Solved: Use TFTP instead. Command:

Xavier RICOL · ‎08-18-2015

Hi,

We have a stack with 2 C2960S-48TS-L and 1 C2960S-24TS-L. Monday we upgraded the stack with the latest firmware 15.0(2)SE8-UNIVERSALK9.

Since then, 2 switches of the stack reboot twice or more by day. Without any action.

We upgraded another stack, with the same switches, and no reboot since the upgrade:

I find nothing in the events.

Could you please help us ?

Kind regards

Cedric

Leo Laohoo · ‎08-24-2015

The switch crashed to due excessive amount of MAC flapping. This is generally caused when the ports are not configured for EtherChannel.

If your company's most senior network engineer didn't work this out for himself, then you'd better get someone to manage the network properly.

View solution in original post

Leo Laohoo · ‎08-19-2015

I find nothing in the events.

Do NOT use CNA.

Remote into the stack and post the complete output to the following commands:

1. dir flash2:

2. dir flash3:

Xavier RICOL · ‎08-19-2015

Thanx for your answer.

I'm sorry i'm a newbie, my coworker who is certified is on holiday.

Do you mean to plug directly on one of the switch and type the command in hyperterminal, please ?

Cedric

Leo Laohoo · ‎08-19-2015

I'm sorry i'm a newbie, my coworker who is certified is on holiday.

If you want to learn Cisco, then now is the chance.

Do you mean to plug directly on one of the switch and type the command in hyperterminal, please ?

Yes. It's not rocket science. The outputs I'm looking for a "show" commands and are non-disruptive.

Xavier RICOL · ‎08-19-2015

I downloaded the USB To Serial Driver, installed it, i plugged the mini usb wire, i launched hyperterminal, i choose the right port (COM5), i changed the values (9600 baud, 8 data bits, no parity, 1 stop bit, and no flow control ). But the connection is refused? Do i need to restart the switch ?

I tried another port (COM1) which is the port on my motherboard, i can connect !! But i can't write anithing (logical).

Cedric

Xavier RICOL · ‎08-19-2015

Well, the C2960S-24TS-L reboot once again, but always impossible to connect to console.

shaps · ‎08-21-2015

if your struggling with console access perhaps you could try and log in via ssh/telnet from another device in the network

Xavier RICOL · ‎08-21-2015

Finally i succeeded, i post the results above.

Xavier RICOL · ‎08-21-2015

Hello,

I successed to connect, but i must wait, i have all the events that pass, since january !

Xavier RICOL · ‎08-21-2015

Finally i have the results of the 2 commands:

SW_DATAS_01#dir flash2:
Directory of flash2:/

2 -rwx 5886 Aug 17 2015 13:41:57 +02:00 config.text
3 -rwx 1916 Aug 17 2015 13:41:57 +02:00 private-config.text
4 -rwx 5683 Jul 16 2015 14:32:25 +02:00 config.text.backup
5 drwx 512 Aug 17 2015 12:57:31 +02:00 c2960s-universalk9-mz.122-
55.SE7
69 -rwx 1916 Jul 16 2015 14:32:25 +02:00 private-config.text.backup

70 -rwx 3096 Jan 2 2006 01:02:43 +01:00 multiple-fs
71 drwx 512 Aug 17 2015 13:10:52 +02:00 c2960s-universalk9-mz.150-
2.SE8
686 drwx 2560 Jan 2 2006 06:25:26 +01:00 crashinfo_ext
718 drwx 2560 Jan 2 2006 01:00:02 +01:00 crashinfo

57931776 bytes total (27382272 bytes free)
SW_DATAS_01#

SW_DATAS_01#dir flash3:
Directory of flash3:/

2 -rwx 5886 Aug 17 2015 13:41:57 +02:00 config.text
3 -rwx 1916 Aug 17 2015 13:41:57 +02:00 private-config.text
4 -rwx 5683 Jul 16 2015 14:32:25 +02:00 config.text.backup
5 drwx 512 Aug 17 2015 13:10:52 +02:00 c2960s-universalk9-mz.150-
2.SE8
620 -rwx 1916 Jul 16 2015 14:32:25 +02:00 private-config.text.backup

622 -rwx 3096 Jan 2 2006 01:02:43 +01:00 multiple-fs

57931776 bytes total (38411776 bytes free)
SW_DATAS_01#

Leo Laohoo · ‎08-21-2015

  686  drwx        2560   Jan 2 2006 06:25:26 +01:00  crashinfo_ext
  718  drwx        2560   Jan 2 2006 01:00:02 +01:00  crashinfo

Ok, the contents of these two sub-directories are what I'm interested in.

Post the complete output to the following commands:

1. dir flash2:crashinfo;

2. dir flash2:crashinfo_ext

I also would like to know if the stack's time and date settings are automatically configured for NTP or not, so I'd like to see the output to the command "sh clock".

Xavier RICOL · ‎08-22-2015

OK:

SW_DATAS_01#dir flash2:crashinfo
Directory of flash:/crashinfo/

722 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_1
723 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_2
724 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_3
725 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_4
726 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_5
727 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_6
728 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_7
729 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_8
730 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_9
731 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_10
732 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_11
733 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_12
734 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_13
735 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_14
736 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_15
737 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_16
738 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_17
739 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_18
740 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_19
741 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_20
742 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_21
743 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_22
744 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_23
745 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_24
746 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_25
747 -rwx 1403 Jan 2 2006 01:00:02 +01:00 crashinfo_26
748 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_27
749 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_28
750 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_29
751 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_30
752 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_31
753 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_32
754 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_33
755 -rwx 1448 Jan 2 2006 01:00:02 +01:00 crashinfo_34

57931776 bytes total (26366464 bytes free)
SW_DATAS_01#

Directory of flash:/crashinfo_ext/

687 -rwx 332329 Jan 2 2006 06:25:26 +01:00 crashinfo_ext_1
688 -rwx 336124 Jan 2 2006 10:20:55 +01:00 crashinfo_ext_2
689 -rwx 339999 Jan 2 2006 11:40:02 +01:00 crashinfo_ext_3
690 -rwx 335019 Jan 2 2006 14:11:06 +01:00 crashinfo_ext_4
691 -rwx 319895 Jan 2 2006 18:36:23 +01:00 crashinfo_ext_5
692 -rwx 332005 Jan 2 2006 23:03:11 +01:00 crashinfo_ext_6
693 -rwx 325194 Jan 3 2006 02:36:19 +01:00 crashinfo_ext_7
694 -rwx 341838 Jan 3 2006 06:24:23 +01:00 crashinfo_ext_8
695 -rwx 332264 Jan 3 2006 10:15:53 +01:00 crashinfo_ext_9
696 -rwx 328774 Jan 3 2006 11:39:27 +01:00 crashinfo_ext_10
697 -rwx 323528 Jan 3 2006 14:52:05 +01:00 crashinfo_ext_11
698 -rwx 350877 Jan 3 2006 16:28:41 +01:00 crashinfo_ext_12
699 -rwx 328691 Jan 3 2006 21:00:08 +01:00 crashinfo_ext_13
700 -rwx 325711 Jan 4 2006 02:26:35 +01:00 crashinfo_ext_14
701 -rwx 343188 Jan 4 2006 04:56:25 +01:00 crashinfo_ext_15
702 -rwx 337928 Jan 4 2006 10:24:53 +01:00 crashinfo_ext_16
703 -rwx 340325 Jan 4 2006 11:48:18 +01:00 crashinfo_ext_17
704 -rwx 314997 Jan 4 2006 14:01:54 +01:00 crashinfo_ext_18
705 -rwx 333465 Jan 4 2006 16:08:46 +01:00 crashinfo_ext_19
706 -rwx 342140 Jan 4 2006 20:58:22 +01:00 crashinfo_ext_20
707 -rwx 342101 Jan 4 2006 23:12:55 +01:00 crashinfo_ext_21
708 -rwx 328741 Jan 5 2006 05:13:47 +01:00 crashinfo_ext_22
709 -rwx 334087 Jan 5 2006 06:59:45 +01:00 crashinfo_ext_23
710 -rwx 331829 Jan 5 2006 11:12:43 +01:00 crashinfo_ext_24
711 -rwx 348358 Jan 5 2006 14:33:49 +01:00 crashinfo_ext_25
712 -rwx 240574 Jan 5 2006 18:54:57 +01:00 crashinfo_ext_26
713 -rwx 310949 Jan 5 2006 20:26:13 +01:00 crashinfo_ext_27
714 -rwx 308440 Jan 5 2006 23:30:02 +01:00 crashinfo_ext_28
715 -rwx 310202 Jan 6 2006 02:18:27 +01:00 crashinfo_ext_29
716 -rwx 307331 Jan 6 2006 06:11:51 +01:00 crashinfo_ext_30
717 -rwx 349210 Jan 6 2006 10:07:03 +01:00 crashinfo_ext_31
718 -rwx 330039 Jan 6 2006 11:17:33 +01:00 crashinfo_ext_32
719 -rwx 349547 Jan 6 2006 14:34:13 +01:00 crashinfo_ext_33
720 -rwx 320474 Jan 6 2006 19:39:19 +01:00 crashinfo_ext_34

57931776 bytes total (26366464 bytes free)
SW_DATAS_01#

It seems completely out of clock:

SW_DATAS_01#sh clock
*21:54:29.180 CET Fri Jan 6 2006
SW_DATAS_01#

Leo Laohoo · ‎08-22-2015

  718  -rwx      330039   Jan 6 2006 11:17:33 +01:00  crashinfo_ext_32
  719  -rwx      349547   Jan 6 2006 14:34:13 +01:00  crashinfo_ext_33
  720  -rwx      320474   Jan 6 2006 19:39:19 +01:00  crashinfo_ext_34

Ok, can you attach the three files into this thread? I want to see them.

Xavier RICOL · ‎08-22-2015

Could you please help me a little to do it?

I have a ftp server, with administrateur as username.

I tried to use the command ip ftp username to add the username, but invalid input detected.

Leo Laohoo · ‎08-22-2015

Use TFTP instead.

Command: copy flash:/crashinfo_ext/crashinfo_ext_32 tftp://<TFTP IP address>/crashinfo_ext_32

[Solved] Catalyst C2960s reboot