RFC 1420 (rfc1420) - Page 2 of 4
SNMP over IPX
Alternative Format: Original Text Document
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