pvcarp(1m)                     DG/UX R4.11MU05                    pvcarp(1m)


NAME
       pvcarp - Interphase 5515 ATM Network Interface PVC ARP utility.

SYNOPSIS
       /bin/pvcarp -a

       /bin/pvcarp -d hostname

       /bin/pvcarp -f filename

       /bin/pvcarp -s hostname vcinum [rateinmbits] [llcsnap ( y/n )]

DESCRIPTION
       pvcarp sets and displays Internet address to VCC mapping for PVC
       connections for the Interphase 5515 ATM Network adapter.  Pvcarp is
       used to configure VCI number for each PVC connection manually.
       Pvcarp is a front end to arp(1M) and uses arp entries to setup
       Internet address to VCC mappings. The VCI number and the rate
       information for each connection is stored in the ethernet address
       field of the arp table entry.  The first 3 bytes of the ethernet
       address in the arp table contain zeros and the last 3 bytes contain
       the VCI number and the rate information of the PVC connection.

       There are 4 high priority and 1 low priority rate queues that are
       used for the PVC connections.  The low priority rate queue is
       serviced if there is any bandwidth left after servicing the high
       priority rate queues.  The low priority rate queue is set to the link
       rate during driver initialization and cannot be changed. The high
       priority rate queues are set dynamically based on the rates specified
       in the PVC entries.

       High priority rate queues should be to used send data at a fixed
       rate. To send data in a "best effort" manner, low priority rate queue
       should be used. Low priority rate queue is the default rate queue and
       is used if no rate is specified.

       As there are only 4 high priority rate queues, the number of
       different rates specified in all the active PVCs should not exceed 4.
       If the number of different rates in active PVCs exceeds 4, data will
       not be transmitted at the specified rates. Note that multiple PVCs
       that are set to the same rate use a single rate queue. Also, the
       total rate specified in all the active PVCs that use high priority
       rate queues should not exceed the line rate; otherwise data will not
       be transmitted at the specified rates.

       The resolution of the rate queues is limited. If the rate queue
       cannot be set to the specified rate, it is set to the highest
       configurable rate below the specified rate. In general, the lower the
       rate, the better the resolution of the rate queue. Display the
       Internet-to-VCC mapping table to see the exact rate of the PVCs.

OPTIONS
       -a     Display all Internet address to VCC mappings.

       -d     Delete an Internet-to-VCC mapping.

       -f     Read the file named filename and set multiple Internet address
              to VCC mappings.

       -s     Create an Internet address to VCC mapping. The VCI number
              vcinum is given as a decimal number. The rate rateinmbits
              is optional and is given as a decimal number in Mbits/sec.  If
              no rate is specified, low priority rate queue is used.  The
              minimum value of the rate is 0.2 Mbits/sec. and the maximum
              value is the link rate. If the rate specified in not in this
              range, default rate queue is used.  The llc_snap field is
              optional and  specifies whether LLC/SNAP or null encapsulation
              should be used on the connection. If y is specified, LLC/SNAP
              encapsulation is used. If n is specified, null encapsulation
              is used. By default, LLC/SNAP encapsulation is used.

SEE ALSO
       pa(7), ia(7), iastat(1M), iaparam(1M), arp(1M)


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