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X.25 Management Information Base (x25mib) Charter Status: Concluded May, 1993 Chair(s): Dean Throop Description of Working Group: This Working Group will produce a set of three documents that describe the Management Information Base for X.25. The first document will specify the objects for the X.25 Link Layer. The second document will specify the objects for the X.25 Packet Layer. The third document will specify the objects for managing IP over X.25. The Working Group need not consider the Physical Layer because the ``Definition of Managed Objects for RS-232-like Hardware Devices'' already defines sufficient objects for the Physical Layer of a traditional X.25 stack. Any changes needed at the Physical Layer will be addressed as part of that activity. The X.25 object definitions will be based on ISO documents 7776 and 8208 however nothing should preclude their use on other similar or interoperable protocols (i.e., implementations based on CCITT specifications). The objects in the Link and Packet Layer documents, along with the RS-232-like document, should work together to define the objects necessary to manage a traditional X.25 stack. These objects will be independent of any client using the X.25 service. Both of these documents assume the interface table as defined in MIB-II contains entries for the Link and Packet Layer interfaces. Thus these documents will define tables of media specific objects which will have a one to one mapping with interfaces of ifType ddn-x25, rfc877-x25, or lapb. The objects for the IP to X.25 convergence functions will be defined analogously with the ipNetToMedia objects in MIB II. The Working Group will endeavor to make each layer independent from other layers. The Link Layer will be independent of any Packet Layer protocol above it and should be capable of managing an ISO 7776 (or similar) Link Layer provider serving any client. Likewise the X.25 Packet Layer objects should be independent of the Link Layer below it and should be capable of managing an ISO 8208 (or similar) Packet Layer serving any client. The Working Group will also produce a third document specifying the objects for managing IP traffic over X.25. These objects will reside in their own table but will be associated with the X.25 interfaces used by IP. These objects will not address policy decisions or other implementation specific operations associated with X.25 connection management decisions except as explicitly described in existing standards. These objects will manage the packet flow between IP and the X.25 Packet Layer specifically including observation of packet routing and diagnosis of error conditions. Progress on the Link and Packet Layer documents will not depend on progress of the IP over X.25 document. The IP over X.25 document will proceed on a time available basis after work on the Link and Packet Layer documents and as such the Link and Packet Layers may be completed before the IP over X.25 work. All documents produced will be for use by SNMP and will be consistent with other SNMP objects, conventions, and definitions (such as Concise MIB format). To the extent feasible, the object definitions will be consistent with other network management definitions. In particular ISO/IEC CD 10733 will be considered when defining the objects for the X.25 Packet Layer. Request for Comments: |
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