H12-821: HCIP-Datacom-Core TechnologyDemo

By Huawei · Question Mode

QuestionQ18

Enterprise Application Architectures and Cloud Technologies

Which statement about router IDs in dynamic routing protocols is false?

  • A After a router ID changes, router ID of each protocol will change without requiring additional operations.
  • B If no router ID is manually configured and loopback interface addresses are configured, the largest loopback interface address is used as the router ID.
  • C If a router ID is manually configured using the router-id command, this router ID will be used.
  • D If no router ID and no loopback interface address are configured, the largest physical interface IP address is used as the router ID.
Explanation

A router ID change does not automatically update every routing protocol. The new router ID takes effect only after the relevant routing protocol is manually reset. When no manual router ID is configured, the selection process prefers the largest loopback-interface IP address; if none exists, it selects the largest IP address on another interface.

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