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If the destination is in the same subnet, the node will simply communicate with the destination at the Data Link layer. For example, if Host A (192.168.70.3) attempts to ping Router A (192.168.70.62), the following will happen:

1 Host A will note that Router A's IP is in the same subnet.

2 Host A will send an Address Resolution Protocol (ARP) request to the broadcast destination address, asking who has 192.168.70.62.

3 Switch A will flood the ARP request and Router A will receive it.

4 Router A will send an ARP reply to Host A's MAC address. The reply will contain Router A's IP address (192.168.70.62) and MAC address.

5 Switch A will forward the ARP reply to Host A.

6 Host A will encapsulate the IP packet inside an Ethernet frame addressed to Router A's MAC address. Host A will set the Type field in the frame to 0x0800, indicating that the frame contains an IP packet.

A ping is an Internet Control Message Protocol (ICMP) echo request. ICMP is an integral part of IP.