Troubleshooting guide

3. Troubleshooting Functional Failures During Operation
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0010.c6ce.e1c6 1024 MacAuth 0/29
0012.e284.c703 1024 Dynamic 0/49-50
001b.7887.a492 1024 Dynamic 0/49-50
0100.5e00.00fc 1024 Snoop 0/49-50
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 Take one of the actions described below according to the value displayed for Type.
When
Dynamic is displayed for Type:
The MAC address learning information might not have been updated. Use the
clear mac-address-table operation command to clear the old information.
Information can also be updated by sending frames from the destination
device.
When
Static is displayed for Type:
Use the
mac-address-table static configuration command to check the
destination port for the transfer.
When
Snoop is displayed for Type:
See
3.5.5 Multicast forwarding by IGMP snooping is not possible and 3.5.6
Multicast forwarding by MLD snooping is not possible.
When
Dot1x is displayed for Type:
See
3.7.1 Communication failures occurring when IEEE 802.1X is used.
When
WebAuth is displayed for Type:
See
3.7.2 Communication failures occurring when Web authentication is
used.
When
MacAuth is displayed for Type:
See
3.7.3 Communication failures occurring when MAC-based authentication
is used.
 If the target MAC address is not displayed, flooding is performed. If the MAC address
is not displayed, but communication is still disabled, check whether inter-port
forwarding suppression has been set. Also check whether a threshold that is too low
is set for the storm control functionality.
(4) Checking filtering and QoS control
Certain packets might have been discarded by filtering or packets might have been
discarded by the shaper of QoS control. Make sure that the setting conditions for filtering
and QoS control in the configuration are correct, and that the shaper is used appropriately
in the system configuration. For details about the procedure, see
3.13.1 Checking the
filtering and QoS control configuration information.
3.5.2 Failures occurring when the Spanning Tree functionality is used
If Layer 2 communication fails or the operating status of Spanning Tree does not conform to
the network configuration when the Spanning Tree functionality is used, use the analysis
method described below to isolate the cause of the problem. For Multiple Spanning Tree,
perform the check for each CIST or each MST instance. When checking a route bridge, for
example, replace the word route bridge with CIST route bridge or route bridge for each
MST instance.