Re: Re: 6500 Switch error

Ok..I've got some experience with the problem. I was a High Touch Engineer
at an SP. 6500's have a thing called chunk memory manager. The 6500
allocates memory in 64k byte chunks. Now if a process occupies a part of
that 64k, chunk memory manager once it completes it work it does not free
the entire block. That memory is stored in an area called dead memory. Which
is not actually dead and can be reused again. Now depending on what version
of code and the memory of the SUP card, when this condition occurs it can
effect SHOW RUN, AAA processes....etc. Normally, the way out of the problem
is to restart the box or flip over the SUP which I saw posted before. Lastly
you can upgrade the SUP's to RSP720 which I believe handles up to 2G of
memory. If you have large BGP tables with umpteen number of prefixes when
BGP scanner or event processor kicks in it can rail the CPU. Just my two
cents......

On Tue, Feb 8, 2011 at 1:44 PM, Hammer <bhmccie_at_gmail.com> wrote:

> A week? Uhhh.... Never heard of that. Good luck with TAC.
>
>
> --Hammer--
>
>
> On Tue, Feb 8, 2011 at 1:01 AM, <nouran_at_skynet.be> wrote:
>
> > unfortunately its not few seconds!!its since one week now.i cant clear
> vty
> > sessions ,no show run,no show startup-config
> > anyway the switch it self is working and we already open ticket with
> Cisco.
> >
> > thanks
> >
> >
> >
> >
> > ------------------------------
> >
> > It might well be another process locking access to running-config, say
> > archiving or something along those lines. Anyways, this being unavailable
> > for some seconds doesn't hurt much. :-)A.On 2/8/2011 11:55 AM, -Hammer-
> > wrote:> Hey, just to clarify, I am not implying your CPU is pegged. I
> have
> > seen it> occasionally on our 6509s. Even with less that 15% CPU. Usually
> > when it> happens it's just a matter of timing. A routing process will be
> > updating> just at the exact moment you type your command. Or maybe there
> are
> > multiple> VTYs or an SNMP call being made and so your request is just
> > deferred. That's> all.>> If anyone has had different experiences speak up
> > please.>>> > -Hammer-> > "I was a normal American nerd."> -Jack Herer> >
> >>>
> > -----Original Message-----> From: -Hammer- [mailto:bhmccie_at_gmail.com]>
> > Sent: Monday, February 07, 2011 6:43 PM> To: 'Alexei Monastyrnyi';
> 'hanan'>
> > Cc: 'Shahid Ansari'; 'Radioactive Frog'; 'Shaughn Smith';> '
> > ccielab_at_groupstudy.com'> Subject: RE: 6500 Switch error>> Usually that
> > just means the CPU is busy at that particular moment. Don't you> know
> 6500s
> > do NOT have errors? :)>>> > -Hammer-> > "I was a normal American nerd.">
> > -Jack Herer> > >> -----Original Message-----> From:
> nobody_at_groupstudy.com[mailto:
> > nobody_at_groupstudy.com] On Behalf Of> Alexei Monastyrnyi> Sent: Saturday,
> > February 05, 2011 5:14 AM> To: hanan> Cc: 'Shahid Ansari'; 'Radioactive
> > Frog'; 'Shaughn Smith';> ccielab_at_groupstudy.com> Subject: Re: 6500
> Switch
> > error>> saw that a few times on 4900Ms and more seldom on 6509Es, never
> got
> > a> chance to dig deeper...>> A.>> On 2/4/2011 2:46 AM, hanan wrote:>>
> > sorry>>>> Unable to read configuration, try again later>>>>>>>>
> > Regards>>>>>>>>>>>> From: Shahid Ansari [mailto:shahid1357_at_gmail.com]>>
> > Sent: 03 February 2011 14:38>> To: Radioactive Frog>> Cc: Shaughn Smith;
> > nouran_at_skynet.be; ccielab_at_groupstudy.com>> Subject: Re: 6500 Switch
> > error>>>>>>>> Unable to read or unable to get>>>> Thanks>> Shahid
> Ansari>>>>
> > On Thu, Feb 3, 2011 at 4:25 PM, Radioactive Frog>> wrote:>>>> try using a
> > console cable...>>>>>> On Thu, Feb 3, 2011 at 11:50 PM, Shaughn Smith>
> > wrote:>>> SOunds like a memory or session issue.>>>>>> Check available
> > memory and how many sessions are open>>>>>>>>> CCIE # 23962 (SP)>>>>>> On
> > Thu, Feb 3, 2011 at 2:18 PM, wrote:>>>>>>> hi>>>> could you please
> help>>>>
> > i get error (unable to get configue, try again later) when i do show
> run>>>
> > on>>>> 6500 Switch,it was working fine since few days.>>>> any help to
> fix
> > it?>>>> thanks>>>>>>>> regards>>>>>>>>>>>> Blogs and organic groups at
> > http://www.ccie.net>>>>>>>>
> >
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Received on Tue Feb 08 2011 - 15:48:47 ART