Technical data

Preparing to Install and Conﬁgure TCP/IP Services

1.2 Preinstallation Tasks

1.2.7.3 Interrupt Stack Pages (VAX Only)

If you are using PATHWORKS Internet Protocol (PWIP) on an OpenVMS

VAX system, you should increase the number of interrupt stack pages

(INTSTKPAGES) to 12 or more to help eliminate system startup warnings

and failures. For information about the PATHWORKS for OpenVMS (Advanced

Server), see the PATHWORKS documentation.

To increase the number of interrupt stack pages, add a statement to the

MODPARAMS.DAT ﬁle that increases the value of the INTSTKPAGES system

parameter, as in the following example:

ADD_INTSTKPAGES = 12

1.2.7.4 System Page Table Entries Parameter (VAX Only)

On VAX systems, make sure the AUTOGEN parameter SPTREQ is set to at least

6000. To check the minimum SPTREQ value, run SYSMAN as follows:

$ RUN SYS$SYSTEM:SYSMAN

SYSMAN> parameter show sptreq

%SYSMAN, a USE ACTIVE has been defaulted on node VMSVAX

Node VMSVAX: Parameters in use: ACTIVE

Parameter Name Current Default Minimum Maximum Unit Dynamic

-------------- ------- ------- ------- ------- ---- -------

SPTREQ 8000 3900 3000 -1 Pages

SYSMAN>

To modify the minimum SPTREQ, run the AUTOGEN command procedure as

described in the OpenVMS System Management Utilities Reference Manual: A-L.

Modify the minimum SPTREQ value as follows:

MIN_SPTREQ = 6000

1.2.8 Assigning a User Identiﬁcation Code

An OpenVMS user or group of users is identiﬁed by a unique, assigned user

identiﬁcation code (UIC) in the format [group,member], where group and member

are numeric, alphanumeric, or alphabetic characters. For example, a UIC can be

either [306,210], [GROUP1, JONES], or simply JONES. The UIC is linked to a

system-deﬁned rights database that determines user and group privileges.

The TCPIP$CONFIG conﬁguration procedure uses a group UIC to create

accounts for components. If a user-speciﬁed UIC is not in place from a previous

conﬁguration, the procedure creates the following UIC group numbers:

Default

UIC Group

Number Description

3655 The default UIC group number for service accounts. If this is an initial

product conﬁguration but the procedure detects that number 3655 is in

use, TCPIP$CONFIG prompts you for a new UIC group number.

3375 The default UIC group number for the TCPIP$NOBODY user account.

3376 The default UIC group number for the ANONYMOUS account.

Before you assign a new group UIC, check that the number you chose is not

already in use by entering the following commands:

Preparing to Install and Conﬁgure TCP/IP Services 1–5