Refer to the exhibit. A service provider has LDP and segment routing running in the network. Mobility traffic is carried through LDP and enterprise traffic is carried through segment routing. Which co

Question

Exhibit

Options

• AConfigure segment-routing Sr-prefer prefix-list on AGI and AG2 router for 10.10.10.10/24.
• BEnable segment-routing Mpls Sr-prefer on CRI and CR2 routers for 10.0.0.0/8.
• CEnable segment-routing Mpls Sr-prefer on AGI and AG2 routers for 10.0.0.0/8.
• DConfigure segment-routing sr-prefer prefix-list on CRI and CR2 routers for 10.20.20.10/24.

• A
  5% (1)
• B
  10% (2)
• C
  5% (1)
• D
  80% (16)

Explanation

When LDP and Segment Routing (SR) coexist in the same MPLS network, routers by default may use LDP labels for forwarding. To ensure enterprise traffic (bank branch to HUB site) uses SR labels instead of LDP labels, the 'segment-routing mpls sr-prefer' feature is configured with a prefix-list that specifies the target prefixes. The HUB site is represented by the prefix 10.20.20.10/24, and the SR-prefer policy must be applied on the core routers (CR1 and CR2) that sit on the forwarding path between the bank branch and the HUB site. This instructs those routers to prefer SR-programmed label entries over LDP entries for the specified prefix, ensuring enterprise traffic follows the segment routing path rather than the LDP-signaled path used for mobility traffic.

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