Result of ping show DUP!


#1

hi all, does anyone know what is( DUP! )? when we do ping test to certain destination it show that


#2

That is mostly related to packet duplication received. Please further check whether network is properly setup and no looping happen.

For more information please refer to the URL below:
https://wiki.wireshark.org/DuplicatePackets

Please check on the ping time as well, normally you should not get ping response time more than 50 ms for local network connection.


#3

Dear Sitloongs,

The ping result is actually capture from one of my peplink at location A when ping to location B peplink LAN IP interface.
the location A and B both location having the internet link and then establish SF VPN, where we notice the ping result to internet fine but user complaint high latency among both location, so i did ping test from location A peplink to location B peplink LAN interface saw high latency and then got this (DUP!) , so just feel curious on this.


#4

Can you please open a support ticket here for us to investigate ?


#5

hi sit loong, i did open a case if you manage to found any clue on the DUP! let me know thanks.


#6

Sure, we will followup with you using support ticket


#7

thanks sit loong :slight_smile: