RFC 2837 (rfc2837) - Page 4 of 48

Definitions of Managed Objects for the Fabric Element in Fibre Channel Standard

RFC 2837                 FC Fabric Element MIB                  May 2000


2.1. Management View of a Fabric Element

   From the management perspective, it is helpful to view a Fabric
   Element to be consisting of multiple "modules".  Each module is a
   grouping, either physical or logical, of one or more ports that may
   be managed as a sub-entity within the Fabric Element.

   This module mapping is recommended but optional.  A vendor may elect
   to put all ports into a single module, or to divide the ports into
   modules that do not match physical divisions.

   The object fcFeModuleCapacity indicates the maximum number of modules
   that a given Fabric Element may contain.  This value must remain
   constant from one management restart to the next.

   Each module is uniquely identified by a module number in the range of
   1 through fcFeModuleCapacity inclusive.  Modules may come and go
   without causing a management reset (of sysUpTime), and may be
   sparsely numbered within the Fabric Element.  That is, the module
   numbering is not required to be contiguous.  For instance, if a
   module is mapped physically to a field-replaceable card and in a 13-
   card cage Fabric Element, cards 3, 5, 6 and 7 may be installed.  The
   vendor may choose to label them as modules 3, 5, 6 and 7
   respectively.  In this example, the value of fcFeModuleCapacity is
   13.  Note that the object fcFeModuleLastChange acts as the
   discontinuity indicator for all counter objects in this MIB.

   A Fabric Element may also provide a proxy management on behalf of
   another management entity by presenting it as one of its Fabric
   Element modules.

   The object fcFeModuleFxPortCapacity indicates the maximum number of
   ports that a given module may contain.  The value of
   fcFeModuleFxPortCapacity must not change for a given module.
   However, a module may be deleted from the Fabric Element and replaced
   with a module containing a different number of ports.  The value of
   fcFeModuleLastChange will indicate that a change took place.

   Each port within the Fabric Element is uniquely identified by a
   combination of module index and port index, where port index is an
   integer in the range (1..fcFeModuleFxPortCapacity).  As with modules
   within a Fabric Element, ports within a module may be sparsely
   numbered.  That is the port numbering is not required to be
   contiguous.  Likewise, ports may come and go within a module without
   causing a management reset.






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