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- Network Working Group S. Bostock
- Request for Comments: 1420 Novell, Inc.
- Obsoletes: 1298 March 1993
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- SNMP over IPX
-
- Status of this Memo
-
- This RFC specifies an IAB standards track protocol for the Internet
- community, and requests discussion and suggestions for improvements.
- Please refer to the current edition of the "IAB Official Protocol
- Standards" for the standardization state and status of this protocol.
- Distribution of this memo is unlimited.
-
- Abstract
-
- This document defines a convention for encapsulating Simple Network
- Management Protocol (SNMP) [1] packets over the transport mechanism
- provided via the Internetwork Packet Exchange (IPX) protocol [2].
-
- 1. Introduction
-
- The Simple Network Management Protocol (SNMP) as defined in [1] is
- now used as an integral part of the network management framework for
- TCP/IP-based internets. Together with its companion standards, which
- define the Structure of Management Information (SMI) [3,4], and the
- Management Information Base (MIB) [5], the SNMP has received
- widespread deployment in many operational networks running the
- Internet suite of protocols.
-
- The success of SNMP in the TCP/IP environment has led to its
- deployment in non TCP/IP-based internets. This specification
- describes the mapping of SNMP onto the Internetwork Packet Exchange
- (IPX) protocol [2] used in Novell NetWare environments.
-
- As noted in [6], the preferred mapping for SNMP is onto UDP [7]. As
- such, this specification is intended for use in environments where
- UDP transport is not available. No aspect of this specification
- should be construed as a suggestion that, in a heterogeneous
- transport environment, a managed agent should support more than one
- mapping. Conversely, management stations are strongly encouraged to
- support mappings of SNMP onto all popular transports.
-
- 2. Mapping SNMP onto IPX
-
- Mapping SNMP onto IPX is straight-forward since IPX provides a
- datagram service very similar to that provided by IP/UDP.
-
-
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- Bostock [Page 1]
-
- RFC 1420 SNMP over IPX March 1993
-
-
- Although modifications have been made elsewhere in the NetWare
- protocol suite, IPX is identical to the Xerox Internet Datagram
- Protocol (IDP) [8]. The socket address space authority is
- administered by Novell.
-
- SNMP packets will always set the Packet Type field in the IPX header
- to 4 (i.e., Packet Exchange Packet).
-
- 2.1 Socket Assignments
-
- SNMP protocol entities will receive GetRequest-PDU, GetNextRequest-
- PDU, and SetRequest-PDU messages on socket 36879 (Destination Socket
- field set to hexadecimal 900F), and Trap-PDU messages on socket 36880
- (Destination Socket field set to hexadecimal 9010).
-
- GetResponse-PDU messages will be addressed to the IPX address and
- socket from which the corresponding GetRequest-PDU, GetNextRequest-
- PDU, or SetRequest-PDU originated.
-
- 2.2 Traps
-
- When SNMP traps are sent over IPX, the agent-addr field in the Trap-
- PDU contains the IP-address "0.0.0.0". An SNMP manager may ascertain
- the source of the trap based on information provided by the transport
- service
-
- 2.3 Maximum Message Size
-
- Although SNMP does not require conformant implementations to accept
- messages whose length exceeds 484 bytes, it is recommended that
- implementations support a maximum SNMP message size of 546 bytes (the
- maximum size allowed under IPX). Furthermore, this limit is the
- maximum packet length guaranteed to traverse IPX routers which do not
- provide fragmentation. Implementors may choose to use longer packet
- lengths if the maximum is known, which depends on the intermediate
- routers and/or intermediate datalink layer protocols.
-
- 3. Document Procurement
-
- This section provides contact points for procurement of selected
- documents.
-
- A complete description of IPX may be secured at the following
- address:
-
-
-
-
-
-
-
- Bostock [Page 2]
-
- RFC 1420 SNMP over IPX March 1993
-
-
- Novell, Inc.
- 122 East 1700 South
- P. O. Box 5900
- Provo, Utah 84601 USA
- 800 526 5463
-
- Novell Part # 883-000780-001
-
- The specification for IDP (part of XNS) may be ordered from:
-
- Xerox System Institute
- 475 Oakmead Parkway
- Sunnyvale, CA 94086
- Attn.: Fonda Pallone
- (415) 813-7164
-
- 4. Acknowledgments
-
- This specification was derived from RFC 1298, based on discussions in
- the IETF's "SNMP over a Multiprotocol Internet" Working Group.
-
- 5. References
-
- [1] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
- Network Management Protocol", STD 15, RFC 1157, SNMP Research,
- Performance Systems International, Performance Systems
- International, MIT Laboratory for Computer Science, May 1990.
-
- [2] Novell, Inc., "NetWare System Technical Interface Overview", part
- number 883-000780-001, June 1989.
-
- [3] Rose M., and K. McCloghrie, "Structure and Identification of
- Management Information for TCP/IP-based internets", STD 16, RFC
- 1155, Performance Systems International, Hughes LAN Systems, May
- 1990.
-
- [4] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",
- STD 16, RFC 1212, Performance Systems International, Hughes LAN
- Systems, March 1991.
-
- [5] Rose M., and K. McCloghrie, Editors, "Management Information Base
- for Network Management of TCP/IP-based Internets", STD 17, RFC
- 1213, Hughes LAN Systems, Inc., Performance Systems
- International, March 1991.
-
- [6] Kastenholz, F., "SNMP Communications Services", RFC 1270,
- Clearpoint Research Corporation, October 1991.
-
-
-
-
- Bostock [Page 3]
-
- RFC 1420 SNMP over IPX March 1993
-
-
- [7] Postel J., "User Datagram Protocol", STD 6, RFC 768,
- USC/Information Sciences Institute, August 1980.
-
- [8] Xerox System Integration Standard, "Internet Transport
- Protocols", XSIS 028112, Xerox Corporation, December 1981.
-
- 6. Security Considerations
-
- Security issues are not discussed in this memo.
-
- 7. Author's Address
-
- Steve Bostock
- Novell, Inc.
- 2180 Fortune Drive
- San Jose, CA 95131
-
- Phone: 408 473 8203
- Fax: 408 435 1706
- Email: steveb@novell.com
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- Bostock [Page 4]
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