topic %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy in Switching

%ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Christoph Faber — Thu, 07 Mar 2019 22:36:38 GMT

I get this nice error on a switch once every hour.

Switch type is WS-C2960S-48-TD-L, Software version 15.0(2)SE4.

Any idea what it means or what I can do to fix it (cant't restart it now!)?

Google has no results.

Jul 26 03:01:00: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Jul 26 04:01:00: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Jul 26 05:01:00: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Jul 26 06:01:00: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Jul 26 07:01:01: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Jul 26 08:01:01: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Jul 26 09:01:01: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Jul 26 10:01:01: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Jul 26 11:01:01: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entrop

Jul 26 12:01:01: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entrop

Jul 26 13:01:02: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entrop

%ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Christoph Faber — Fri, 26 Jul 2013 12:03:57 GMT

The missing y in the last 3 lines is a copy and paste error. Sorry about that.

%ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Ivan Shirshin — Mon, 29 Jul 2013 12:40:21 GMT

Hi,

It seems to be a bug. Open a TAC case for DDTS # and SW recommendation.

Kind Regards,

Ivan

Bug still not fixed? Cisco

reinaga01 — Mon, 14 Jul 2014 08:03:25 GMT

Bug still not fixed?

Cisco IOS Software, C2960S Software (C2960S-UNIVERSALK9-M), Version 15.2(2)E, RELEASE SOFTWARE (fc3)

BOOTLDR: C2960S Boot Loader (C2960S-HBOOT-M) Version 12.2(55r)SE, RELEASE SOFTWARE (fc1)

System restarted at 19:01:46 CET Thu Jul 10 2014
System image file is "flash:/c2960s-universalk9-mz.152-2.E.bin"

Jul 13 18:03:55.942: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Jul 13 18:04:59.028: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Jul 13 18:06:02.119: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Jul 13 20:09:17.355: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Jul 13 20:10:20.441: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Jul 13 20:11:23.527: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Jul 13 22:14:38.793: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Jul 13 22:15:41.874: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Jul 13 22:16:44.959: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

I just got this problem after

dkjkj — Wed, 01 Oct 2014 02:14:41 GMT

I just got this problem after upgrading IOS on my switch. It appears after 1 hour.

Anybody know about a solutuion?

FYI: This is also happening

Philip Olsson — Tue, 11 Nov 2014 16:47:19 GMT

FYI: This is also happening on a WS-C3560CG-8TC-S with

System image file is "flash:/c3560c405ex-universalk9-mz.152-2.E/c3560c405ex-universalk9-mz.152-2.E.bin"

I'm getting the same, only

Jeff Udis — Wed, 12 Nov 2014 23:57:06 GMT

I'm getting the same, only happened once I enabled one of the 10gig links at full capacity. WS-C2960S-48TD-L V06 running 15.2.2(E) on 12.2(55r)SE bootloader.

Nov 12 14:54:40: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Nov 12 16:57:56: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Nov 12 16:58:59: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Nov 12 17:00:02: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Nov 12 19:03:17: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Nov 12 19:04:20: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

Nov 12 21:07:35: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Nov 12 21:08:39: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy
Nov 12 21:09:42: %ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy

I have SCOURED the internet for information on this, no luck... unfortunately service contract expired or I'd definitely open a TAC case. Anyone???

I've ran into this bug after

David Green — Thu, 10 Dec 2015 14:28:11 GMT

I've ran into this bug after trying to generate a 1024 bit RSA key on a 2960C after installing c2960c405-universalk9-tar.150-2.SE9.tar.

Has anybody found a fix yet?

We use this model when we

ropfi — Fri, 11 Dec 2015 08:58:45 GMT

We use this model when we have had these problems: WS-C2960S-48FPS-L

Current used IOS (without problems!):
c2960s-universalk9-mz.152-2.E1.bin

Used IOS durinng these errors/messages occured:
c2960s-universalk9-mz.152-2.E.bin

Probably it helps further...?!?

I ran into this exact issue

alloy45224 — Tue, 15 Dec 2015 14:00:57 GMT

I ran into this exact issue with c2960s-universalk9-mz.150-2.SE9.bin. Upgrading from this 15.0.2 image to 15.2.2E3 resolved the issue.

%ENTROPY-0-ENTROPY_ERROR:

Sergio118 — Sat, 11 Jun 2016 12:56:18 GMT

%ENTROPY-0-ENTROPY_ERROR: Unable to collect sufficient entropy on bootup

CSCum86316

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCum86316/?referring_site=bugquickviewredir

Re: FYI: This is also happening

bagas — Sat, 14 Dec 2019 14:40:28 GMT

yes, it hapening on 3750 also jkt-en-acs2-3750X-inp#sh ver Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 15.2(2)E, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2014 by Cisco Systems, Inc. Compiled Thu 26-Jun-14 11:52 by prod_rel_team