WIMS> Enterprise Mgmt Sequence Diagram for WIMS

WIMS> Enterprise Mgmt Sequence Diagram for WIMS

WIMS> Enterprise Mgmt Sequence Diagram for WIMS

McDonald, Ira imcdonald at sharplabs.com
Thu Nov 17 17:27:07 EST 2005


Hi folks,                                    Thursday (17 November 2005)

Below is a second example sequence of operations diagram, as per my
working group last call comment on WIMS Abstract Protocol spec.

I propose:

(1) Rename existing section 4.3 from 'Sequence of Operations' to
    'Example of Fleet Management' (because it contains ONLY an example
    and does NOT normatively define any WIMS sequence of operations).

(2) Annotate the diagram in section 4.3 with numbered steps and append
    numbered notes that are more complete (rather than most of the text
    in section 4.3).

(3) Add a new section 4.4 'Example of Enterprise Management' containing
    the (Visio version of the) diagram below and explanatory notes.

Comments?

Cheers,
- Ira


Ira McDonald (Musician / Software Architect)
Blue Roof Music / High North Inc
PO Box 221  Grand Marais, MI  49839
phone: +1-906-494-2434
email: imcdonald at sharplabs.com
------------------------------------------------------------------------

WIMS Manager            WIMS Proxy              SNMP Legacy     Step In
(Enterprise)            (Agent/Manager)         Managed Entity  Notes
------------            ---------------         --------------  -------
Connect and authenticate                                          (1)
    ------------------------>
                            |
                        Accept and authenticate                   (2)
    <------------------------
    |
    |
BeginManagement                                                   (3)
    ------------------------>
(managerURI {W-Manager},    |
 agentReference {W-Agent},  |
 operations, actions,       |
 objects,                   |
 schedule {w/ action        |
  SubscribeForAlerts})      |
                            |
                        BeginManagementResponse                   (4)
    <------------------------
    |                   (statusString,
    |                    operations, actions,
    |                    objects)
    |
    |
Disconnect Indication                                             (5)
    ------------------------>
                            |
                        Disconnect OK                             (6)
    <------------------------


                        {SubscribeForAlerts scheduled action}     (7)
                        Create Subscription object and
                        Connect and authenticate
    <------------------------
    |
Accept and authenticate                                           (8)
    ------------------------>
                            |
                            |
                        SendReports                               (9)
    <------------------------
    |                   (senderReference {W-Agent},
    |                    managerURI {W-Manager},
    |                    reports {list of events
    |                     in Subscription}
    |
SendReportsResponse                                              (10)
    ------------------------>
(statusString,
 unsupportedElements)
                            |
                            |
                        Disconnect Indication                    (11)
    <------------------------
    |
Disconnect OK                                                    (12)
    ------------------------>


Connect and authenticate                                         (13)
    ------------------------>
                            |
                        Accept and authenticate                  (14)
    <------------------------
    |
    |
ExecuteAction                                                    (15)
    ------------------------>
(managerURI {W-Manager},    |
 agentReference {W-Agent},  |
 action {GetElements of     |
  ManagerAgentSupported})   |
                            |
                        {GetElements immediate action}           (16)
                        SendReports
    <------------------------
    |                   (senderReference {W-Agent},
    |                    managerURI {W-Manager},
    |                    reports {list of WIMS or
    |                     legacy agents})
    |
SendReportsResponse                                              (17)
    ------------------------>
(statusString,              |
 unsupportedElements)       |
                            |
                        ExecuteActionResponse                    (18)
    <------------------------
                        (statusString,
                         unsupportedElements)
    |
    |
Disconnect Indication                                            (19)
    ------------------------>
                            |
                        Disconnect OK                            (20)
    <------------------------


Connect and authenticate                                         (21)
    ------------------------>
                            |
                        Accept and authenticate                  (22)
    <------------------------
    |
    |
ExecuteAction                                                    (23)
    ------------------------>
(managerURI {W-Manager},    |
 agentReference {W-Agent},  |
 action {GetElements of     |
  legacy AgentInfo})        |
                            |
                        {GetElements immediate action}           (24)
                        SNMP Get
                            ------------------------>
                        (SNMPv2-MIB.sysDescr)       |
                                                    |
                                                SNMP GetResponse (25)
                            <------------------------
                            |                   (SNMPv2-MIB.sysDescr)
                            |
                        SendReports                              (26)
    <------------------------
    |                   (senderReference {W-Agent},
    |                    managerURI {W-Manager},
    |                    reports {legacy AgentInfo})
    |
SendReportsResponse                                              (27)
    ------------------------>
(statusString,              |
 unsupportedElements)       |
                            |
                        ExecuteActionResponse                    (28)
    <------------------------
                        (statusString,
                         unsupportedElements)
    |
    |
Disconnect Indication                                            (29)
    ------------------------>
                            |
                        Disconnect OK                            (30)
    <------------------------



Notes:
(1) Top-level WIMS Manager (on left in diagram) starts downstream
    connection to WIMS Proxy including mutual authentication.

(2) WIMS Proxy (in middle of diagram) accepts incoming connection
    from WIMS Manager and completes mutual authentication.

(3) WIMS Manager proposes management association with WIMS Proxy by
    sending BeginManagement request specifying its supported objects,
    operations, and actions and Schedule object (w/ SubscribeForAlerts
    action).

(4) WIMS Proxy (Agent) accepts management association with WIMS Manager
    by replying with BeginManagement response, specifying its own
    supported objects, operations, and actions and a PWG standard status
    of "SuccessfulOk".

(5) WIMS Manager sends disconnect indication to WIMS Proxy.

(6) WIMS Proxy sends disconnect OK to WIMS Manager.

--------------------

(7) WIMS Proxy (Agent) processes SubscribeForAlerts action (in Schedule)
    by creating Subscription object (for notifications) and
    starting upstream connection to WIMS Manager.

(8) WIMS Manager accepts incoming connection from WIMS Proxy and
    completes mutual authentication.

(9) WIMS Proxy sends SendReports request to WIMS Manager specifying
    NotifyEvents element (list of events) from Subscription object.

(10) WIMS Manager replies with SendReports response specifying PWG
    standard status of "SuccessfulOk".

(11) WIMS Proxy sends disconnect indication to WIMS Manager.

(12) WIMS Manager sends disconnect OK to WIMS Proxy.

--------------------

(13) WIMS Manager starts downstream connection to WIMS Proxy including
    mutual authentication.

(14) WIMS Proxy accepts incoming connection from WIMS Manager and
    completes mutual authentication.

(15) WIMS Manager reads list of supported WIMS or legacy agents by
    sending ExecuteAction request specifying GetElements action for
    ManagerAgentSupported element in Manager object.

(16) WIMS Proxy (Agent) processes GetElements action by sending
    SendReports request specifying ManagerAgentSupported element from
    Manager object.

(17) WIMS Manager replies with SendReports response specifying PWG
    standard status of "SuccessfulOk".

(18) WIMS Proxy (Agent) completes ExecuteAction operation by sending
    ExecuteAction response specifying PWG standard status of
    "SuccessfulOk".

(19) WIMS Manager sends disconnect indication to WIMS Proxy.

(20) WIMS Proxy sends disconnect OK to WIMS Manager.

--------------------

(21) WIMS Manager starts downstream connection to WIMS Proxy including
    mutual authentication.

(22) WIMS Proxy accepts incoming connection from WIMS Manager and
    completes mutual authentication.

(23) WIMS Manager reads description of legacy agent by sending
    ExecuteAction request specifying GetElements action for AgentInfo
    element in (mapped) Agent object.

(24) WIMS Proxy processes GetElements action by sending SNMP Get request
    for sysDescr element in SNMP Agent MIB (RFC 3418, updates RFC 1213)
    SNMP Agent in legacy system (on right in diagram).

(25) SNMP Agent in legacy system replies with SNMP Get response
    specifying sysDescr to WIMS Proxy.

(26) WIMS Proxy continues processing of GetElements action by sending
    SendReports request specifying AgentInfo (mapped from sysDescr) to
    WIMS Manager.

(27) WIMS Manager replies with SendReports response specifying PWG
    standard status of "SuccessfulOk".

(28) WIMS Proxy (Agent) completes ExecuteAction operation by sending
    ExecuteAction response specifying PWG standard status of
    "SuccessfulOk".

(29) WIMS Proxy sends disconnect indication to WIMS Manager.

(30) WIMS Manager sends disconnect OK to WIMS Proxy.

--------------------



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