3Com MSR 50 Series Configuration Manual page 2229

outgoing interface is down. When the route becomes active, it can be
advertised as a RIP route.
If the static route exists in the routing table, check its hops. If hops are more
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than or equal to 15, the static route can not be advertised.
Troubleshooting IPX SAP
Symptom 1: Unable to add a static service information item to SIT
Solution:
Use the display ipx service-table inactive command to see whether the item
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is inactive. If so, it indicates that there is no active route to the destination
server.
Use the display ipx service-table command to see whether the service
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information items reach the upper limit. IPX supports up to 10240 service
information items, 2048 service types and 5120 static service items.
Symptom 2: No active service information item in SIT.
Solution:
Use the display ipx service-table inactive command to check whether the
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service information item is inactive. If so, it indicates that there is no active
route to the destination server.
Use the display ipx interface command to ensure that the interface is UP and
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SAP is enabled.
Use the display ipx routing-table to ensure that the active route to the server
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has a hop number less than 15.
Another possible reason is that there is no sufficient memory to add the service
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information item to the SIT. You can remove some static service information
item.
Symptom 3: No new dynamic service information items in SIT.
Solution:
Use the debugging ipx packet and debugging ipx sap packet verbose
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commands to check whether relevant packets are received. If no packet is
received, problems in lower layer network connection may exist.
If IPX is disabled, use the ipx enable command in system view to enable IPX.
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Use the display ipx interface command to make sure that IPX is configured
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on relevant interfaces.
If SAP is disabled, use the undo ipx sap disable command to enable SAP
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Check whether the number of SAP service information items reaches the upper
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limit. The IPX implementation supports up to 10240 service information items
and 2048 service types.
The MTU of SAP should be less that of the physical layer.
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Symptom 4: No updates are received on an interface.
Troubleshooting IPX Configuration 2229