HP OpenVMS Systems Documentation

Displays PEdriver device data. Each device is a local LAN device on the system, which can be used for NISCA communications.

Format

SHOW LAN_DEVICE landevicename

Parameter

landevicename[,...]

Includes specific LAN devices, which you can use wildcards to specify.

Use the /EXCLUDE qualifier to exclude LAN devices.

Use the SHOW LAN_DEVICE command to display device names.

Qualifiers

/ALL

Includes all device data.

/COUNTERS

Includes device counters data maintained by PEdriver and counters data maintained by the LAN drivers.

/EXCLUDE=(landevicename[,...])

Excludes specific LAN devices, which you can use wildcards to specify.

/INTERVAL

For the /COUNTERS display, displays the changes to counters since the last SHOW command.

/n

Displays the nth page. To select a particular page of a multipage display, specify the number of the page you want to display.

/OUTPUT=filespec

Creates the specified file and directs output to it.

/SDA

Includes LAN device data displayed in SDA format, with all the data collected in one display for one LAN device.

/SUMMARY

Includes device summary data. This is the default if /ALL, /COUNTERS, and /SDA qualifiers are not specified.

Example

SCACP> SHOW LAN_DEVICE/COUNTERS
      

The command in this example displays device counters.

SCACP> SHOW LAN_DEVICE/COUNTERS/INTERVAL
SCACP> SPAWN WAIT 0:0:10
SCACP> SHOW LAN_DEVICE/COUNTERS/INTERVAL
      

The first command in this example displays device counters since the last SHOW command. The SPAWN command tells the DCL WAIT command to insert a 10-second delay. The second SHOW command displays counters after the 10-second period.

SCACP> SHOW LAN_DEVICE/COUNTERS
      

The following is a snapshot of the output for SHOW LAN/ALL command.

Figure 21-6 Sample SHOW LAN/ALL output

For list of all LAN errors, see Table 21-3.

SHOW PORT

Displays information about selected SCA ports.

Format

SHOW PORT portname

Parameter

portname[,...]

Displays information about specific SCA ports, which you can use wildcards to specify. If no portname is specified, all ports on the node are displayed.

Qualifiers

/EXCLUDE=(portname[,...])

Excludes specific port names from the display. You cannot use wildcards to specify port names.

/OUTPUT=filespec

Creates the specified file and directs the output of the command to this file.

Example

SCACP> SHOW PORT
      

The command in this example produces output similar to the following:

Port data for CLUIO2 at 06-DEC 15:01:25.82 Port Mgt Msgs Msgs Dgrams Dgrams Name Prio Sent Rcvd Sent Rcvd ------ ---- ---------- ---------- ---------- ---------- PEA0 0 64582 92237 0 0 PIB0 0 95276 148937 0 0 PIA0 0 0 0 0 0 PIC0 0 62030 115148 0 0

Displays PEdriver tracing data and parameters.

Format

SHOW TRACE nodename

Parameter

nodename[,...]

Includes channels to specific nodes, which you can use wildcards to specify.

Each node name can be accompanied by optional qualifiers to specify local and remote device names. If no local or remote device name is specified, all channels associated with the specified node are included.

Use the SHOW CHANNEL command to display node names and local and remote device names.

Qualifiers

/CONTEXT

Displays only PEdriver trace settings and the event definition. If this qualifier is not included, trace event data is displayed.

/EVENT=(event1[,...])

Enables tracing on specific events, which you can use wildcards to specify. The default is all of the events that are in the trace buffer.

Use the SHOW TRACE/CONTEXT command to display event names.

/EXCLUDE[=(nodename[,...])

Excludes channels to specific nodes, which you can use wildcards to specify. Each node name can be accompanied by optional qualifiers to specify local and remote device names.

If no local or remote device name is specified, all channels associated with the specified node are included.

/GLOBAL (default when no nodes are specified)

/NOGLOBAL (default when nodes are specified)

Specifies whether or not global trace data is to be returned.

/INPUT=filename

Reads trace data from the specified file and displays it.

/LOCAL_DEVICE=(landevicename[,...])

Includes specific LAN devices that identify the local end of the channel. You can use wildcards to specify LAN devices.

Use the SHOW LAN_DEVICE command to display device names.

/OUTPUT=filename

Creates the specified file and directs output to it. If the filename extension is .DMP, the trace data is written to a dump file so that you can use the /INPUT qualifier to display it later.

/REMOTE_DEVICE=(landevicename[,...])

Includes specific LAN devices which identify the remote end of the channel, which you can use wildcards to specify.

Use the SHOW LAN_DEVICE command to display device names.

/SORT

/NOSORT (default)

Returns trace data sorted across channels, VCs, and the global trace buffer by sequence number. The default is trace data returned for channels and VCs one at a time, in order, for the channel or VC, but not across channels and VCs.

Examples

SCACP> SHOW TRACE/CONTEXT
      

The command in this example displays trace settings and definition.

SCACP> SHOW TRACE/OUTPUT=NODE10.TRC
      

The command in this example displays trace data and writes it to the specified file.

An example of the screen output of a SHOW TRACE/CONTEXT command follows.

SYS999 Trace Context 31-JAN-2001 10:59:28.25: Trace buffer size requested 2048 bytes Trace buffer total allocated 92160 bytes Trace buffer allocations 45 successful Trace buffer allocations 0 failed Current trace sequence number 812286047 System cycle counter 404196 cps Stop tracing 0 events after stop event Trace Stop Default Event ----- ---- ------- ----- Active Y Error Active Penalize_ch Active Timer Active Listen_timr Active Handsh_timr Active Size_probe Active Delay_msmt Active Verf_vack Active Y CC_event Active Y CC_state Active Y Path_state Active Y ECS_state Active ACK_process Active Y Chan_update Active Rcvd_CC_msg Active Rcvd_TR_msg Active Send_TR_msg Active Xmt_failed Active Y VC_state Active ACK_timeout Active Y TMO_listen Y No_path Channel Selection: Local Dev Remote Dev Remote Node Name Selection --------- ---------- ---------------- --------- All channels and VCs selected

Displays PEdriver virtual circuit data. Each VC is an SCACP communications path between the local system and a remote system comprised of a set of channels.

Use the SHOW CHANNEL or SHOW VC commands to display node names, which are simply the names of the remote nodes.

Format

SHOW VC nodename

Parameter

nodename[,...]

Includes specific nodes, which you can use wildcards to specify.

Qualifiers

/ALL

Includes all VC data.

/COUNTERS

Includes VC counter data.

/EXCLUDE=(nodename[,...])

Excludes specific nodes, which you can use wildcards to specify.

Use the SHOW CHANNEL or SHOW VC commands to display VC names, which are simply the names of the remote nodes.

/INTERVAL

For the /COUNTERS display, displays the changes to counters since the last SHOW command.

/n

Displays the nth page. To select a particular page of a multipage display, specify the number of the page you want to display.

/OUTPUT=filespec

Creates the specified file and directs output to it.

/SDA

Includes VC data displayed in SDA format.

/SUMMARY

Includes VC summary data. This is the default if /ALL, /COUNTERS, and /SDA qualifiers are not specified.

Examples

SCACP> SHOW VC/COUNTERS NODE10
      

The command in this example displays VC counters for all VCs whose name (that is, remote node name) starts with NODE10.

SCACP> SHOW VC/COUNTERS/INTERVAL
SCACP> SPAWN WAIT 0:0:10
SCACP> SHOW VC/COUNTERS/INTERVAL
      

The first command in this example displays VC counters since the last SHOW command. The SPAWN command tells the DCL WAIT command to insert a 10-second delay. The second SHOW VC command displays counters after the 10-second period.

Creates a subprocess of the current process. The SPAWN command copies the context of the subprocess from the current process.

Format

SPAWN [command-string]

Parameter

command-string

A string of commands to be executed in the context of the created subprocess. After the command string is executed, control returns to SCACP.

Qualifiers

None.

Example

SCACP> SPAWN SHOW TIME
24-AUG-2005 15:22:39
SCACP>
      

The command in this example creates a subprocess of the current process and displays the time.

Directs PEdriver to start using the specified IP interface.

Format

START IP_INTERFACE ipinterface

Parameter

ipinterface[,...]

Includes specific IP interfaces, which you can use wildcards to specify.

• Use the /EXCLUDE qualifier to exclude IP interfaces.
• Use the SHOW IP_INTERFACE command to display IP interfaces.

Qualifiers

/EXCLUDE=(ipinterface[,...])

Excludes specific IP interface, which you can use wildcards to specify. Use the SHOW IP_INTERFACE command to display IP interface names.

Example

SCACP> START IP_INTERFACE WE0
      

This command starts PEdriver on the IP interface WE0.

Directs PEdriver to start using the specified LAN device. The original (and still supported) way to start PEdriver on a LAN device is SYS$EXAMPLES:LAVC$START_BUS.

Format

START LAN_DEVICE landevicename

Parameter

landevicename[,...]

Includes specific LAN devices, which you can use wildcards to specify.

Use the /EXCLUDE qualifier to exclude LAN devices.

Use the SHOW LAN_DEVICE command to display device names.

Qualifiers

/EXCLUDE=(landevicename[,...])

Excludes specific LAN devices, which you can use wildcards to specify.

Use the SHOW LAN_DEVICE command to display device names.

Example

SCACP> START LAN_DEVICE EWA
      

This command starts PEdriver on the LAN device EWA.

Starts or resumes PEdriver tracing, optionally setting tracing options.

Format

START TRACE nodename

Parameter

nodename[,...]

Includes information about communications with specific nodes, which you can use wildcards to specify. Each node name can be accompanied by optional qualifiers to specify local and remote device names.

If no local or remote device name is specified, the VC and all channels associated with the specified node are included.

Use the SHOW CHANNEL command to display node names and local and remote device names.

Qualifiers

/AFTER=n

After the trace stop condition has been satisfied, continues tracing for n events, and then stops. If you do not specify /AFTER, tracing does not continue after the trace stop event. n can be any value between 0 and FFFFFFF.

/DEFAULT

Sets the trace context back to the default settings, which are:

channelname=* /AFTER=0 /EVENT=default settings /STOP /SIZE=512

/EVENT=(event1[,...])

Enables tracing on specific events, which you can use wildcards to specify. The default is a subset of the events, which includes most errors and state changes.

Use the SHOW TRACE/CONTEXT command to display event names.

/EXCLUDE=(landevicename/IPinterface[,...])

Excludes specific LAN devices/IP interfaces, which you can use wildcards to specify.

Use the SHOW LAN_DEVICE/SHOW IP_INTERFACE command to display device names.

/LOCAL_DEVICE=(landevicename/IPinterface[,...])

Includes specific LAN devices that identify the local end of the channel. You can use wildcards to specify LAN devices/IP interfaces.

Use the SHOW LAN_DEVICE/SHOW IP_INTERFACE command to display device names.

/REMOTE_DEVICE=(landevicename/IPinterface[,...])

Includes specific LAN devices that identify the remote end of the channel. You can use wildcards to specify LAN devices/IP interfaces.

Use the SHOW LAN_DEVICE/SHOW IP_INTERFACE command to display device names.

/STOP=(event[,...])

Stops tracing on specific events, which you can use wildcards to specify. The default is to stop no events.

Use the SHOW TRACE/CONTEXT command to display event names.

/SIZE=n

Specifies a trace buffer size of n bytes to be used by PEdriver for each trace buffer: one for global PEdriver use, one for each selected channel, and one for each selected VC. n can be any value between 0 and FFFFFFF.

Examples

SCACP> START TRACE/EVENT=CC_STATE/SIZE=2000
      

The command in this example changes the Trace Channel Control layer state with a 2000-byte trace buffer.

SCACP> START TRACE/EVENT=ALL NODE10,NODE20
      

The command in this example traces all events but only for the NODE10 and NODE20 channels.

Directs PEdriver to stop using the specified IP interface.

Caution If you use STOP IP_INTERFACE to stop the only connection you have to a cluster, it results in a system CLUEXIT. If you use STOP IP_INTERFACE to stop the only the connection, connected to a cluster, the system will CLUEXIT even when you have another connection that uses a different cluster port. However, if you stop all the IP_INTERFACE results in excessive activity. When PEdriver loses access to all of its IP interfaces, it makes an effort to restore cluster IP interfaces communications by completely re-initializing itself. After the displayed retry count is exceeded, PEdriver permanently goes offline. To disable cluster use of all but one IP interface, enter the following command: SCACP> STOP IP_INTERFACE * /EXCLUDE=ipinterface All IP interfaces are stopped except the excluded interface and PEdriver does not need to be reset.

Format

STOP IP_INTERFACE ipinterface[,...]

Parameter

ipinterface[,...]

Includes specific IP interface, which you can use wildcards to specify.

• Use the /EXCLUDE qualifier to exclude IP interfaces.
• Use the SHOW IP_INTERFACE command to display IP interface names.

Qualifiers

/EXCLUDE=(ipinterface[,...])

Excludes specific IP interface, which you can use wildcards to specify.

Example

SCACP> STOP IP_INTERFACE WE0
      

This command stops PEdriver on the IP interface WE0.

Directs PEdriver to stop using the specified LAN device. The original (and still supported) way to stop PEdriver on a LAN device is SYS$EXAMPLES:LAVC$STOP_BUS.

Caution If you use either STOP LAN_DEVICE or SYS$EXAMPLES:LAVC$STOP_BUS to stop the only connection you have to a cluster, you cause the system to CLUEXIT. Even when you have have another connection using a different cluster port, stopping all LAN devices results in excessive activity. When PEdriver loses access to all of its LAN devices, it makes an effort to restore cluster communications by completely re-initializing itself. After the last LAN device is stopped, the reinitilization produces an error message similar to the following: SCACP> STOP LAN * ;%PEA0, Port is Reinitializing ( 49 Retries Left). Check the Error Log. After the displayed retry count is exceeded, PEdriver permanently goes offline. To disable cluster use of all but 1 LAN device, enter the following command: SCACP> STOP LAN * /EXCLUDE=landevicename All LAN devices except the excluded device are stopped, and PEdriver does not need to be reset.

Format

STOP LAN_DEVICE landevicename

Parameter

landevicename[,...]

Includes specific LAN devices, which you can use wildcards to specify.

Use the /EXCLUDE qualifier to exclude LAN devices.

Use the SHOW LAN_DEVICE command to display device names.

Qualifier

/EXCLUDE=(landevicename[,...])

Excludes specific LAN devices, which you can use wildcards to specify.

Example

SCACP> STOP LAN_DEVICE EWA
      

This command stops PEdriver on the LAN device EWA.

Stops PEDRIVER tracing. You can read the trace data recorded so far with a SHOW TRACE command.

To revert trace behavior to initial settings, enter the command SET TRACE/DEFAULT.

Format

STOP TRACE

Parameters

None.

Qualifiers

None.

Example

SCACP> STOP TRACE
      

The command in this example stops PEDRIVER tracing.