01-03-2023 09:30 AM
When we ping Host A from Host B and we are getting average ping response as 50 ms
means on average, we can reach to Host A at 25 ms from Host B.
Ping gives result as ICMP request + ICMP reply,Right? i.e. Round trip time (RTT)
01-03-2023 09:35 AM
Yes, you right RTT calculate the time go and back.
01-03-2023 09:45 AM
Do Traceroute also tell about RTT at each HOP?
01-03-2023 09:54 AM - edited 01-03-2023 10:49 AM
I make double check
it same as ping the traceroute list the RTT for each probe
Traceroute Command Overview – Xfinity
01-03-2023 09:41 AM
Correct - take a look at below example : (how the averate come in picture) min 4s and maximum 6 - so averate 5ms
01-03-2023 02:36 PM - edited 01-03-2023 02:38 PM
"means on average, we can reach to Host A at 25 ms from Host B."
Incorrect. It means Host A can communicate with Host B with an average RTT of 50 ms. We don't know if, for example, each way might be only 20 ms, but the one direction is currently congested adding another 10 ms to current RTT. Available bandwidth and/or paths are not always symmetrical, i.e. each direction might take a different amount of time.
"Ping gives result as ICMP request + ICMP reply,Right? i.e. Round trip time (RTT)"
Correct.
PS:
BTW, sometimes part of the RTT is "wait" time on the pinged host. Ping was really designed, more-or-less, as quick way to determine if another host is alive, not as a precision timing tool. (Also BTW, Cisco's SLA responder has an option to mitigate destination host "wait" time; to try to provide a more accurate RTT time.)
01-04-2023 01:59 AM
Do traceroute also gives at RTT time with each HOP till destination?
01-04-2023 02:06 AM
I already answer you for this Q,
this the output of each traceroute rows
Hop RTT1 RTT2 RTT3 Name [IP Address]
4 13 ms 8 ms 9 ms MHM [68.86.90.57]
https://www.xfinity.com/support/articles/run-traceroute-command?view=app
01-04-2023 02:22 AM
01-04-2023 02:25 AM
Yes but not with only one RTT but three because traceroute send by default three probe (three exact same traceroute packet with same TTL value).
if one probe missing drop then it RTT will appear as " * "
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide