Technical data

Configuring and Operating the System
AXP 1410 Installation and Use (6806800H70D)
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5.7.2 System Start-Up Behavior and Dependencies
Once the system is powered on, the shelf manager and the hub blade need to connect and
communicate which blades are active. The following section describes the start-up of a shelf
manager, a hub blade and a system manager. A system manager is not part of a AXP 1410
system and has to be developed by the user.
5.7.2.1 Shelf Manager
The shelf manager which becomes active at system start up is dependent on the status of the
partner switch blade. It detects whether a hub blade is present and whether the hub blade’s
ejector handles are closed. Then it negotiates its own active/standby role with its partner
ShMC.
The following table shows which shelf manager becomes active or standby depending on
which hub blades are present in the shelf.
p: Hub blade present
h: Hub blade ejector handles are open
-: Hub blade not present
a: Shelf manager active
s: Shelf manager standby
Table 5-6 Start up Dependencies of the Shelf Manager and the Hub Blade
Left Hub Blade Right Hub Blade Left Shelf Manager Right Shelf Manager
--as
-psa
p- as
ppas
-hsa
h- as
hhas
phas
hps a