Troubleshooting guide

3. Troubleshooting Functional Failures During Operation
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address set for a VLAN by using the Layer 2 authentication functionality has not
been set for another VLAN in the configuration. A MAC address shown with an *
(asterisk) indicates that the entry has not been registered in the hardware due to
device capacity.
# show vlan mac-vlan
:
VLAN ID:500 MAC Counts:4
0012.e200.aa01 (static) 0012.e200.aa02 (static)
0012.e200.aa03 (static) 0012.e200.aa04 (dot1x)
VLAN ID:600 MAC Counts:1
* 0012.e200.aa01 (dot1x)
(2) Checking the port status
 Execute the show vlan detail operation command and make sure the port status
is
Up. If the status is Down, see 3.4 Network interface communication failures.
 Make sure the port status is
Forwarding. If it is Blocking, the cause is indicated in
parentheses. Check the status of the functionality that caused the problem.
[Cause]
VLAN: Suspend is specified for the VLAN.
CH: Transfer has been stopped by link aggregation functionality.
STP: Transfer has been stopped by the Spanning Tree functionality.
dot1x: Transfer has been suspended by the IEEE 802.1X functionality.
ULR: Transfer has been suspended by uplink redundancy functionality.
AXRP: Transfer has been suspended by Ring Protocol.
> show vlan 2048 detail Date 2008/10/29 03:21:25 UTC
VLAN counts: 1
VLAN ID: 2048 Type: Port based Status: Up
:
:
Port Information
0/3 Up Forwarding Untagged
0/4 Up Forwarding Untagged
0/5 Down - Untagged
0/6 Down - Untagged
(3) Checking the MAC address table
(a) Checking the status of MAC address learning
 Execute the
show mac-address-table operation command and check the
information about the destination MAC address that caused the communication
failure.
> show mac-address-table
Date 16.03.09 11:24:47 PM UTC
Aging time : 300
MAC address VLAN Type Port-list
0000.0088.7701 2 Dynamic 0/49-50
000b.972f.e22b 2 Dot1x 0/35
0000.ef01.34f4 1000 Static 0/30
0000.ef01.3d17 1000 Static 0/30
000b.9727.ee41 1024 WebAuth 0/28