vrport(1M)                       VxVM 3.5                        vrport(1M)
                                 1 Jun 2002



 NAME    [Toc]    [Back]
      vrport - VERITAS Volume Replicator port management utility

 SYNOPSIS    [Toc]    [Back]
      vrport [-a | -r] data [port | portlow-porthigh [,port...]]

      vrport heartbeat [port]

      vrport vradmind [port]

      vrport vxrsyncd [port]

 DESCRIPTION    [Toc]    [Back]
      The vrport utility manages the various UDP and TCP ports used by
      VERITAS Volume Replicator(VVR).

      VVR uses the UDP and TCP transport protocols to communicate between
      the Primary and Secondary.

      VVR exchanges three types of message between the Primary and Secondary
      - heartbeat, data and administrative control.

      The heartbeat messages are transmitted using the UDP protocol on the
      IANA approved 4145 UDP Port number. VVR can use either the UDP
      transport protocol or the TCP transport protocol to exchange data
      messages. VVR uses UDP Anonymous ports for data replication between
      Primary and the Secondary if the network protocol is UDP. VVR uses
      IANA approved 4145 TCP port number for TCP listener port on the
      Secondary and TCP Anonymous ports on the Primary for data replication
      if the network protocol is TCP.

      VVR uses IANA approved 8199 TCP port for communication between the
      vradmind daemons on the Primary and the Secondary.  vradmind server
      provides administration of VVR objects in a distributed environment.
      VVR uses 8989 TCP port number for communication between the vxrsyncd
      daemons on the Primary and the Secondary.

      Use vrport(1M) to display, change or set the port numbers used by VVR.
      You may have to change the port numbers to resolve a port number
      conflict with other applications, to configure VVR to work in a
      firewall environment when using UDP network protocol by restricting
      the number of ports to replicate data between the Primary and the
      Secondary.

      The action performed by vrport depends on the specified keyword
      operand(s).

      When invoked with no arguments, vrport  displays  the port number(s)
      used for heartbeat, data, vradmind and vxrsyncd communication between
      the Primary and Secondary on the standard output.




                                    - 1 -       Formatted:  January 24, 2005






 vrport(1M)                       VxVM 3.5                        vrport(1M)
                                 1 Jun 2002



 KEYWORDS    [Toc]    [Back]
      data [port | portlow-porthigh [,port...]]
                Without any arguments, the vrport data command displays the
                port number(s) used by VVR for data replication between the
                Primary and the Secondary.  This is applicable only if you
                have chosen UDP for network protocol.

                With the port number(s) or range specified, restricts VVR to
                use the ports or list of ports specified for data
                replication.

                If the -a flag is specified, the vrport data command appends
                the given port numbers(s) or range to the existing port
                number(s) or range to be used for data replication.

                If the -r flag is specified, the vrport data command removes
                the given port number(s) or range from the existing port
                number(s) for data replication.

                You need to execute /usr/sbin/vxnetd, pause and resume all
                RLinks for VVR to use new port information.

      heartbeat [port]
                Without the port argument, displays the UDP port number used
                to exchange heartbeat messages.

                With the port argument specified, sets the UDP port number
                to exchange heartbeat messages. The new port number is used
                on the next reboot of the system.

      vradmind [port]
                Without the port argument, displays the TCP port number used
                by the vradmind daemons for communication between the
                Primary and the Secondary.

                With the port argument specified, sets the TCP port number
                to be used by the vradmind daemons.The new port is used when
                the vradmind process is restarted.

      vxrsyncd [port]
                Without the port argument, displays the port the TCP port
                number used by vxrsyncd daemons for communication between
                the Primary and the Secondary hosts.

                With the port argument specified, command sets the TCP port
                number to be used by the vxrsyncd daemons.The new port is
                used when the vxrsyncd process is restarted.

 EXAMPLES    [Toc]    [Back]
      See the VERITAS Volume Replicator Confguration Notes for examples.




                                    - 2 -       Formatted:  January 24, 2005






 vrport(1M)                       VxVM 3.5                        vrport(1M)
                                 1 Jun 2002



 EXIT CODES    [Toc]    [Back]
      The vrport utility exits with a non-zero status if the attempted
      operation fails. A non-zero exit code is not a complete indicator of
      the problems encountered but denotes the first condition that
      prevented further execution of the utility.

 SEE ALSO    [Toc]    [Back]
      vradmin(1M),vxrlink(1M)

      VERITAS Volume Replicator Administrator's Guide

      VERITAS Volume Replicator Configuration Notes


                                    - 3 -       Formatted:  January 24, 2005