Associating 3708Lus With Host Lus - IBM 3708 Description

Associating 3708LUs with Host LUs
Each 3708 LU is defined by an SNALU device number. This number can be
defined by the 3708 control terminal operator and is stored in the 3708
configuration. The control terminal operator can define the SNA LU device number
for each of the three LUs associated with downstream 3708 ports.
The 3108 associates the SNA LU device number with two less than the LU address
defined at the host (OAF '). For example, if the host generation defines the address
of an LU as 2, the corresponding LU in the 3708 has an SNA LU device number of
o.
The default SNA LU device numbers in the 3708 configuration are listed in the
following table. The default LU device numbers are provided as if a
display-with-printer were configured for each port.
Port A Host BHost Printer
1 00 00
10
2 01 01 11
3 02 02 12
4
03 03 13
5 04 04 14
6 05 05 15
7 06 06 16
8 07 07 17
9 08 08 18
10 09 09 19
SNA LU device numbers may range from 00 to 31 and may be assigned to any port.
The control terminal operator, however, must ensure that:
• All SNA LU device numbers assigned to a particular host are unique.
• All SNA LU device numbers assigned to MLU printers are unique and different
from those SNA LU device numbers assigned to Host A or Host B.
Note: Device numbers should be unique. The 3708 does not check for duplicates.
Duplicate device numbers can cause unpredictable results.
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IBM 3708 Description