WS-C4510R failed to boot after power outage

[Ruslan.D98995]

We faced a problem with power on Catalyst 4510R switch - after power outage it failed to boot. The swicth has two PSUs PWR-C45-2800AC installed, both of them was without any indication after power outage. It powered on only when we switched PSUs off/on manualy, and then the switch started to boot.

Could anyone help with this behaviour? Does PSU have any protetction of voltage spikes or somthing like that? Is it normal behaviour?

[balaji.bandi]

We need to look at the logs and crash logs if any ?  Look at the Load of PSU ? is this N+1 ? or redundant ? is the both PSU same size ?

what is the version of the code ? what is power status of PSU ?

[Ruslan.D98995]

There are no logs or crashinfo, PSUs are in redundant mode, right now everything seems fine:

Power Fan Inline
Supply Model No Type Status Sensor Status
------ ---------------- --------- ----------- ------- -------
PS1 PWR-C45-2800AC AC 2800W good good good
PS2 PWR-C45-2800AC AC 2800W good good good

Power supplies needed by system : 1
Power supplies currently available : 2

Power Summary Maximum
(in Watts) Used Available
---------------------- ---- ---------
System Power (12V) 500 1360
Inline Power (-50V) 17 1400
Backplane Power (3.3V) 40 40
---------------------- ---- ---------
Total 557 2800

[balaji.bandi]

strange can you post show version.

[Ruslan.D98995]

Here is:

Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-ENTSERVICESK9-M), Version 15.0(2)SG10, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Tue 07-Apr-15 09:46 by prod_rel_team
Image text-base: 0x10000000, data-base: 0x123AE824

ROM: 12.2(20r)EW1
Dagobah Revision 226, Swamp Revision 34

xxxxxx uptime is 2 days, 1 hour, 32 minutes
Uptime for this control processor is 2 days, 1 hour, 32 minutes
System returned to ROM by power-on
System restarted at 14:35:05 URAL Wed May 26 2021
System image file is "bootflash:cat4500-entservicesk9-mz.150-2.SG10.bin"

cisco WS-C4510R (MPC8245) processor (revision 4) with 524288K bytes of memory.

MPC8245 CPU at 400Mhz, Supervisor V
Last reset from PowerUp
33 Virtual Ethernet interfaces
80 Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.

Configuration register is 0x2102

[marce1000]

 - Instability in the outage-syndrome may result in such behavior, have a console connected at all times , if you expect these troublesome times to happen again, in those cases only console output can tell what is going on, if possible have it logged by an  tty-operator tool such as putty which can log and keep sessions.

 M.

[Ruslan.D98995]

Thank you for suggestion, will try it.

Can the switch logs such type of event? I mean it looks like purely PSU behaviour.

[marce1000]

                >....Can the switch logs such type of event? I mean it looks like purely PSU behavior.

 Not really in those peculiar circumstances you are dependent on the console for info's , however using a syslog server may be advisable at all times, 'surrounding logs' can then also be examine and or may give further insights

 M.

[Leo Laohoo]

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@Ruslan.D98995 wrote:

It powered on only when we switched PSUs off/on manualy, and then the switch started to boot.

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Single event upset