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24 Chapter2
Networking Concepts
Network Environment Design Considerations
The maximum number of concurrent processes may limit the number of
remote logons before the maximum number of dynamic I/O devices
does.
Dynamic Ldevs
This is actually a system parameter that can be configured to 999 in
SYSGEN. The default is 332, but the actual number that can be in use
may be limited by the IDD/ODD limits. VT and NS use one dynamic
ldev per remote session and one per LAN link and one per
Point-to-Point link.
NOTE
The result of having DYNAMIC IO DEVS configured too low for NS
VIRTUAL TERMINAL connections is VTERR 8 or VT INFORM 050.
Likewise the dynamic I/O device limit may be reached before the
concurrent process limit.