Chassis MIB Proposal

[{3COM/PDD/PeteW}@pdd.3mail.3com.com]

FROM: Wilson, Peter

TO:  {[e-mail]}:ugate:3com                       DATE:  01-04-94
                                                              TIME:  09:39
CC:
SUBJECT:  Chassis MIB Proposal
PRIORITY:
ATTACHMENTS:

------------------------------------------------------------------------------         zero.

         Note that some implementations of this MIB may make this
         object writable. The effect of doing this is to allow
         standard management operations to dynamically reconfigure
         the resource of the chassis. Note that even if a
         specific implementation allows this object to be written,
         such operations may still fail if an illegal assignment
         is attempted. Illegal assignment includes assignment to a
         non-existent row, assignment to an inappropriate entity, eg
         an 802.3 repeater port to a token ring!

         Successfully changing the value of this object may have the
         side effect of changing the value of chasPhyResEntitySubIndex.
         The change will also be reflected in the chasLogResourceTable."
    ::= { chasPhyResourceEntry 6 }

chasPhyResEntitySubIndex  OBJECT-TYPE
    SYNTAX  INTEGER
    ACCESS  read-only
    STATUS  mandatory
    DESCRIPTION
        "A value that allows correlation with the cahsLogResourceTable.
         For each resource in this table which is assigned to an entity,
         there will be a corresponding row in the chasLogResourceTable.
         The row in the logical table is identified by indexing that table
         on the values of chasPhyResAssignment and chasPhyResEntitySubIndex.

         If a resource is not currently assigned to an entity, the value of
         this object for that resource will be zero and there will be no
         corresponding entry in chasLogResourceTable."
    ::= { chasPhyResourceEntry 7 }

-- Logical configuration/resource table

chasLogResourceTable  OBJECT-TYPE
        SYNTAX SEQUENCE OF ChasLogResourceEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "This table contains a row for each resource in the system that
             is currently assigned to a particular entity. This table allows
             a direct mapping from entity to resource via the indices.

             The resource itself is identified by its location within the
             chassis.

             Note that no changes can be made to this table directly. The
             table will change when the physical configuration of the
             chassis changes or when the resource assignment is changed
             by access to chasPhyResourceTable."
        ::= { chasResource 2 }

chasLogResourceEntry OBJECT-TYPE
        SYNTAX ChasLogResourceEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Defines a single logical relationship."
        INDEX { chasLogResourceEntity,
                chasLogResourceEntitySubIndex }
        ::= { chasLogResourceTable 1 }

ChasLogResourceEntry  SEQUENCE {
        chasLogResEntity
                INTEGER,
        chasLogResEntitySubIndex
                INTEGER,
        chasLogResLocationType
                INTEGER,
        chasLogResLocation
                INTEGER,
        chasLogResID
                INTEGER
        }

chasLogResEntity  OBJECT-TYPE
        SYNTAX INTEGER
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The entity ID for which this logical configuration
             relationship exists."
        ::= { chasLogResourceEntry 1 }

chasLogResEntitySubIndex  OBJECT-TYPE
        SYNTAX INTEGER
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This object is used simply to provide for multiple
             resources assigned to a single entity."
        ::= { chasLogResourceEntry 2 }

chasLogResLocationType  OBJECT-TYPE
        SYNTAX INTEGER
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This object, in conjuntion with the value of
             chaLogResLocation identifies the module on
             which the resource refered to by this table row
             resides."
        ::= { chasLogResourceEntry 3 }

chasLogResLocation  OBJECT-TYPE
        SYNTAX INTEGER
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This object, in conjuntion with the value of
             chaLogResLocationType identifies the module on
             which the resource refered to by this table row
             resides."
        ::= { chasLogResourceEntry 4 }

chasLogResID  OBJECT-TYPE
        SYNTAX INTEGER
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "A module potentially contains many resources. The value of this
             object identifies the specific resource instance on this
             module to which this table row defines an entity mapping."
        ::= { chasLogResourceEntry 5 }
 
-- The chasInterconnect group.
-- This group is OPTIONAL and is provided for those chassis that are
-- prepared to or are capable of reporting internal resource interconnection
-- information. The basic idea of this table is that it contains
-- 'link descriptions'. Each such description documents a known connection
-- between two resources in the chassis. There is no requirement to
-- itemise all traffic links between resources in the chassis. For example
-- if this were required then a link from every repeater port to every other
-- repeater port in a repeater would be required.
--
-- Useful interconnections that could be documented in this table are
-- mappings from bridge and router ports to repeater ports. eg a
-- bridge/router card contains a seperate bridge and router, but both share
-- the same logical repeater ports to the backplane. eg:

--           +-----------+   +----------------+   +-----------+
--       +<--]Bdge Port 1]<--] Bridge Relay   ]-->]Bdge Port 2]-->+
--       ]   +-----------+   +----------------+   +-----------+   ]
--       ]                                                        ]
--       V   +-----------+   +----------------+   +-----------+   V
--       +<--]Rter Port 1]<--]  Relay Relay   ]-->]Rter Port 2]-->+
--       ]   +-----------+   +----------------+   +-----------+   ]
--       ]                                                        ]
-- +-------------+                                         +-------------+
-- ]Repeater Pt 1]                                         ]Repeater Pt 2]
-- +-------------+                                         +-------------+

-- Now in this case it is useful to know which bridge ports map to which
-- repeater ports, given that both are in different entities.

chasLinkTable  OBJECT-TYPE
    SYNTAX SEQUENCE OF ChasLinkEntry
    ACCESS not-accessible
    STATUS mandatory
    DESCRIPTION
        "This table contains entity/resource interconnection information. Note
         that this information in this table is read-only."
    ::= { chasInterconnect 1 }

chasLinkEntry OBJECT-TYPE
    SYNTAX ChasLinkEntry
    ACCESS not-accessible
    STATUS mandatory
    DESCRIPTION
        "Each entry in this table describes a link between two resources."
    INDEX { chasLinkIndex }
        ::= { chasLinkTable 1 }

ChasLogResourceEntry  SEQUENCE {
        chasLinkIndex                INTEGER,

        chasLinkFromLocType          INTEGER,
        chasLinkFromLoc              INTEGER,
        chasLinkFromResourceId       INTEGER,
        chasLinkFromIf               INTEGER,

        chasLinkToLocType            INTEGER,
        chasLinkToLoc                INTEGER,
        chasLinkToResourceId         INTEGER,
        chasLinkToIf                 INTEGER
}

chasLinkIndex  OBJECT-TYPE
    SYNTAX INTEGER
    ACCESS read-only
    STATUS mandatory
    DESCRIPTION
        "This object is used to identify one of the link
         specifications in this table."
    ::= { chasLinkEntry 1 }

chasLinkFromLocType  OBJECT-TYPE
    SYNTAX INTEGER
    ACCESS read-only
    STATUS mandatory
    DESCRIPTION
        "A link is defined to be between one resource and another. This
         object identifies is a partial definition of one end of the link.
         This object in conjuntion with chasLinkFromLoc and
         chasLinkFromResourceId identfiy the start of the link."
    ::= { chasLinkEntry 2 }

chasLinkFromLoc  OBJECT-TYPE
    SYNTAX INTEGER
    ACCESS read-only
    STATUS mandatory
    DESCRIPTION
        "A link is defined to be between one resource and another. This
         object identifies is a partial definition of one end of the link.
         This object in conjuntion with chasLinkFromLocType and
         chasLinkFromResourceId identfiy the start of the link."
    ::= { chasLinkEntry 3 }

chasLinkFromResourceId  OBJECT-TYPE
    SYNTAX INTEGER
    ACCESS read-only
    STATUS mandatory
    DESCRIPTION
        "A link is defined to be between one resource and another. This
         object identifies is a partial definition of one end of the link.
         This object in conjuntion with chasLinkFromLocType and
         chasLinkFromLoc identfiy the start of the link."
    ::= { chasLinkEntry 4 }

chasLinkFromIfNumber OBJECT-TYPE
    SYNTAX INTEGER
    ACCESS read-only
    STATUS mandatory
    DESCRIPTION
        "This object can be used to correlate the resource to an entry in
         an ifTable visible through the entity to which this resource belongs.
         Without this object there is no correlation between a resource and