H3C S7500 Series Operation Manual page 166

Operation Manual – IP Address-IP Performance-IPX
H3C S7500 Series Ethernet Switches
Check whether the relevant packets are received using the debugging ipx packet
and debugging ipx sap packet verbose commands. If the packets are not
received, the underlying network connection is abnormal.
Check whether IPX is disabled. If yes, enable IPX using the ipx enable command.
Check whether IPX is configured on the VLAN interface using the display ipx
interface command.
Check whether SAP is disabled. If yes, enable SAP using the undo ipx sap
disable command.
Use the display ipx service-table command to check whether the number of SAP
service entries is under the limit. IPX can support 10,240 service entries with 5,120
service types.
Check whether the MTU of SAP packets is less than or equal to the MTU at the
physical layer.
Symptom 4: No update packet is received on the VLAN interface.
Solutions:
Check whether there are update packets using the debugging ipx packet and
debugging ipx sap packet verbose commands. All the received/transmitted
packets can be displayed through debugging information. If there are no update
packets, it indicates that the underlying network connection is abnormal.
Use the display ipx interface command to check whether SAP is enabled.
Check whether the hop count of the active route to the server is smaller than 16.
Use the display current-configuration command to check whether the update
interval is too long.
Use the display current-configuration command to check whether the triggered
updates feature is configured on the VLAN interface. Periodical update is disabled
when the triggered updates feature applies.
Symptom 5: No update packets are sent out of the VLAN interface.
Solutions:
Check whether there are update packets using the debugging ipx packet and
debugging ipx sap packet verbose commands. Check whether the MTU of the
SAP packets is smaller than the MTU of the VLAN interface to guarantee that they
are not dropped by the underlying layer.
Use the display current-configuration command to check whether the
triggered-update feature is configured on the VLAN interface. Periodical update is
disabled when the triggered-updates feature applies.
Check whether all service information is learnt from the VLAN interface. Then
check whether split-horizon is enabled on the VLAN interface.
Symptom 6: SAP does not respond to GNS requests.
Solutions:
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Chapter 3 IPX Configuration