Re: [j-nsp] What exactly causes inconsistent RTT seen using ping utility in Junos?

Hey Martin, > This is well know behavior and documented in several KB articles. > However, what exactly causes this? I think just CPU doing something else before given time to do the ICMP packets. Like busy running some RPD task. You are facing uphill battle if you need to rely on precise ICMP

[j-nsp] What exactly causes inconsistent RTT seen using ping utility in Junos?

Hi, ping utility(or "icmp-ping" RPM probe without hardware-timestamp) in Junos shows occasional high RTT even in case of pinging for example directly connected devices in the LAN. Example: 64 bytes from 10.55.55.1: icmp_seq=40 ttl=64 time=0.441 ms 64 bytes from 10.55.55.1: icmp_seq=41 ttl=64