Message From ______ to ______ Type: Echo Request
TTL: ______ Request ID: _________
Instructions for Original Sender:
1. Fill in source, destination, TTL, ID.
2. Consult your routing table to choose next hop.
Instructions for Receiver:
1. If message is addressed to you, send back Echo Reply.
2. If message is not addressed to you: Decrement TTL,
3. If TTL is zero, send back Error: TTL Exceeded.
4. Consult your routing table to choose next hop.
5. If destination is unknown, send back Error: Host Unreachable
6. Send message to next hop.