NETPARAMS(5,F)              AIX Technical Reference              NETPARAMS(5,F)



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netparams



PURPOSE

Describes the TCF (Transparent Computing Facility) cluster networking
parameters.

DESCRIPTION

The /etc/netparams file contains information on the TCF cluster networking
parameters.  Lines in the file, starting with "#" are comment lines and are
discarded.  The fields are:

site    Indicates the site number of the TCP cluster site.  Valid ranges for
        this field are 1 through 31.

timeout Indicates the number of "network ticks" between retransmissions if no
        acknowledgement is received.  (At present, a network tick corresponds
        to 2/3 of a second.)  Valid ranges for this field are 1 through 255.

retries Specifies the number of retransmissions a TCF network message will be
        attempted before TCF site is considered to be down.  If the TCF site
        was known to be up just prior to sending this message, then the number
        of retries is multiplied by 3 (for example, if the retries field
        specifies "3" and if the site was not up before, the message is sent 4
        times-one original message plus 3 retransmissions; if the site was up
        before, then the message would be sent 10 times-one original message
        plus 3*3 transmissions).  Valid ranges for this field are 1 through
        255.

window  Specifies the number of "normal" (non-topology change) messages that
        may be sent by one site to another without an intervening
        acknowledgement, before the transmitting site will wait for a receipt
        of an acknowledgement.  The windowing algorithm is "fixed"
        (non-dynamic) in nature.  Valid ranges for this field are 2 through
        255.

special Specifies the number of "special" (topology change) messages that may
        be sent without an intervening acknowledgement.  These two windows act
        independently of one another.  Valid ranges for this field are 2
        through 255.

checksum
        Indicates whether or not checksums should be calculated and inserted
        into TCF messages that are being transmitted to the TCF site in
        question.  The receiving site only checks for checksum correctness if
        the check field(s) are non-zero.  Valid checksum fields are "yes" or
        "no" (case insensitive).  A valid checksum is guaranteed to be
        non-zero.



Processed November 7, 1990      NETPARAMS(5,F)                                1

NETPARAMS(5,F)              AIX Technical Reference              NETPARAMS(5,F)




RELATED INFORMATION

In this book:  "netctrl."

The netparams, inetstat, and probe commands in the AIX Operating System Command
Reference.
















































Processed November 7, 1990      NETPARAMS(5,F)                                2