IBM System i, Manual

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Configure the LAN console for a logical partition
Console planning considerations
When you plan for Operations Console for one or more of your systems, consider these points.
The following information applies to all systems:
v
Unlike previous versions of i5/OS, this release and subsequent releases will support only the console
type that is currently configured. If no console type is specified, such as when a new logical partition is
being created, the supporting hardware IOP specified during the creation process takes precedence. If
the available hardware contains more than one adapter for a selected console type, then the first
console workstation to connect will be configured to become the console.
v
There is also a special set of console options called Allow console recovery and console can be taken
over by another console . This set of functions allows Operations Console to take control from another
console device. The default value of this console option is disabled.
– When the option is enabled:
The first Operations Console device connected becomes the console. Additional LAN-connected
Operations Console devices will have a special DST signon.
All other 5250-based connections will have the new
Console Information Status
window.
Console recovery without the loss of the job is available.
– When the option is disabled:
All 5250-based connections will be presented the new Console Information Status window.
Console recovery without the loss of the job is not available.
v
Operations Console, both direct attached and network (LAN), and twinaxial workstations, can coexist
as console devices if you remember these rules:
– Only one device can be active at a time.
– A twinaxial workstation on any twinaxial workstation controller adapter with port 0 (addressed
either 0 or 1) or port 1 (addressed either 0 or 1) can become a console device if twinaxial console is
the console type selected. If twinaxial console is selected as the console type then Operations
Console devices may not be started.
v Operations Console allows multiple LAN connections to a single system or logical partition, but only
one 5250 session can have control of a system at a time. An active console is the command interface to
a system through 5250 emulation or IBM Personal Communications that is currently interacting with
the system. More than one Operations Console device might have data on the screen but only one is
truly active.
v
IBM System i5
™
and eServer
™
i5 models start counting logical partitions with the number 1 (even if it
is the only partition) instead of a 0. iSeries 270 and 8xx models start counting logical partitions with
the number 0. For the console to connect properly, your logical partitions must also begin numbering at
1 instead of 0. This is especially true if you rely on the BOOTP process to configure the system with its
network data.
v
The client PC also allows multiple local console connections but allows only one local console directly
attached to the system configuration (or local console directly attached to the system with remote
access allowed) for a single PC.
v There is a maximum of 26 Operations Console emulator sessions available per Operations Console PC
client.
v
Try to avoid putting your Operations Console on the same IOP as the storage devices.
– There might be configurations when this cannot be avoided.
– During very heavy usage of storage devices, the console might appear to stop working temporarily,
but it should resume operation shortly. If the console is placed on the same IOP as the storage
devices, enable the console option Allow console recovery and console can be taken over by
another console .
4
System i: Connecting to System i Operations Console
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