Message From ______ to ______ Type: Echo Reply
TTL: ______ Original ID: _________
Instructions for Original Sender:
1. Fill in source, destination, TTL, Original ID (copied from request).
2. Consult your routing table to choose next hop.
Instructions for Receiver:
1. If message is addressed to you: You received a reply! Congratulations!
2. If message is not addressed to you: Decrement TTL,
3. If TTL is zero, discard packet. Do not send error message.
4. Consult your routing table to choose next hop.
5. If destination is unknown, discard packet. Do not send error message.
6. Send message to next hop.