After the keepalive function is enabled for a GRE tunnel, the local end of the GRE tunnel sends a keepalive packet to the remote end every 10s.
After the keepalive function is enabled for a GRE tunnel, the local end of the GRE tunnel sends a keepalive packet to the remote end every 10s.
After the keepalive function is enabled for a GRE tunnel, the local end of the GRE tunnel does not send a keepalive packet every 10 seconds. The default interval for sending keepalive packets is typically 5 seconds. Therefore, it is false to say that the packet is sent every 10 seconds.
This answer is correct - The default value is 5 seconds, and NOT 10 seconds - https://support.huawei.com/enterprise/en/doc/EDOC1000097293/82820d6/gre-configuration-commands#keepalive.