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Configure Control Plane Policing (CoPP) on R2, meeting all the following requirements:
Configure CoPP protection on R2, allowing ICMP pings sourced from the RFC 1918 address space only. Any ICMP packets sourced from nonprivate address space to R2 should be dropped.
Do not configure any parameters under the default class that matches any packet.
You are allowed to configure only one class-map and one policy-map to complete this task.