local host, remote host, and intermediate routers) does this route have? Answer: 4Ĩ Traceroute Question 2 How many hops does this route have? Answer: 3ĩ Traceroute Question 3 Remote host: Jack Local host: Alice 1 hop 2 hop 3 hop N-1 hop N hop Answer: N+1 For a route with N hops, how many computer does it have?ġ0 Traceroute Question 4 Remote host: Jack Local host: Alice 1 hop 2 hop 3 hop N-1 hop N hop Answer: 3N Local host sends 3 packets to each computer on the route (incl. Remote host: Jack Local host: Alice 1 hop 2 hop 3 hop N-1 hop N hopħ Traceroute Question 1 How many computers (incl. 3 probes 3 probes 3 probes Remote host: Jack Local host: AliceĦ Traceroute Technically, a hop is defined as the action that occurs when a packet “jumps” from one router to the next. Sends 3 packets that will reach each router on path towards destination Each router returns packets to sender sender times interval between transmission and reply.
However, there is no map of the internet, so how do you know what route a packet is taking?ģ An Analogy State College Philly NYC Boston Remote host: JackĤ Traceroute Widely used command-line tool to let hosts peek inside the network On all OSes (tracert on Windows) Provides delay measurement from source to router along end-end Internet path towards destination.ĥ Traceroute Probe successive hops to find network path Presentation on theme: "Review: Switch Model: Reduce the Mess"- Presentation transcript:Ģ Question Why you fly, you can check a map to determine what cities are on the route.
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