Comments on: Cisco – Config Archive Variables

By: raymond jacob

raymond jacob — Wed, 07 Oct 2009 17:04:08 +0000

question: if the path is scp://help.me:hopeless/running.config

Is there anyway to set encryption level so the
password will not be in the clear?

thank you

By: Rene

Rene — Mon, 31 Aug 2009 03:04:42 +0000

Thanks for writing this great blog I really enjoyed.

By: dazamaz

dazamaz — Fri, 23 Jan 2009 00:39:45 +0000

Josh,

while perusing though the cisco bugs to try and find something that better reflected what happened (in my post 2 above that bug wasn’t exactly our problem, my post above has the closest cisco bug) I did see the scp bug you mentioned, however didn’t think much of it as we are not using scp, just straight out tftp.

Thanks for letting me know though

By: dazamaz

dazamaz — Fri, 23 Jan 2009 00:36:12 +0000

Extremely bad bug with the “kron” command!!!!

When using kron in conjunction with its ‘at’ command the service hogs the cpu, and in some cases reboots the router, constantly!

This is Cisco’s bug that explains the problem best:
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm99079
However they only label it as a severity 2 case, when in actual fact its much worse then this!

By: Josh

Josh — Tue, 06 Jan 2009 02:53:54 +0000

dazamaz,

One of the guys in our office found something very similar to this! His problem was a bug having something to do with scp copies and kron.

Very strange and very random! Thanks for the information!

Josh

By: dazamaz

dazamaz — Sun, 04 Jan 2009 23:49:43 +0000

Something that is very interesting about particular IOS versions and running kron…

Arrived back in the office this morning after 2 weeks holidays and found out that there had been a bug in some IOS versions causes by kron running at/near the end of the calender year. I do not have the full details as of yet but from what I have been told so far this crashed our BGP routers and completely brought down our WAN!!!
The reason why this brought down our remote office BGP routers was because they got stuck in a loop after the BGP routers in our DC crashed.

We had Dimension Data (our support guys) help us on this one. Here is what they said:

the issue was caused by an IOS bug. Cisco Bug ID: CSCsm20994
The details of the bug can be found in the following URL:
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm25847

I am unable to view this link as I only have a cisco guest account, however am still researching

By: dazamaz

dazamaz — Tue, 14 Oct 2008 14:07:44 +0000

could possibly be as paul suggested, maybe it is not liking the colons…
I will do some testing as well and get back to you guys

By: Josh

Josh — Mon, 13 Oct 2008 18:39:14 +0000

dazamaz,

I don’t have any issues if I specify a name only when I try the time variable.

Josh

By: dazamaz

dazamaz — Mon, 13 Oct 2008 18:33:04 +0000

What if you manually gave the archive a name (something that doesn’t have special characters)? Do you get the same problem?

By: Paul McDonnell

Paul McDonnell — Wed, 01 Oct 2008 19:38:21 +0000

Hi Darren,

thanks for the response. That is the exact filename on the filesystem using “dir”. The “OS” in question is the cisco IOS itself – I am saving to a local flash disk on the router. The config archives successfully (I see the ‘!’), but whatever way the code is written, the “sh archive config diff” command doesn’t like the filename, while “configure replace” can deal with it. I suspect the colons are what’s upsetting it…