Traceroute - jibingl/CCNA-CCNP GitHub Wiki
| Send | Destination Port | Reply (on-path/destination) | OS |
|---|---|---|---|
| UDP packet | Start from 33434 and increase by 1 per UDP | Time Exceeded (TTL timeout) / Port Unreachable | IOS, Linux |
| Echo Request | None | Time Exceeded (TTL timeout) / Echo Reply | Windows |
Example
tracert 1.1.1.1 from Windows host 10.3.3.172
Packets of send message and reply message on the path:
Packets of reply message from the destination 1.1.1.1: