Re: Supervisor Failed Over to Standby

Mano11 · ‎01-07-2018

Hi Guys,

We have a Cisco WS-C4500X-16 switch with a 2 Supervisors, one of the active supervisor has failed over and there are no relevant logs indicating why it failover to the standby. I have capture the following logs below. Currently, the standby supervisor is running as the active one.

Would it be possible if someone could advise what has caused the failover to happen? There are no crash file generated.

HS-C4500-01#show module
Switch Number: 1 Role: Virtual Switch Standby

Chassis Type : WS-C4500X-16

Power consumed by backplane : 0 Watts

Mod Ports Card Type Model Serial No.
---+-----+--------------------------------------+------------------+-----------
1 16 4500X-16 10GE (SFP+) WS-C4500X-16 JAE165206G0

M MAC addresses Hw Fw Sw Status
--+--------------------------------+---+------------+----------------+---------
1 e02f.6d43.8c18 to e02f.6d43.8c27 1.0 15.0(1r)SG7 03.04.00.SG Ok

Mod Redundancy role Operating mode Redundancy status
----+-------------------+-------------------+----------------------------------
1 Standby Supervisor SSO Standby hot

Switch Number: 2 Role: Virtual Switch Active

Chassis Type : WS-C4500X-16

Power consumed by backplane : 0 Watts

Mod Ports Card Type Model Serial No.
---+-----+--------------------------------------+------------------+-----------
1 16 4500X-16 10GE (SFP+) WS-C4500X-16 JAE170100W5

M MAC addresses Hw Fw Sw Status
--+--------------------------------+---+------------+----------------+---------
1 e02f.6d43.a200 to e02f.6d43.a20f 1.0 15.0(1r)SG7 03.04.00.SG Ok

Mod Redundancy role Operating mode Redundancy status
----+-------------------+-------------------+----------------------------------
1 Active Supervisor SSO Active

HS-C4500-01#show redundancy
Redundant System Information :

------------------------------
       Available system uptime = 1 year, 33 weeks, 7 hours, 0 minute
Switchovers system experienced = 1
              Standby failures = 0
        Last switchover reason = active unit removed

                 Hardware Mode = Duplex
    Configured Redundancy Mode = Stateful Switchover
     Operating Redundancy Mode = Stateful Switchover
              Maintenance Mode = Disabled
                Communications = Up

Current Processor Information :
------------------------------
               Active Location = slot 2/1
        Current Software state = ACTIVE
       Uptime in current state = 1 year, 9 weeks, 2 days, 9 hours, 4 minutes
                 Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.04.00.SG RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Wed 05-Dec-12 04:38 by prod
               BOOT = bootflash:/cat4500e-universalk9.SPA.03.04.00.SG.151-2.SG.bin,12;bootflash:/cat4500e-universal.SPA.03.03.01.SG.151-1.SG1.bin,12;
        Configuration register = 0x2102

Peer Processor Information :
------------------------------
              Standby Location = slot 1/1
        Current Software state = STANDBY HOT
       Uptime in current state = 3 hours, 38 minutes
                 Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.04.00.SG RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Wed 05-Dec-12 04:38 by pro
               BOOT = bootflash:/cat4500e-universalk9.SPA.03.04.00.SG.151-2.SG.bin,12;bootflash:/cat4500e-universal.SPA.03.03.01.SG.151-1.SG1.bin,12;
        Configuration register = 0x2102

HS-C4500-01#dir
Directory of bootflash:/

16163 -rw-     2460468 Feb 22 2013 09:09:27 +11:00 cat4500-e-ios-promupgrade-150-1r-SG7
16164 -rw-   123162032 Feb 22 2013 09:15:55 +11:00 cat4500e-universalk9.SPA.03.04.00.SG.151-2.SG.bin
16165 -rw-        1717 Feb 25 2013 06:33:48 +11:00 pre-vss.cfg
16166 -rw-        4816 Feb 25 2013 09:12:25 +11:00 startup-config.converted_vs-20130224-221221
16162 -rwx   112652444 Jan 14 2013 18:57:33 +11:00 cat4500e-universal.SPA.03.03.01.SG.151-1.SG1.bi

1692037120 bytes total (1453334528 bytes free)

014331: *Jan 7 13:31:14.674 ADST: %C4K_REDUNDANCY-4-KEEPALIVE_WARNING: STANDBY:Keepalive messages from peer Supervisor are missing for 27 seconds
014332: *Jan 7 13:31:17.912 ADST: %VSLP-3-VSLP_LMP_FAIL_REASON: STANDBY:Te2/1/16: Link down
014333: *Jan 7 13:31:17.912 ADST: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: STANDBY:Lmp HW session DOWN on slot 11 port 16.
014334: *Jan 7 13:31:17.941 ADST: %VSLP-3-VSLP_LMP_FAIL_REASON: STANDBY:Te2/1/15: Link down
014335: *Jan 7 13:31:17.941 ADST: %VSLP-2-VSL_DOWN: STANDBY: All VSL links went down while switch is in Standby role

014336: *Jan 7 13:31:17.941 ADST: %EC-5-UNBUNDLE: STANDBY:Interface TenGigabitEthernet2/1/15 left the port-channel Port-channel62
014337: *Jan 7 13:31:17.943 ADST: %EC-5-UNBUNDLE: STANDBY:Interface TenGigabitEthernet2/1/16 left the port-channel Port-channel62
014338: *Jan 7 13:31:17.980 ADST: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: STANDBY:Lmp HW session DOWN on slot 11 port 15.
014339: *Jan 7 13:31:17.982 ADST: %C4K_REDUNDANCY-6-INIT: Initializing as ACTIVE supervisor
014340: *Jan 7 13:31:18.018 ADST: %C4K_REDUNDANCY-3-COMMUNICATION: Communication with the peer Supervisor has been lost
014341: *Jan 7 13:31:18.105 ADST: %C4K_REDUNDANCY-3-SIMPLEX_MODE: The peer Supervisor has been lost
014342: *Jan 7 13:31:18.131 ADST: %EC-5-UNBUNDLE: Interface Te1/1/3 left the port-channel Po21
014343: *Jan 7 13:31:18.132 ADST: %EC-5-UNBUNDLE: Interface Te1/1/4 left the port-channel Po41
014344: *Jan 7 13:31:18.134 ADST: %EC-5-UNBUNDLE: Interface Te1/1/11 left the port-channel Po31
014345: *Jan 7 13:31:18.135 ADST: %EC-5-UNBUNDLE: Interface Te1/1/12 left the port-channel Po32
014346: *Jan 7 13:31:18.137 ADST: %EC-5-UNBUNDLE: Interface TenGigabitEthernet1/1/15 left the port-channel Port-channel61
014347: *Jan 7 13:31:18.142 ADST: %EC-5-UNBUNDLE: Interface TenGigabitEthernet1/1/16 left the port-channel Port-channel61
014348: *Jan 7 13:31:21.943 ADST: %BGP-5-ADJCHANGE: neighbor 172.20.192.227 Up
014349: *Jan 7 13:31:48.107 ADST: %TRACKING-5-STATE: 101 ip sla 1 reachability Down->Up
014350: *Jan 7 13:35:27.713 ADST: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: Lmp HW session UP on slot 11 port 15.
014351: *Jan 7 13:35:27.821 ADST: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: Lmp HW session UP on slot 11 port 16.
014352: *Jan 7 13:35:43.710 ADST: %VSLP-5-VSL_UP: Ready for control traffic

014353: *Jan 7 13:35:48.712 ADST: %VSLP-5-RRP_ROLE_RESOLVED: Role resolved as ACTIVE by VSLP
014354: *Jan 7 13:35:48.712 ADST: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/15 joined port-channel Port-channel62
014355: *Jan 7 13:35:48.723 ADST: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/16 joined port-channel Port-channel62
014356: *Jan 7 13:35:49.514 ADST: %C4K_REDUNDANCY-6-DUPLEX_MODE: The peer Supervisor has been detected
014357: *Jan 7 13:36:26.156 ADST: %C4K_REDUNDANCY-6-MODE: ACTIVE supervisor initializing for sso mode
014358: *Jan 7 13:36:26.547 ADST: %C4K_REDUNDANCY-3-COMMUNICATION: Communication with the peer Supervisor has been established
014359: *Jan 7 13:36:37.112 ADST: %C4K_REDUNDANCY-5-CONFIGSYNC: The bootvar has been successfully synchronized to the standby supervisor
014360: *Jan 7 13:36:37.113 ADST: %C4K_REDUNDANCY-5-CONFIGSYNC: The config-reg has been successfully synchronized to the standby supervisor
014361: *Jan 7 13:36:37.114 ADST: %C4K_REDUNDANCY-5-CALENDAR: The calendar has been successfully synchronized to the standby supervisor for the first time
014362: *Jan 7 13:36:37.114 ADST: %C4K_REDUNDANCY-5-CONFIGSYNC: The startup-config has been successfully synchronized to the standby supervisor
014363: *Jan 7 13:36:37.671 ADST: %C4K_REDUNDANCY-5-CONFIGSYNC: The private-config has been successfully synchronized to the standby supervisor
014364: *Jan 7 13:36:38.678 ADST: %C4K_REDUNDANCY-5-CONFIGSYNC_RATELIMIT: The vlan database has been successfully synchronized to the standby supervisor
014365: *Jan 7 13:37:08.083 ADST: %EC-5-BUNDLE: Interface TenGigabitEthernet1/1/15 joined port-channel Port-channel61
014366: *Jan 7 13:37:08.160 ADST: %EC-5-BUNDLE: Interface TenGigabitEthernet1/1/16 joined port-channel Port-channel61
014367: *Jan 7 13:37:09.070 ADST: %EC-5-UNBUNDLE: Interface TenGigabitEthernet1/1/15 left the port-channel Port-channel61
014368: *Jan 7 13:37:09.079 ADST: %EC-5-UNBUNDLE: Interface TenGigabitEthernet1/1/16 left the port-channel Port-channel61
014369: *Jan 7 13:37:10.075 ADST: %EC-5-BUNDLE: Interface TenGigabitEthernet1/1/15 joined port-channel Port-channel61
014370: *Jan 7 13:37:10.100 ADST: %EC-5-BUNDLE: Interface TenGigabitEthernet1/1/16 joined port-channel Port-channel61
014371: *Jan 7 13:37:10.188 ADST: %HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded
014372: *Jan 7 13:37:10.220 ADST: %RF-5-RF_TERMINAL_STATE: Terminal state reached for (SSO)
014373: 000029: *Jan 7 13:37:09.615 ADST: %EC-5-BUNDLE: STANDBY:Interface TenGigabitEthernet1/1/15 joined port-channel Port-channel61
014374: 000030: *Jan 7 13:37:09.705 ADST: %EC-5-BUNDLE: STANDBY:Interface TenGigabitEthernet1/1/16 joined port-channel Port-channel61
014375: *Jan 7 13:37:59.066 ADST: %C4K_IOSINTF-5-TRANSCEIVERINSERTED: Slot=1 Port=2: Transceiver has been inserted
014376: *Jan 7 13:38:00.066 ADST: %C4K_IOSINTF-5-TRANSCEIVERINSERTED: Slot=1 Port=3: Transceiver has been inserted
014377: 000031: *Jan 7 13:38:01.005 ADST: %C4K_TRANSCEIVERMAN-3-INCOMPATIBLE: STANDBY:Port Te1/1/4: New transceiver (speed 0Mbps) is incompatible with this module
014378: *Jan 7 13:38:03.081 ADST: %C4K_IOSINTF-5-TRANSCEIVERINSERTED: Slot=1 Port=9: Transceiver has been inserted
014379: *Jan 7 13:38:05.066 ADST: %C4K_IOSINTF-5-TRANSCEIVERINSERTED: Slot=1 Port=10: Transceiver has been inserted
014380: *Jan 7 13:38:07.066 ADST: %C4K_IOSINTF-5-TRANSCEIVERINSERTED: Slot=1 Port=11: Transceiver has been inserted
014381: *Jan 7 13:38:09.825 ADST: %EC-5-BUNDLE: Interface Te1/1/3 joined port-channel Po21
014382: *Jan 7 13:38:10.076 ADST: %C4K_IOSINTF-5-TRANSCEIVERINSERTED: Slot=1 Port=12: Transceiver has been inserted
014383: *Jan 7 13:38:11.071 ADST: %C4K_IOSINTF-5-TRANSCEIVERINSERTED: Slot=1 Port=14: Transceiver has been inserted
014384: 000032: *Jan 7 13:38:13.227 ADST: %EC-5-BUNDLE: STANDBY:Interface Te1/1/3 joined port-channel Po21
014385: 000033: *Jan 7 13:38:14.546 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/9: Rx power low alarm; Operating value: -36.9 dBm, Threshold value: -13.9 dBm.
014386: 000034: *Jan 7 13:38:15.545 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/10: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm.
014387: *Jan 7 13:38:16.830 ADST: %EC-5-BUNDLE: Interface Te1/1/11 joined port-channel Po31
014388: 000035: *Jan 7 13:38:17.220 ADST: %EC-5-BUNDLE: STANDBY:Interface Te1/1/11 joined port-channel Po31
014389: *Jan 7 13:38:18.778 ADST: %EC-5-BUNDLE: Interface Te1/1/12 joined port-channel Po32
014390: *Jan 7 13:38:19.591 ADST: %EC-5-BUNDLE: Interface Te1/1/4 joined port-channel Po41
014391: 000036: *Jan 7 13:38:19.090 ADST: %EC-5-BUNDLE: STANDBY:Interface Te1/1/12 joined port-channel Po32
014392: 000037: *Jan 7 13:38:19.794 ADST: %EC-5-BUNDLE: STANDBY:Interface Te1/1/4 joined port-channel Po41
014393: *Jan 7 13:38:52.627 ADST: %BGP-5-ADJCHANGE: neighbor 172.20.192.226 Up
014394: 000038: *Jan 7 13:48:14.644 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/9: Rx power low alarm; Operating value: -35.2 dBm, Threshold value: -13.9 dBm.
014395: 000039: *Jan 7 13:48:15.644 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/10: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm.
014396: 000040: *Jan 7 13:58:14.730 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/9: Rx power low alarm; Operating value: -36.9 dBm, Threshold value: -13.9 dBm.
014397: 000041: *Jan 7 13:58:15.730 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/10: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm.
014398: 000042: *Jan 7 14:08:14.842 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/9: Rx power low alarm; Operating value: -35.2 dBm, Threshold value: -13.9 dBm.
014399: 000043: *Jan 7 14:08:15.842 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/10: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm.
014400: 000044: *Jan 7 14:18:14.938 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/9: Rx power low alarm; Operating value: -33.0 dBm, Threshold value: -13.9 dBm.
014401: 000045: *Jan 7 14:18:15.938 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/10: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm.
014402: 000046: *Jan 7 14:28:15.030 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/9: Rx power low alarm; Operating value: -36.9 dBm, Threshold value: -13.9 dBm.
014403: 000047: *Jan 7 14:28:16.028 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/10: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm.
014404: 000048: *Jan 7 14:38:15.142 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/9: Rx power low alarm; Operating value: -35.2 dBm, Threshold value: -13.9 dBm.
014405: 000049: *Jan 7 14:38:16.142 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/10: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm.
014406: 000050: *Jan 7 14:48:15.238 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/9: Rx power low alarm; Operating value: -35.2 dBm, Threshold value: -13.9 dBm.
014407: 000051: *Jan 7 14:48:16.238 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/10: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm.
014408: 000052: *Jan 7 14:58:15.334 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/9: Rx power low alarm; Operating value: -35.2 dBm, Threshold value: -13.9 dBm.
014409: 000053: *Jan 7 14:58:16.334 ADST: %SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te1/1/10: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm.

educruz · ‎01-07-2018

Good day,

From the output below, it looks like one Supervisor Engine could not listen to the other:

014331: *Jan  7 13:31:14.674 ADST: %C4K_REDUNDANCY-4-KEEPALIVE_WARNING: STANDBY:Keepalive messages from peer Supervisor are missing for 27 seconds

However, there may be several reasons as to why that could happen.

Can you provide the output of "show platform crashdump" please? That can provide more information.

Hope this helps.

Eduardo.

Mano11 · ‎01-07-2018

Hi Educruz,

Thanks for your comment.

I'm afraid there is no crashdumps.

HS-C4500-01#show platform crashdump
Last Power Failure: 05/21/2016 09:12:00

No crash data available.

Any other suggestion?

educruz · ‎01-07-2018

Understood, thank you for that information.

The approach I would follow would be:

Check in any monitoring tool if there were signs of some L2 instablity (interfaces with high input rate/low output rate), L1 issues in the VSL link (CRCs, input errors, etc.), or high CPU utilization in the switch.
Check if there were any recent changes by the time the issue occurred.
Check the output of "show platform slavekinfo"
Check if there are any other logs in your syslog server from a week ago up to this point.

On the other hand, software version "cat4500e-universalk9.SPA.03.04.00.SG.151-2.SG.bin" is one of the early releases and it is now deferred. One of the things to take into consideration is to upgrade the VSS to a newer IOS (an upgrade of the ROMmon system is needed too).

Hope this helps.

Eduardo.

Mano11 · ‎01-07-2018

Hi Educruz,

I got another question. Could it be related to this bug below?

Bug CSCui71792 : https://bst.cloudapps.cisco.com/bugsearch/bug/CSCui71792/?referring_site=bugquickviewredir

Logs for the switch :

HS-C4500-01#show pds tag 65544
PDS Tag properties

Tag              isActive         isDynamic        Tag name
------------------------------------------------------------------
65544            true             false

Currently Registered by:
Client           Name             PID
-------------------------------------------------
31793152         VSLTAP PDS c... 5021

Tag statistics
---------------------------------------
Total delivery attempts     : 65161506
Success delivery attempts   : 65161506
Fail delivery attempts      : 0
Total bytes delivered       : 1748223963
Total buffer delivered      : 65161506

educruz · ‎01-07-2018

This is very good information,

Unfortunately, the logic of the bug describes that the PDS channel must show failures under the "Fail delivery attempts" section, but in the output shown below from your switch, it says zero.

Tag statistics
---------------------------------------
Total delivery attempts     : 65161506
Success delivery attempts   : 65161506
Fail delivery attempts      : 0   <<<<<<<<<<<<<<<<<<<<
Total bytes delivered       : 1748223963
Total buffer delivered      : 65161506

Due to the software version, the cause would be most likely a bug, but we do not have enough information to confirm so.

The error message about Keepalives missed between Supervisor is very generic, that is why it would be important to collect some other information to get to the cause, but ultimately the highly recommended action to avoid this from happening again, is an IOS upgrade.

Kind regards,

Eduardo.

Leo Laohoo · ‎01-07-2018

@Mano11 wrote:

1 e02f.6d43.8c18 to e02f.6d43.8c27 1.0 15.0(1r)SG7 03.04.00.SG Ok

I think I got a good idea why. 3.4.0 is a very, very, very old IOS. I suspect the primary unit hit a memory/CPU bug and bounced.

The high uptime isn't of any help either.

My recommendation is to find time and upgrade the IOS. Try something in the 3.6.X train.

Mano11 · ‎01-07-2018

As requested, i have uploaded the logs into notepad and attached it to this post.

Initially there was multiple interfaces were down. Upon checking, we noticed that the active supervisor failed over. There are no high or low input and output rate on the interfaces. The interfaces are running fine. There are no CRC or input errors noticed on the interfaces. I have also checked on the CPU usage and there is no spikes noticed based from the history and utilization logs. At this point of time, there was no recent changes done.

I understand that you have mentioned that the IOS that is running on the switch is a deferred one. Since you have mentioned to perform an upgrade on the switch with the latest IOS, i will look into this further and will let you know. However, i need to understand why did the fail-over happened. Please see the attached logs.

Leo Laohoo · ‎01-07-2018

Please post the complete output to the command "dir slavecrashinfo:".

Mano11 · ‎01-07-2018

Hi Leo,

Below is the output from the switch :

HS-C4500-01#dir slavecrashinfo:
Directory of slavecrashinfo:/

10082 -rwx 727205 Aug 13 2014 10:40:35 +10:00 crashinfo_tshark_20140813-104034-UTC
10083 -rw- 44 Aug 27 2014 05:27:21 +10:00 last_crashinfo
10084 -rwx 726476 Aug 14 2014 05:25:26 +10:00 crashinfo_tshark_20140814-052525-UTC
10085 -rwx 732299 Aug 14 2014 06:20:04 +10:00 crashinfo_tshark_20140814-062003-UTC
10086 -rwx 733658 Aug 27 2014 04:37:40 +10:00 crashinfo_tshark_20140827-043739-UTC
10087 -rwx 735216 Aug 27 2014 04:38:57 +10:00 crashinfo_tshark_20140827-043856-UTC
10088 -rwx 735614 Aug 27 2014 04:47:54 +10:00 crashinfo_tshark_20140827-044753-UTC
10089 -rwx 733600 Aug 27 2014 04:48:27 +10:00 crashinfo_tshark_20140827-044826-UTC
10090 -rwx 736687 Aug 27 2014 04:56:01 +10:00 crashinfo_tshark_20140827-045600-UTC
10091 -rwx 2622424 Aug 27 2014 05:27:21 +10:00 crashinfo_iosd_20140827-052717-UTC

286718976 bytes total (276062208 bytes free)

Leo Laohoo · ‎01-07-2018

Hmmmm ... Can you also add "sh clock"?

Mano11 · ‎01-07-2018

Hi Leo,

Attached is the show clock result :

HS-C4500-01#dir slavecrashinfo:
Directory of slavecrashinfo:/

10082 -rwx 727205 Aug 13 2014 10:40:35 +10:00 crashinfo_tshark_20140813-104034-UTC
10083 -rw- 44 Aug 27 2014 05:27:21 +10:00 last_crashinfo
10084 -rwx 726476 Aug 14 2014 05:25:26 +10:00 crashinfo_tshark_20140814-052525-UTC
10085 -rwx 732299 Aug 14 2014 06:20:04 +10:00 crashinfo_tshark_20140814-062003-UTC
10086 -rwx 733658 Aug 27 2014 04:37:40 +10:00 crashinfo_tshark_20140827-043739-UTC
10087 -rwx 735216 Aug 27 2014 04:38:57 +10:00 crashinfo_tshark_20140827-043856-UTC
10088 -rwx 735614 Aug 27 2014 04:47:54 +10:00 crashinfo_tshark_20140827-044753-UTC
10089 -rwx 733600 Aug 27 2014 04:48:27 +10:00 crashinfo_tshark_20140827-044826-UTC
10090 -rwx 736687 Aug 27 2014 04:56:01 +10:00 crashinfo_tshark_20140827-045600-UTC
10091 -rwx 2622424 Aug 27 2014 05:27:21 +10:00 crashinfo_iosd_20140827-052717-UTC

286718976 bytes total (276062208 bytes free)
HS-C4500-01#show clock
*02:18:16.724 ADST Mon Jan 8 2018

Leo Laohoo · ‎01-07-2018

Oh great. Possible silent crash.

Leo Laohoo · ‎01-07-2018

Ok, another thing ...
Can someone please console into the standby appliance (not to be confused for the secondary appliance) and issue the command "sh version"?
Remember, the standby appliance is the ACTIVE unit until it rebooted/crashed.

Leo Laohoo · ‎01-07-2018

Question: Was someone logged into the switch immediately BEFORE the crash? If someone did, I'm suspecting it's CSCul00025.