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man pages section 8: System Administration Commands

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Updated: Thursday, June 13, 2019

pppdump (8)


pppdump - convert PPP record file to readable format


pppdump [ -h | -p [ -d ]] [ -r ] [ -m mru ] [ file ... ]


The pppdump utility converts the files written using the record option of pppd into a human-readable format. If one or more filenames are specified, pppdump will read each in turn, otherwise it will read its standard input. In each case, the result is written to standard output.


The following options are supported:


Prints the bytes sent and received in hexadecimal. If neither this option nor the –p option is specified, the bytes are printed as the characters themselves, with non-printing and non-ASCII characters printed as escape sequences.


Collects the bytes sent and received into PPP packets, interpreting the async HDLC framing and escape characters, and checking the frame check sequence (FCS) of each packet. The packets are printed as hex values and as characters. The non-printable characters are printed as ..


With the –p option, this option causes pppdump to decompress packets which have been compressed with the BSD-Compress or Deflate methods.


Reverses the direction indicators, so that sent is printed for bytes or packets received, and rcvd is printed for bytes or packets sent.

–m mru

Use mru as the maximum receive unit (MRU) for both directions of the link when checking for over-length PPP packets (with the –p option).


See attributes(7) for descriptions of the following attributes:

Interface Stability
Obsolete Uncommitted

See Also



The modified source for this package is available in the legacy/source/network/pppdump package. For more information about the original source, see https://ftp.samba.org/pub/ppp/.

Oracle Solaris Point-to-Point Protocol (PPP) software will be removed in a future Update of Oracle Solaris. The PPP packages are no longer installed by default: they have been renamed to be 'legacy' packages.