Route trace_route trace_online tracert query

Tool Introduction

The route tracking function can help the webmaster identify the network traffic situation, and it is also a good auxiliary tool for network managers!

Tracert is a route tracing utility that determines the path taken by IP datagram access targets. The Tracert command uses the IP Time To Live (TTL) field and ICMP Error message to determine the route from one host to other hosts on the network.

How Tracert Works

Tracert sends Internet Control Message Protocol (ICMP) response packets with different TTL values to the target The diagnostics determines the route taken to the target. Each router on the path is required to decrease the TTL on the packet by at least 1 before forwarding the packet. When the TTL on the packet is reduced to 0, the router should send the message "ICMP Timeout" back to the source system.

Tracert first sends the response packet with a TTL of 1, and then increases the TTL by 1 in each subsequent transmission process until the target response or TTL reaches the maximum value, so as to determine the route. Check the ICMP sent back by the intermediate router Timeout "message to determine the route. Some routers directly discard TTL expired packets without asking, which is not seen in the Tracert utility.

Recently used

Popular recommendation

Route tracing