Aruba 2530 - Page 13

A trunked port configured for 802.1X is blocked.............................................................. 315
QoS-related problems................................................................................................................. 315
Loss of communication when using VLAN-tagged traffic................................................. 316
Radius-related problems............................................................................................................. 316
The switch does not receive a response to RADIUS authentication requests................. 316
RADIUS server fails to respond to a request for service, even though the server's IP
address is correctly configured in the switch....................................................................316
MSTP and fast-uplink problems.................................................................................................. 317
Broadcast storms appearing in the network..................................................................... 317
STP blocks a link in a VLAN even though there are no redundant links in that VLAN.....317
Fast-uplink troubleshooting.............................................................................................. 317
SSH-related problems.................................................................................................................317
Switch access refused to a client..................................................................................... 317
Executing IP SSH does not enable SSH on the switch....................................................318
Switch does not detect a client's public key that does appear in the switch's public
key file (show ip client-public-key) ....................................................................318
An attempt to copy a client public-key file into the switch has failed and the switch
lists one of the following messages..................................................................................318
Client ceases to respond ("hangs") during connection phase..........................................318
TACACS-related problems..........................................................................................................318
Event Log......................................................................................................................... 318
All users are locked out of access to the switch...............................................................318
No communication between the switch and the TACACS+ server application................ 319
Access is denied even though the username/password pair is correct............................319
Unknown users allowed to login to the switch..................................................................319
System allows fewer login attempts than specified in the switch configuration................320
TimeP, SNTP, or Gateway problems........................................................................................... 320
The switch cannot find the time server or the configured gateway.................................. 320
VLAN-related problems...............................................................................................................320
Monitor port...................................................................................................................... 320
None of the devices assigned to one or more VLANs on an 802.1Q-compliant switch
are being recognized........................................................................................................320
Link configured for multiple VLANs does not support traffic for one or more VLANs.......320
Duplicate MAC addresses across VLANs........................................................................ 321
Fan failure................................................................................................................................... 321
Viewing transceiver information............................................................................................................. 321
Viewing information about transceivers (CLI)..............................................................................323
MIB support.................................................................................................................................323
Viewing transceiver information.................................................................................................. 323
Information displayed with the detail parameter...............................................................324
Viewing transceiver information for copper transceivers with VCT support................................ 328
Testing the Cable..............................................................................................................328
Using the Event Log for troubleshooting switch problems..................................................................... 330
Event Log entries........................................................................................................................ 330
Using the Menu........................................................................................................................... 338
Using the CLI.............................................................................................................................. 339
Clearing Event Log entries..........................................................................................................340
Turning event numbering on....................................................................................................... 341
Using log throttling to reduce duplicate Event Log and SNMP messages.................................. 341
Log throttle periods...........................................................................................................341
Example: of event counter operation................................................................................342
Reporting information about changes to the running configuration.............................................343
Debug/syslog operation......................................................................................................................... 343
Debug/syslog messaging............................................................................................................ 343
Hostname in syslog messages................................................................................................... 344
Logging origin-id...............................................................................................................344
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