Pathping / Day 01

Background

Wanted to talk very little about using pathping to get an idea of the route between one and a destination host.

Syntax

The syntax is generic enough.

Enter pathping and the destination’s hostname or IP Address.

Sample


 pathping Haaretz.com

Output

Tracing Route

pathping.haaretz.01.20190310.0756PM

Computing Statistics

pathping.haaretz.02.20190310.0800PM_x

Interpretation

 

There are two sections to pathping’s output.

The sections are “Tracing Route” and “Computing Statistics“.

 

Tracing Route

Each router that is responsible for forwarding the network packet is listed.

Computing Statistics

Allotted Time

Depending on how many routers are encountered time is allotted for processing.

Each router is pinged one hundred times every 0.25 seconds.

That is, 25 seconds is allotted for each router.

Columns

  1. Hop
    • Increasing number for each router
  2. RTT
    • RTT means Round Trip Time
    • The is how long it took to receive response back from that router
  3. Source to Here / Loss / Sent Percentage ( % )
    • Percentile of packets lost
    • If 100 packets were sent, but only 20 acknowledgement was received
    • This number will be ( 100-20) / 100 or 80%
  4. This Node Link / Loss / Sent Percentage ( % )
    • Packet loss information specific to this router
  5. Address
    • Router’s Address

Summary

  1. If you see 100% packet loss, but entries beyond that point
    • That specific router is likely dropping ICMP traffic

 

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