3Com 7757 Configuration Manual page 151

If Round-Robin is enabled, check whether multiple equivalent service entries
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are available for the service request. The service entries are considered
equivalent only when they have the same RIP delay, RIP hop count, SAP hop
count and SAP preference.
Troubleshooting IPX routing management
Symptom 1: The current switch receives the routing information from a neighbor
device, but the route cannot be found on the current switch with the display ipx
routing-table verbose command.
Solutions:
Use the display current-configuration command to view the maximum number
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of dynamic routes for each destination network number. The corresponding
command is ipx route max-reserve-path. The default value is 4.
Use the display ipx routing-table verbose command to check whether the
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number of the existing dynamic routes to the destination network is under the
limit.
If the number of dynamic route entries with the destination network number
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reaches the limit, use the ipx route max-reserve-path command to set a higher
limit to accommodate new dynamic route information.
Troubleshooting IPX 151