DEFINING THE PRINTER TO THE HOST: TCP/IP ATTACHMENT

connection is no longer usable, even if the connection partner is abruptly powered off or is no longer accessible through the network.

The frequency of keep-alive transmissions is controlled by the INTERVAL parameter on the KEEPALIVEOPTIONS statement. The frequency applies to all TCP applications that direct TCP to send keep-alive transmissions. The default frequency is after about two hours of inactivity.

For printing on the IPS, it is recommended you specify a shorter interval than the default—such as 10 minutes—for the interval between keep-alive transmissions. Also, unless any target host requires that the keep-alive packet contain data, specify SENDGARBAGE FALSE. For example:

KEEPALIVEOPTIONS INTERVAL 10 SENDGARBAGE FALSE

ENDKEEPALIVEOPTIONS

If you change any of the values in the TCP/IP profile, restart

TCP/IP to pick up the changes.

Table E-8.TCP/IP Profile dataset statements example – MVS

ACBPOOLSIZE

 

 

 

 

1000

 

 

ADDRESSTRANSLATIONPOOLSIZE

 

1500

 

 

CCBPOOLSIZE

 

 

 

 

150

 

 

 

DATABUFFERPOOLSIZE

 

 

 

160

 

32768

 

ENVELOPEPOOLSIZE

 

 

 

750

 

 

 

IPROUTPOOLSIZE

 

 

 

300

 

 

 

LARGEENVELOPEPOOLSIZE

 

 

50

 

 

 

RCBPOOLSIZE

 

 

 

 

50

 

 

 

SCBPOOLSIZE

 

 

 

 

256

 

 

 

SKCBPOOLSIZE

 

 

 

 

256

 

 

 

SMALLDATABUFFERPOOLSIZE

 

 

256

 

 

 

TCBPOOLSIZE

 

 

 

 

512

 

 

 

TINYDATABUFFERPOOLSIZE

 

 

256

 

 

 

UCBPOOLSIZE

 

 

 

 

100

 

 

 

KEEPALIVEOPTIONS

INTERVAL

10

SENDGARBAGE

TRUE

ENDKEEPALIVEOPTIONS

 

 

 

 

 

 

 

GATEWAY

 

 

 

 

 

 

 

 

; * Network

First hop

Linkname Packet size Subnet mask Subnet value

9

=

 

BPCLAN

2000

0.255.255.0 0.99.12.0

DEFAULTNET

9.99.12.254 BPCLAN

2000

0.255.255.0 0

 

 

 

 

 

 

 

 

 

References: For information about the TCP/IP profile and the statements described in this section, refer to the following publications:

TCP/IP for MVS: Customization and Administration Guide

TCP/IP: Performance Tuning Guide

XEROX DOCUPRINT 96/4635/180 IPS INSTALLATION PLANNING GUIDE

E-13

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Xerox 180 IPS manual Table E-8.TCP/IP Profile dataset statements example MVS, Defaultnet