Troubleshooting guide

4. Troubleshooting Communication Failures Due to a Resource Shortage
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If any of these log messages are output, you cannot set up any additional functionality that uses the
VLAN identification table. You must review your network configuration and change it so that the
switch can operate below the capacity limit.
In Nos. 1, 2, and 3 in the above table, no entry was added to the VLAN identification table with
the last configuration command. In Nos. 4 and 5, no entry of the last authenticated terminal was
added to the VLAN identification table. To reconfigure the settings, follow these steps:
1. Review your configuration so that when, in a later step, you make more space available in the
table, the IEEE 802.1X, Web authentication, or authentication VLAN will not add any new
entries to the VLAN identification table.
2. Delete the executed command (for Nos. 1, 2, and 3 in the above table).
3. Make more space available in the VLAN identification table.
#
4. Re-execute the command (for Nos. 1, 2, and 3 in the above table), re-authenticate (for No. 4),
or review the number of users authenticated by the authentication server (for No. 5).
#: You must delete some registered entries to make more space available in the VLAN
identification table. The following table lists the procedures for deleting various types of entries.
Table 4-6: How to delete VLAN identification table entries
#1: For details, see the manual Configuration Command Reference.
#2: For details, see the manual Operation Command Reference.
5 Authentication VLAN • The registration of the MAC address failed.
Note: This log message is displayed when the show fense
logging command is executed.
6 Web authentication (dynamic VLAN mode) •
The login failed because of hardware
restriction.
Note: This log message is displayed when the show
web-authentication logging command is executed.
No. Entry to be deleted Procedure
1 Tag translation Execute the
no switchport vlan mapping enable and no
switchport vlan mapping
configuration commands.
#1
2 Protocol VLAN Execute the no switchport protocol configuration
command to clear the protocol VLAN settings.
#1
3 MAC VLAN static entry
Execute the
no mac-address configuration command.
#1
4 IEEE 802.1X
Execute the
clear dot1x auth-state command.
#2
5 Authentication VLAN Review the number of users authenticated by the authentication
server.
6 Web Authentication Execute the
clear web-authentication auth-state
command.
#2
No. Trigger Loge message