IPX/SPX Configuration and Management Manual

NonStop™ IPX/SPX PTrace Facility
IPX/SPX Configuration and Management Manual—425731-001
4-12
Inbound Packet Trace Record
OUTBOUND ipx
indicates an outbound IPX packet with source and destination IPX addresses
separated by ->.
CheckSum
displays the checksum of data in extended memory. This is set to FFFF (-1) by IPX
implementations. This field is neither computed for sending data nor checked when
receiving data.
Length
displays the total length of the IPX header plus data. The maximum packet length is
set by the higher-level protocol layer (such as SPX or NCP). NonStop™ IPX/SPX
imposes this limit on the IPX packet size.
PktType
specifies the higher-level protocol associated with the packet. IPX uses this field and
the socket number in the destination address to identify the process for which an
incoming packet is intended (see IPX Addresses
on page A-6).
TC
transport control (TC) is used by IPX routers and denotes the number of routers an
IPX packet crossed (hops used). The originating station sets this field to 0.
OCB
displays the IPXPROTO process open control block (OCB) index for the NonStop™
Himalaya S-series client’s OCB if this request is related to a particular OPEN;
otherwise, OCB displays a zero.
IPX Data
indicates that data is being sent, in hexadecimal.
Inbound Packet Trace Record
The trace record showing an inbound IPX packet is formatted as follows:
04/25/2000 18:00:43.766252 >000.000203 #75 IPX Interface
INBOUND ipx: 0x7201916A:00608CE985A7:0452 -> 0x7201916A:FFFFFFFFFFFF:0452
CheckSum: %HFFFF Length: 160 PktType: %H00 TC: %H00 OCB: 0
IPX Data:
000: 0002 0387 4850 3238 3638 3842 5F30 3830 3030 3933
00C: 395F 3000 0000 0000 0000 0000 0000 0000 0000 0000
018: 0000 0000 AC00 0000 0800 0936 0C09 0000 0001