Keying Function Feature - Fujitsu PRIMERGY BX900 User Manual

7 E-Keying Function Feature
This chapter provides information of E-Keying function including the overall mechanism and the
requirements for Ethernet Connection Blade Modules.
The MMB is the central management entity having the overview of the entire blade chassis
configuration. Therefore the MMB is running the central e-keying application which is controlling the
e-keying enable/disable functions of the Connection Blade Modules, mezzanines and CPU Blades. On
one hand the MMB will talk to the BMC on the Server Blades via IPMI to disable/enable ports on the
CPU Blades and mezzanine cards. On the other hand the MMB informs the Connection Blade Modules
via ISMIC to enable/disable the downlink ports of the Connection Blade Module. Only compatible server
blade and mezzanine connections to Connection Blade Module will be enabled by the MMB e-keying
process during power-on process of the modules. After this initialization procedure the e-keying process
will permanently update the enabled ports according to any server blade/mezzanine or Connection
Blade Module installation changes.
E-Keying is a mechanism:
1. To disable any unused downlink ports in Ethernet Connection Blade Modules.
2. To disable any downlink ports of Ethernet Connection Blade Modules which are connected to an
incompatible mezzanine card or CPU blade port.
3. To disable any mezzanine cards or CPU blade channel which are connected to an incompatible
downlink port of Ethernet Connection Blade Module.
4. To avoid any hardware problems and false error messages due to incompatible signal levels.
Ethernet Connection Blade Module Behaviors:
1. The e-keying feature will be realized in such a way that all the available configuration functions in
the Ethernet Connection Blade Modules remain available and operational.
2. The e-keying enable/disable function is independent of the already available port enable/disable
feature in the Ethernet Connection Blade Modules (shutdown/no shutdown) and mezzanine
Cards (enable/disable).
3. The e-keying enable/disable function will be realized as a "low level physical" feature
independent and "below" the standard Ethernet Connection Blade Module / mezzanine card port
enable/disable feature.
4. All the UI (CLI / Web UI) of Ethernet Connection Blade Module will be extended to display the
e-keying status of the downlink ports.
As ports of Ethernet Connection Blade Module are disabled by the e-keying function, they could not be
allowed to be enabled in Ethernet Connection Blade Module by user, but user could configure any
switching functions for those ports as usual. User could enable or disable those ports if they are enabled
again by the e-keying function.
As a port is disabled by the e-keying function, user still could configure any functions on this port.
However, this port might be disabled by the firmware internally for some functionality such as link state
function. In this case, the port will be in disabled state if this port is enabled again by e-keying function.
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