clockdiff

8 iputils-&snapshot;

clockdiff

measure clock difference between hosts

    clockdiff
    -o
    -o1

## DESCRIPTION

`[2] packets or, optionally, IP TIMESTAMP option [3] option added to ICMP ECHO. [1]`

## OPTIONS

``

- Use IP TIMESTAMP with ICMP ECHO instead of ICMP TIMESTAMP messages. It is useful with some destinations, which do not support ICMP TIMESTAMP (f.e. Solaris <2.4).

``

- Slightly different form of ``

## WARNINGS

- Some nodes (Cisco) use non-standard timestamps, which is allowed by RFC, but makes timestamps mostly useless.

- Some nodes generate messed timestamps (Solaris>2.4), when run ``

- ``

## SEE ALSO

,

,

.

## REFERENCES

[1] ICMP ECHO, RFC0792, page 14.

[2] ICMP TIMESTAMP, RFC0792, page 16.

[3] IP TIMESTAMP option, RFC0791, 3.1, page 16.

## AUTHOR

`Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>. It was based on code borrowed from BSD `YOSHIFUJI Hideaki <yoshfuji@skbuff.net>.``

## SECURITY

``

## AVAILABILITY

`http://www.skbuff.net/iputils/iputils-current.tar.bz2.`

# COPYING

    This documentation is free software; you can redistribute
    it and/or modify it under the terms of the GNU General Public
    License Version 2.

    This program is distributed in the hope that it will be
    useful, but WITHOUT ANY WARRANTY; without even the implied
    warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    See the GNU General Public License for more details.

    For more details see the file COPYING in the source
    distribution of Linux kernel of version 2.4.

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