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Can Service-Policies Be Changed in GCP to Allow Ping/ICMP Communications?

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Applies to

  • ONTAP 9
  • Cloud Manager
  • Google Cloud Provider (GCP)

Answer

  • ICMP is not supported for back-end instances
    • Network Load Balancing doesn't deliver ICMP packets to back-end instances.
    • If an ICMP packet is sent, for example with ping or trace-route, the reply doesn't come from the load balancer's back-end instances
    • Google Cloud infrastructure might send an ICMP reply, even if you have firewall rules that prohibit ICMP traffic on the load balancer's back-end instances
    • This behavior can't be changed

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