Troubleshooting guide

xi
Contents
Preface i
Safety Information [AX6700S] xv
Safety Information [AX6600S] xxvii
Safety Information [AX6300S] xxxix
Safety Information [AX3800S] [AX3600S] [AX2400S] li
1. Overview 1
1.1 Overview of analyzing failures ................................................................................................2
1.2 Overview of analyzing failures of all or part of the Switch ....................................................3
1.2.1 Failure analysis for AX6700S, AX6600S, and AX6300S series switches ..................3
1.2.2 Failure analysis for AX3800S, AX3600S, and AX2400S series switches ..................5
1.3 Overview of analyzing failures of functionality ....................................................................10
2. Troubleshooting Switch Failures 15
2.1 Troubleshooting faults for AX6700S, AX6600S, and AX6300S series switches .................16
2.1.1 Procedure for handling switch faults ..........................................................................16
2.1.2 Replacing the switch and optional modules ...............................................................18
2.2 Troubleshooting faults for AX3800S, AX3600S, and AX2400S series switches .................19
2.2.1 Procedure for handling switch faults ..........................................................................19
2.2.2 Isolating the cause of external redundant power unit failures ....................................20
2.2.3 Replacing the switch and optional modules ...............................................................21
3. Troubleshooting Functional Failures During Operation 23
3.1 Problems related to login passwords .....................................................................................24
3.1.1 Forgotten login user password ...................................................................................24
3.1.2 Forgotten password for administrator mode ..............................................................24
3.2 Memory card problems ..........................................................................................................25
3.2.1 The "show system" or "show mc" command displays "MC : --------" .......................25
3.2.2 "MC not found." is displayed when the memory card is accessed .............................25
3.3 Operation terminal problems .................................................................................................26
3.3.1 Information cannot be entered from the console or does not appear correctly ..........26
3.3.2 Login from a remote terminal is not possible ............................................................27
3.3.3 Returning to administrator mode from configuration command mode is not possible
................................................................................................................................28
3.3.4 Login authentication using RADIUS/TACACS+ is not possible ..............................29
3.3.5 Command authorization using RADIUS/TACACS+ and local is not possible .........30
3.4 Stack configuration problems ................................................................................................31
3.4.1 Stack configuration is not possible .............................................................................31
3.4.2 Stack configuration cannot be edited .........................................................................32
3.4.3 Configuring a stack with a specific member switch as the master switch .................32
3.5 Network interface communication failures ...........................................................................33
3.5.1 Ethernet port cannot be connected .............................................................................33
3.5.2 BSU/PSP communication failures .............................................................................35
3.5.3 Actions to be taken for 10BASE-T/100BASE-TX/1000BASE-T problems .............36
3.5.4 Actions to be taken for 100BASE-FX/1000BASE-X problems ................................38
3.5.5 Actions to be taken for 10GBASE-R/40GBASE-R problems ...................................41