maximum-lus
maximum-lus
Use the
Syntax Description |
|
number | Maximum number of LU control blocks allowed. The |
| allowed range is 0 to 32000. However, the practical upper |
| limit for concurrently operating TN3270 sessions depends |
| on the hardware and usage characteristics. The default is |
| 2100. |
Default
Because of the license structure, the default is 2100, which represents the limit of a typical license (2000) plus a 5 percent buffer. If you configure a value greater than the default, a license reminder is displayed.
Command Mode
TN3270 configuration
Usage Guidelines
Although the value may be varied at any time, reducing it below the current number of LU control blocks will not release those blocks until a PU is inactivated by DACTPU or by using the no pu command.
If the number of LUs in use reaches 94 percent of the current setting of
The TN3270 server attempts to allocate one LU control block for each LU activated by the hosts. In the case of dynamic definition of dependent LU (DDDLU) the control block is allocated when the client requests the LU, in anticipation of an ACTLU from the SSCP host.
By limiting the number of LU control blocks allocated, you can make sure enough memory is available to support other CIP functions. The control blocks themselves take about 1 K bytes per LU. During session activity, a further 2 K per LU may be needed for data. On a CIP, 32 MB of memory will support 4000 LUs. To support more than 4000 LUs, we recommend 64 MB of memory.
Example
The following command allows 5000 LU control blocks to be allocated:
Related Command
pu
30TN3270 Server Commands
