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12-2 Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1
Chapter
IPX Datagram Structure
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 6-92 illustrates a conceptual view of an
IPX datagram:
Figure 6-92. IPX Datagram in Detail
Refer to Table 6-64 for a description of the IPX datagram Structure
fields:
Checksum (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)
Packet Length (2 bytes)
30 Bytes
Table 6-64. IPX Datagram Structure Fields
Field Definition
Checksum Provides integrity checking.
Note: Checksum is normally not enabled in IPX
networks and is usually set to 0xFFFF.
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).