A junior network engineer needs to configure uRPF on a Cisco router interface to eliminate spoofed IP packets on a network. Which command should be used to configure uRPF mode when using asymmetric routing?

IT Exam Items RepositoryCategory: CCNPA junior network engineer needs to configure uRPF on a Cisco router interface to eliminate spoofed IP packets on a network. Which command should be used to configure uRPF mode when using asymmetric routing?

A junior network engineer needs to configure uRPF on a Cisco router interface to eliminate spoofed IP packets on a network. Which command should be used to configure uRPF mode when using asymmetric routing?

  • ip verify unicast source reachable-via any
  • ip verify unicast source reachable-via rx
  • ip verify unicast source reachable-via rx allow-self-ping
  • ip verify unicast source reachable-via rx allow-default

Explanation: When uRPF is configured on an interface, the uRPF mode should be chosen according to the type of routing. With asymmetric routing, a different path ends up being used for return traffic. Where asymmetric routing occurs, the uRPF loose mode should be configured. The ip verify unicast reachable-via any command configures uRPF in loose mode.

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