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Network Working Group                                  M. SchoffstallRequest for Comments: 1089           Rensselaer Polytechnic Institute                                                             C. Davin                                  MIT Laboratory for Computer Science                                                             M. Fedor                                                       NYSERNet, Inc.                                                              J. Case                                 University of Tennessee at Knoxville                                                        February 1989SNMP over EthernetStatus of This Memo   This memo describes an experimental method by which the Simple   Network Management Protocol (SNMP) as specified in [1] can be used   over Ethernet MAC layer framing [2] instead of the Internet UDP/IP   protocol stack.  This specification is useful for LAN based network   elements that support no higher layer protocols beyond the MAC sub-   layer.  Distribution of this memo is unlimited.Overview and Rational   SNMP has been successful in managing Internet capable network   elements which support the protocol stack at least through UDP the   connectionless Internet transport layer protocol.  As originally   designed, SNMP is capable of running over any reasonable transport   mechanism (not necessarily a transport protocol) that supports bi-   directional flow and addressability.   Many non-Internet capable network elements are present in local   networks; for example, repeaters and wiring concentrators.  They   include both addressability, and programmable intelligence.  These   devices are widely used and increasingly important yet, for the most   part, invisible except through proprietary mechanisms.Specification   Almost all Internet capable network elements use the same mechanism   for encapsulation of the Internet protocol stack regardless of   conformity with the physical characteristics of Ethernet or 802.3,   this mechanism is specified in [3] and [4].  This specification   continues that style with the assignment (by XEROX) of 33100   (hexadecimal 814C) to the Ethernet Type field for SNMP.  The data   portion of the Ethernet frame would then be a standard SNMP message   as specified in [1].Schoffstall, Davin, Fedor & Case                                [Page 1]

RFC 1089                   SNMP over Ethernet              February 1989References     [1]  Case, J., Fedor, M., Schoffstall, M., and J. Davin, "A Simple          Network Management Protocol",RFC-1067, University of          Tennessee at Knoxville, NYSERNet, Inc., Rensselaer Polytechnic          Institute, and Proteon, Inc., August 1988.     [2]  DEC, "The Ethernet - A Local Area Network", Version 2.0,          Digital Equipment Corporation, Intel Corporation, Xerox          Corporation.     [3]  Hornig, C., "A Standard for the Transmission of IP Datagrams          over Ethernet Networks",RFC-894, Symbolics, April 1984.     [4]  Postel, J., and J. Reynolds, "A Standard for the Transmission          of IP Datagrams over IEEE 802 Networks",RFC-1042, USC          Information Sciences Institute, February 1988.Authors' Addresses   Marty Schoffstall   NYSERNET Inc.   Rensselaer Technology Park   165 Jordan Road   Troy, NY 12180   Phone: (518) 276-2654   EMail: schoff@stonewall.nyser.net   Chuck Davin   MIT Laboratory for Computer Science, NE43-507   545 Technology Square   Cambridge, MA 02139   Phone: (617) 253-6020   EMail: jrd@ptt.lcs.mit.eduSchoffstall, Davin, Fedor & Case                                [Page 2]

RFC 1089                   SNMP over Ethernet              February 1989   Mark Fedor   Nysernet, Inc.   Rensselaer Technology Park   125 Jordan Road   Troy, NY 12180   (518) 283-8860   Phone: (518) 283-8860   EMail: fedor@patton.NYSER.NET   Jeff Case   University of Tennessee Computing Center   Associate Director   200 Stokely Management Center   Knoxville, TN 37996-0520   Phone: (615) 974-6721   EMail: case@UTKUX1.UTK.EDUSchoffstall, Davin, Fedor & Case                                [Page 3]