Atalla Boxcar Reference Guide (G06.24+)

Atalla Boxcar Reference Guide—526564-005

To determine an appropriate value for the MAX-FLATSEG-SIZE parameter multiply the

number of requestors by 32,000. For example if the BOXCAR-RECV-DEPTH is set to

255 the MAX-FLATSEG-SIZE parameter should be set to 8160000 or higher.

If this parameter is set to a value that is too small Boxcar will abend at startup.

BOXCAR-MAXSOCKET-OPENS

Specifies the maximum number of sockets that Boxcar can open on a NSP. This

parameter is optional, if not specified the default value 14 is used. The minimum value

is 1, the maximum value is 14.

It is possible (although not recommended) to have multiple Boxcar processes

communicating with the same Atalla NSP. In this case, make sure that the total number

of sockets opened by the Boxcar processes do not exceed the maximum number of

available NSP sockets.

BOXCAR-RECV-DEPTH

Specifies the Receive Depth value for $RECEIVE. The Receive Depth value is the

number of READ UPDATEs that a process can perform before being required to

REPLY to the requester. This parameter is optional, if not specified, the default value

4047 is used. The maximum value is 4047. When the number of incoming requests to

Boxcar exceeds the receive depth an error 74 is logged.

BOXCAR-SOCKET-RESET-LEVEL

Specifies the frequency which Boxcar will check for, and attempt to restore, invalid

sockets. The value specified, which is multiplied by 2000, is the number of commands

received by Boxcar before it will attempt to restore any invalid sockets. The parameter

is optional, if not specified, the default value 500 (1,000,000 commands) is used. The

maximum value is 2,147,483,647.

BOXCAR-SOCKET-TIMEOUT

Specifies the time, in hundredths of seconds, for a socket open to complete. This

parameter is optional, if not specified, the default value 1000 (10 seconds) is used.

BOXCAR-TCPIP-PROCESS-NAME

Specifies the TCP/IP process used to communicate with the NSP.This process is the

one used by the specific Ethernet controller to which the NSP is attached. Use this

parameter instead of a TACL define to specify the TCP/IP process associated with the

Ethernet controller. If this parameter is not specified, and if the TACL define

TCPIP^PROCESS^NAME is not specified, Boxcar will abend.