RFC 1420 (rfc1420) - Page 2 of 4

SNMP over IPX

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