phpman > man > RTMON(8)

RTMON(8)                               System Manager's Manual                              RTMON(8)



NAME
       rtmon - listens to and monitors RTnetlink

SYNOPSIS
       rtmon [ options ] file FILE [ all | LISTofOBJECTS ]

DESCRIPTION
       This manual page documents briefly the rtmon command.

       rtmon listens on netlink socket and monitors routing table changes.

       rtmon  can  be started before the first network configuration command is issued.  For example
       if you insert:

       rtmon file /var/log/rtmon.log

       in a startup script, you will be able to view the full history later.  Certainly, it is  pos‐
       sible  to  start rtmon at any time. It prepends the history with the state snapshot dumped at
       the moment of starting.


OPTIONS
       rtmon supports the following options:

       -Version
              Print version and exit.

       help   Show summary of options.

       file FILE [ all | LISTofOBJECTS ]
              Log output to FILE. LISTofOBJECTS is the list of object types that we want to monitor.
              It  may contain 'link', 'address', 'route' and 'all'. 'link' specifies the network de‐
              vice, 'address' the protocol (IP or IPv6) address on a device, 'route' the routing ta‐
              ble entry and 'all' does what the name says.

       -family [ inet | inet6 | link | help ]
              Specify  protocol  family.  'inet' is IPv4, 'inet6' is IPv6, 'link' means that no net‐
              working protocol is involved and 'help' prints usage information.

       -4     Use IPv4. Shortcut for -family inet.

       -6     Use IPv6. Shortcut for -family inet6.

       -0     Use a special family identifier meaning  that  no  networking  protocol  is  involved.
              Shortcut for -family link.

USAGE EXAMPLES
       # rtmon file /var/log/rtmon.log
              Log to file /var/log/rtmon.log, then run:

       # ip monitor file /var/log/rtmon.log
              to display logged output from file.

SEE ALSO
       ip(8)

AUTHOR
       rtmon was written by Alexey Kuznetsov <kuznet AT ms2.ru>.

       This  manual  page was written by Michael Prokop <mika AT grml.org>, for the Debian project (but
       may be used by others).



                                                                                            RTMON(8)