Ipx Datagram Structure - Avaya P580 User Manual

Chapter 16

IPX Datagram Structure

16-2
The IPX datagram contains an IPX header and any data to be transferred on
the network. The IPX header is a 30 byte header that contains 10 fields.
Figure 16-1 illustrates a conceptual view of an IPX datagram:
Figure 16-1. IPX Datagram in Detail
Checksum (2 bytes)
Packet Length (2 bytes)
Transport Control (1 byte)
Packet Type (1 byte)
Destination Network (4 bytes)
Destination Node (6 bytes)
Destination Socket (2 bytes)
Source Network (4 bytes)
Source Node (6 bytes)
Source Socket (2 bytes)
See Table 16-1 for a description of the IPX datagram Structure fields:
Table 16-1. IPX Datagram Structure Fields
Field Definition
Checksum Provides integrity checking.
Note:
Packet Length Length (in bytes) of the packet.
Transport Control Number of routers a packet has traversed. This is used to
discard a packet if the packet traverses a maximum
number of routers (16).
User Guide for the Avaya P580 and P882 Multiservice Switches, v6.0
Checksum is normally not enabled in IPX
networks and is usually set to 0xFFFF.
30 Bytes
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