A network engineer must configure a Cisco IOS XR router with BGP dampening. Which configuration meets these parameters?

Question

Options

• Arouter bgp 60
• Brouter bgp 60
• Crouter bgp 60
• Droute-policy dampening_specific
• Erouter bgp 60

• A
  2% (1)
• B
  16% (9)
• C
  71% (41)
• D
  9% (5)
• E
  3% (2)

Explanation

BGP route dampening in Cisco IOS-XR suppresses unstable (flapping) routes to improve network stability. The correct configuration (Option C) uses the 'bgp dampening' command under the appropriate address-family context, which is the IOS-XR standard placement. IOS-XR requires dampening to be configured under the BGP address-family (e.g., 'address-family ipv4 unicast') rather than globally under the router bgp process, which is how IOS-classic handles it. The dampening parameters-half-life, reuse threshold, suppress threshold, and maximum suppress time-can be tuned via route-policy or directly in the command. Options A, B, D, and E represent incorrect syntax, incorrect placement (e.g., configuring at the wrong hierarchy level), or use of a route-policy approach that does not match the specific parameters required by the question. Without the full exhibit content, the key principle is that IOS-XR places 'bgp dampening' under the address-family configuration within the BGP routing process.

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