Software User's Guide Version 3.4

ESCON Channel Dynamic Reconfiguration Support

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

CONFIG (Talk 6) Delete Interface

ESCON channel supports the CONFIG (Talk 6) delete interface command with the following considerations:

• All virtual interfaces (LSA, LCS, MPC) on this ESCON interface will also be deleted.
• If this is the last channel (ESCON or PCA) interface on the box, then the APPN loopback interface will also be deleted if it exists.

GWCON (Talk 5) Activate Interface

ESCON channel supports the GWCON (Talk 5) activate interface command with the following consideration:

The MAXDATA size will not be set higher than the buffer size allocated for the router at reboot.

All ESCON channel interface-specific commands are supported by the GWCON (Talk 5) activate interface command.

GWCON (Talk 5) Reset Interface

ESCON channel supports the GWCON (Talk 5) reset interface command with the following considerations:

• All virtual interfaces (LSA, LCS, MPC) on this ESCON interface will also be reset.
• All virtual interfaces (LSA, LCS, MPC) must allow the reset of their interface. Reasons that a virtual net would not allow the reset of its base net are: For MPC, if the new configuration has more subchannels than the configuration that is currently active, and MPC is unable to get additional storage to support these new subchannels, the reset will not occur. If additional storage is needed, a message will displayed on the console.
• The MAXDATA size will not be set higher than the buffer size allocated for the router at reboot.

All ESCON channel interface-specific commands are supported by the GWCON (Talk 5) reset interface command.

GWCON (Talk 5) Temporary Change Commands

ESCON 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 iplow Note: Allows the low water mark for the pool of private buffers used for fast-path input to be modified.

GWCON, net, tune opfair Note: Allows the "fair" number of packets that can be queued by this interface to be modified.

GWCON, net, trace Note: Allows the trace mode for the ESCON adapter microcode to be turned on and off.