September 2002
Intermediate to advanced
332 pages
11h 1m
English
Content preview from IBM eServer zSeries 900 Technical Guide
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Chapter 3. Connectivity 161
The HiperSockets LIC supports:
Up to four independent HiperSockets
Up to 3072 I/O devices across all four HiperSockets
z/OS allows the operation of multiple TCP/IP stacks within a single image. The read
control and write control I/O devices are required only once per image, and are controlled
by VTAM. Each TCP/IP stack within the same z/OS image requires one I/O device for data
exchange.
Running one TCP/IP stack per LPAR, z/OS requires three I/O devices (as do z/VM and
Linux). Each additional TCP/IP stack in a z/OS LPAR requires only one additional I/O
device for data exchange. The I/O device addresses can be shared between z/OS
systems running in different LPARs. Therefore, the number of I/O devices will not be ...
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