Refer to the exhibit. A network engineer must enable segment routing between the three autonomous systems with these requirements: - OSPF link-state data for area 0 routers must be distributed to the

Question

Exhibit

Options

• AR2(config)# router ospf 100
• BR1(config)# router ospf 100
• CR2(config)# router ospf 100
• DR1(config)# router ospf 100

• A
  75% (15)
• B
  5% (1)
• C
  15% (3)
• D
  5% (1)

Explanation

This question tests Segment Routing (SR) with BGP Link-State (BGP LS) and Egress Peer Engineering (EPE). The requirements specify: (1) OSPF link-state data for area 0 must be distributed to the controller via BGP LS - this means OSPF SR must be configured with BGP LS distribution enabled; (2) EPE must be enabled on the egress node in AS 100 - EPE is configured on the border router (R2) that peers with other autonomous systems, allowing the controller to program paths that cross AS boundaries; (3) peer node SIDs must be advertised to controller R1 via BGP LS. R2 is the egress node in AS 100 because it sits at the AS boundary. EPE configuration belongs under R2's OSPF process (router ospf 100) and BGP configuration. Option A correctly identifies R2 as the node requiring EPE configuration. Options B and D incorrectly place EPE on R1, which is the controller, not the egress node.

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