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clockdiff ? Measures clock difference between us and <destination> with 1msec resolution. Without -o option it uses icmp timestamps, with -o it uses icmp echo with timestamp IP option. |
clockdiff [-o|-o1] <destination> |
* some nodes (f.e. Solaris<2.4) do not support icmp |
timestamps. clockdiff -o still works. |
* some nodes (Cisco) use non-standard timestamps, |
which makes clockdiff useless. |
* some nodes use wrong timestamps (Solaris>2.4), if |
run xntpd. Seems, it uses different clock source, which is synchronized to time-of-day clock periodically. |
* -o1 uses three-node tstamp. What option (-o or -o1) |
works better depends on target host. |