Software User's Guide Version 3.4

LSA Virtual Channel Dynamic Reconfiguration Support

This section describes dynamic reconfiguration (DR) as it affects Talk 6 and Talk 5 commands.

CONFIG (Talk 6) Delete Interface

LSA Virtual Channel supports the CONFIG (Talk 6) delete interface command with no restrictions.

GWCON (Talk 5) Activate Interface

LSA Virtual Channel supports the GWCON (Talk 5) activate interface command with the following considerations:

• The base channel (ESCON or PCA) interface for this LSA virtual interface must be active.
• The MAXDATA for this LSA virtual interface cannot be higher than the highest MAXDATA of the virtual interfaces already on the base channel (ESCON or PCA) interface that this LSA virtual interface is on.
• The subchannels for this LSA interface cannot already be in use by another non-LSA virtual interface (MPC or LCS) on the base channel (ESCON or PCA) interface that this LSA virtual interface is on.
• The addition of any new subchannels to the base channel (ESCON or PCA) interface will not put the base channel interface over its maximum number of subchannels.
• There is sufficient storage to add another virtual interface to the base channel (ESCON or PCA) interface. If additional storage is needed, a message will be displayed on the console.

All LSA Virtual Channel interface-specific commands are supported by the GWCON (Talk 5) activate interface command.

GWCON (Talk 5) Reset Interface

LSA Virtual Channel supports the GWCON (Talk 5) reset interface command with the following considerations:

• The LSA virtual interface reset will not be allowed if the changes require adapter modifications. Adapter modifications are required if:
  1. The LAN type or LAN number has been changed.
  2. The BLKLEN or ACKLEN has been changed.
  3. The subchannels have been changed, a new subchannel has been added, or an existing subchannel has been deleted from this LSA interface. In order to change any of the above the entire base channel (ESCON or PCA) interface must be reset.
• The LSA virtual interface must already be activated.
• The MAXDATA for the LSA virtual interface is not greater than the highest MAXDATA of the base channel (ESCON or PCA) interface.

All LSA Virtual Channel interface-specific commands are supported by the GWCON (Talk 5) reset interface command.

GWCON (Talk 5) Temporary Change Commands

LSA Virtual Channel supports the following GWCON commands that temporarily change the operational state of the device. These changes are lost whenever the device is reloaded, restarted, or you execute any dynamically reconfigurable command.

Commands

GWCON, net, tune acklen Note: Changes the operational value of the ACKLEN (acknowledgement length)

GWCON, net, tune blktimer Note: Changes the operational value of the BLKTIMER (block timer)