1. CORBA/TMN Interworking Solutions
Hewlett-Packard Co
Telecom Management Division

2. Business Drivers
Emergence of CORBA as the object distribution technology of choice
Need to smoothly integrate legacy management paradigms
Cost of telecommunications-specific solutions
Need to address end-to-end management across different management technologies
Solution must preserve industry investments in information models and deployed systems

3. Interworking scenarios
CORBA
manager
Gateway
OSI
agent
IIOP
CMIP
OSI
manager
Gateway
CORBA
agent
CMIP
IIOP
CORBA
manager
CORBA
agent
IIOP
CORBA
manager
Gateway
Gateway
CORBA
agent
IIOP
CMIP
IIOP

4. Gateway levels “Repeater”: Transport translation “Bridge”: Encoding
IIOP vs CMIP/SNMP
“Bridge”: Encoding
CDR vs BER
“Gateway”: Services and concepts
CORBA vs OSI mgmt/SNMP mgmt
Synchronous vs message-based
Single answer vs multi answer (to one operation)
Single operation vs multi operation (per message)
Connection transparent vs explicit (OSI)
Object model vs table model (SNMP)

5. Object granularity Coarse grained Fine grained
One CORBA object represents many domain objects
Fewer, more complex, “fatter” objects
Every call carries target object information
Operations generic to multiple objects
Fine grained
One CORBA object per domain object
Many, simpler, “thin” objects
Target object is implicit
Operations specific to the object, type safe

6. HP TMD approach Dual solution, covering different target customers
“BMP Server (a.k.a CORBA-TMN Bridge)”
Supports transport translation only (“IIOP <-> CMIP”)
One CORBA object per association (“Coarse grained”)
Appropriate for shops with current GDMO/ASN.1/CMIP expertise and tools, and applications to be migrated
Not concerned with CORBA model, but only CORBA distribution
“CORBA-TMN Gateway (a.k.a JIDM Gateway)”
Supports translation at all levels (Transport, Encoding, Object)
One CORBA object per CMIP association (“Coarse grained”) and/or one CORBA object per domain object (“Fine grained”)
Appropriate for shops with long-term CORBA view

7. BMP Server Provides “repeater” functionality
CORBA programmer needs to know GDMO/ASN.1 and model
Low transparency
Encoding is done in CORBA program
Suitable for “migration” situations
CORBA
OSI
OSI
agent
CORBA
manager
BMP
Server
OSI
agent
CORBA
manager
IIOP
(BER) Q3
GDMO2
GDMO 1&2
GDMO 2
GDMO1

8. CORBA-TMN Gateway Full CORBA solution Dynamic implementation
JIDM Compliant Implementation
Clients do not need to know GDMO/ASN.1 or CMIP
Complete transparency (encoding, model, protocol) from CORBA space
Dynamic implementation
No recompilation needed
Embedded (or external) Notification service
Extremely scalable without loss of performance
Federated (using delegation)
CORBA
OSI
OSI
agent
CORBA
manager
Dynamic
Gateway
Notif
OSI
agent
CORBA
manager
IIOP Q3
GDMO2
IDL1&2
IDL2
GIR
GDMO1

9. JIDM NMF/OpenGroup Joint Inter-Domain Management group Design Goals
Specification Translation:
Provides algorithms for information model translation
GDMO/ASN.1 <-> IDL
Interaction Translation
Dynamic behavioral conversion
OSI Management model in CORBA
Design Goals
Completeness
Simplicity
Reuse of OMG specifications
Freedom of implementation
Domain Familiarity (Corba programmer sees Q3 IDL
JIDM is a NMF/Opengroup standard. This standard has also being submitted to the OMG for adoption which is expected by year end.
Leveraging OMG Naming, Lifecycle, Event Channel and Notification. 1

10. Manager/Agent model MIB Management Protocol Information Model Manager
Operations
Notifications
Management
Protocol

11. Extended Mgr/Agent model
Manager Domain
Managed Domain
Notifications
Operations
Manager Domain
Title
Manager Entity/Object
Managed Entity/Object
Port

12. JIDM Interface taxonomy
Generic
Common to all management models
Abstract, simple and extensible
Management-model specific
Specific to a management model (OSI)
Generic to all information models within that management model
Not necessarily type safe
Information model specific
Specific to a given information model
Concrete and type safe
Automatic generation from foreign information models (GDMO/ASN.1)

13. Structural Model ... JIDM Common Facilities OSI Management Facilities
Access to management domains
Manipulation of MOs (access+creation)
Event notifications
OSI Management Facilities
SNMP Management Facilities
CMIS operations (GET, SET, ACTIONS...)
Callback interfaces for asynchronous operations
OSI names mapping
SNMP operations
To be completed
...
X.721
Specific interfaces for every X.721 MOCs

14. Scalable architecture
CORBA
Manager
OSI
Managed
Domain
JIDM gateway
Data translator
IDL
Stubs
DII
IDL
Skel
DSI
Dyn
Any
Dyn
BER
Mutithreaded
Reg/Rsp mgr
ORB 2.x
ORB 2.2
CMIP
Infrastructure
CMIP
Infrastructure
GIR
IIOP
CMIP

15. Conclusion READY FOR PRIME TIME!
Full functionality of underlying management model
Retains familiar concepts in each management domain
Flexible
coarse and fine grained object approaches
type safe and generic interactions
Preserves investment in information models and deployed systems
Uses CORBA to simplify the implementation
Consistent with CORBA OMA
READY FOR PRIME TIME!