H3C S7500 Series Operation Manual page 167

Operation Manual – IP Address-IP Performance-IPX
H3C S7500 Series Ethernet Switches
Use the debugging ipx packet sap command to check whether the switch
receives the GNS packets.
Check whether SAP is enabled on the VLAN interface.
Use the display ipx interface command to check whether the VLAN interface is
enabled to respond to GNS requests. If GNS reply is disabled, use the undo ipx
sap gns-disable-reply command to enable the interface to respond to the GNS
requests.
Use the display ipx service table command to check whether the requested
service information is available in the service information table.
If the requested service information is available in the service information table,
but SAP still does not give response, you need to check whether the service
information is learnt from the interface where the request is received.
Symptom 7: SAP does not respond to a GNS request through Round-Robin.
Solutions:
Use
Round-Robin is enabled.
If Round-Robin is enabled, check whether multiple equivalent service entries 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.
IV. 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 using the display ipx routing-table
verbose command.
Solutions:
Use the display current-configuration command to view the maximum number
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
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
reaches the limit, use the ipx route max-reserve-path command to set a higher
limit to accommodate new dynamic route information.
the display current-configuration command
3-16
Chapter 3 IPX Configuration
to check whether