Alaxala AX2500S, Troubleshooting Manual

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3 Troubleshooting Functional Failures During Operation
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information about the destination MAC address that caused the communication
failure.
> show mac-address-table
Date 2010/08/09 21:30:08 UTC
Aging time : 300
MAC address VLAN Type Port-list
0012.e2cf.fd5d 1 Dot1x 0/6
0012.e203.0110 1 Dynamic 0/15
0012.e203.0132 1 Dynamic 0/49
0012.e27f.fffa 1 Snoop 0/6
0012.e2a5.429c 2 Dynamic 0/24,0/48
0012.e2a5.e756 2 MacAuth 0/50
0012.e2a5.e895 4094 Static 0/24,0/48
0012.e2a5.ee4e 4094 WebAuth 0/5
>

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 3.8.1 Communication failures occurring when IEEE 802.1X is used .
When WebAuth is displayed for Type :
See 3.8.2 Communication failures occurring when Web authentication is
used .
When MacAuth is displayed for Type :
See 3.8.3 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 QoS control shaper. 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
3.15.1 Checking the filtering
and QoS control configuration information .