HP-UX SNAplus2 R7 Administration Guide

Administering SNAplus2

Overview of SNAplus2 Administration

server network conﬁguration, you can specify global settings for the types of events to record on all servers,

and then override these on individual servers if necessary.

• SNAplus2 also maintains a usage log ﬁle, which is used to record information about the current and peak usage

of SNAplus2 resources.

• You can specify the names and directories of the ﬁles used to hold each type of log information; if preferred,

you can send both error and audit log information to the same ﬁle. On a client/server system, you can send

messages from all servers to a central log ﬁle on one server (central logging), or send log messages to separate

ﬁles on each server.

• Log ﬁles are generated as text ﬁles, and can be viewed using a standard ASCII text editor such as vi.

• You can choose full logging (which includes details of the cause of the log, and any action required, in the log

ﬁle for each message), or succinct logging (which includes only a summary of the source of the log and the

message text). When using succinct logging, you can use the snaphelp command-line utility to obtain the

full cause and action text for a particular message number if you need further information.

• For some error conditions, SNAplus2 sends a message to the HP-UX console to warn the operator, in addition

to writing a problem message to the error log ﬁle.

• Many components can produce a trace ﬁle that records the activity of that component. Tracing degrades the

performance of SNAplus2 components, and so is normally disabled.

• Using command-line utilities, you can ﬁlter trace ﬁles to extract speciﬁc information, and then format the trace

information to interpret its contents or to produce a summary of message ﬂows. The formatted output ﬁles can

be viewed using a standard ASCII text editor such as vi.

• SNAplus2 can generate alerts and send them to the NetView program at a host computer. These alerts can be

any of the following:

• Link alerts from connectivity components, to provide information about connection problems

• 3270 user alerts from the emulation program

• Alerts supplied by an application program using the MS API

Refer to HP-UX SNAplus2 Diagnostics Guide for information about SNAplus2 log messages, using SNAplus2 trace

facilities, and interpreting trace ﬁles.

For information about using the MS API, refer to HP-UX SNAplus2 MS Programmer’s Guide.

Simple Network Management Protocol Support

The Simple Network Management Protocol (SNMP) is an industry-standard management protocol. SNAplus2

includes an SNMP subagent to provide support for the APPN Management Information Base (MIB) database.

For a more detailed discussion of SNMP and for a list of the APPN MIB objects that are supported by the SNAplus2

SNMP subagent, see Appendix B, APPN Network Management Using the Simple Network Management Protocol.

3.1.3 Administration Permissions

The SNAplus2 administration tools are intended for use by a restricted group of “SNA administrators” who have

permission to manage SNA resources. To achieve this, the executable ﬁles are owned by the system administrator

stop SNAplus2 resources; any user who is to have SNA administrator permissions must be a member of this group.

In the standard SNAplus2 installation, users who are not members of the group sna cannot run the SNAplus2

administration tools at all. If appropriate, you can allow these users to run the tools in read-only mode, so that they

can view conﬁguration and status information but cannot modify, start, or stop resources. To do this, use chmod

to give read and execute permission for any user to the appropriate executable ﬁle or ﬁles: