network growth, the network engineer with employee ID 123456789 has decided to use Auto-RP to dynamically assign a rendezvous point (RP). Which action must be performed?

Explanation

Traditional Cisco Auto-RP relies on dense-mode flooding of its RP-Announcement and RP-Discovery control groups so routers can learn dynamic group-to-RP mappings. Consequently, PIM-enabled interfaces must be configured for sparse-dense mode (unless an alternative Auto-RP listener design is explicitly configured). A Bootstrap Router (BSR) is a different RP-discovery mechanism.

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QuestionQ3

Routing Policy and Manipulation

Drag and drop the BGP route-selection attributes from the left into the correct sequence on the right. Not all options are used.

Drag & Drop
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Explanation

BGP selects the path with the highest Weight, then the highest local preference. Among the listed later tie-breakers, it prefers the lowest MED, then an eBGP path over an iBGP path, then the oldest path when both paths are external, and finally the lowest router ID.

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QuestionQ4

Routing Policy and Manipulation

Refer to the exhibit.

Question Image

An engineer working on a client’s network is trying to resolve the BGP community issue on the R1 and R2 routers. After displaying the BGP entries, the engineer notices that the two routers still produce different outputs. Which action must the engineer perform on either router to correct the problem and obtain the same output?

Explanation

BGP standard communities are 32-bit values. Cisco IOS displays them as a decimal number by default, whereas ip bgp-community new-format displays them in AA:NN format. R1’s decimal communities correspond to R2’s AA:NN communities, so enabling the new display format on R1 makes the outputs match. This affects display format, not community advertisement or exchange.

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QuestionQ5

Multicast Routing

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Refer to the exhibit. The service provider has deployed segment routing in its core. P2 connects to P3 and P4 through a point-to-multipoint link, as shown. The service provider supplies connectivity for a large enterprise with three primary offices in different geographic regions. Each office connects through one of the three PEs. The enterprise wants to implement multicast traffic across the service provider to stream mission-critical applications among sites. The applications are sourced from a server connected to the network through PE2. Which action must the network-engineering team take so that multicast traffic flows between the enterprise sites over the point-to-multipoint link?

Explanation

SR Tree-SID builds an SR point-to-multipoint multicast replication tree. A replication segment forwards and replicates traffic toward the required downstream nodes, enabling efficient multicast delivery across the SR core without using traditional multicast control protocols such as RSVP, mLDP, or PIM.

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