Socket Number - Novell NETWARE 6-DOCUMENTATION Manual

Socket Number

Table 2
20
Internetwork Packet Exchange
The socket number is the 2-byte hexadecimal number that identifies the
ultimate destination of an IPX packet within the node. This destination is
actually a process —such as routing (RIP) or advertising (SAP)—that
operates within the node. Because several processes are typically operating at
any given time, socket numbers provide a type of mail slot by which each
process can identify itself to IPX.
A process that must communicate on the network requests that a socket
number be assigned to it. Any packets that IPX receives that are addressed to
that socket are passed to the process. Socket numbers provide a quick method
of routing packets within a node.
Table 2 lists some socket numbers and processes used in the NetWare
environment.
NetWare Socket Numbers and Processes
Socket Number
0x451
0x452
0x453
0x455
0x456
0x9001
0x9004
Socket numbers between 0x4000 and 0x7FFF are dynamic sockets; these are
used by workstations to communicate with file servers and other network
devices. Socket numbers between 0x8000 and 0xFFFF are well-known
sockets; these are assigned by Novell to specific processes. For example,
0x9001 is the socket number that identifies NLSP. Software developers
writing NetWare applications can contact Novell to reserve well-known
sockets.
Process
NCP
SAP
RIP
Novell NetBIOS
Diagnostics
NLSP
IPXWAN TM protocol
(For information about IPXWAN, refer to
Operation over WAN Links" on page
"IPX
24.)