3500XL low on memory try again later

Tried to putty into switch
Gave message "Low on memory try again later"
Known issue?  Best long term fix?
wildersteinAsked:
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Istvan KalmarHead of IT Security Division Commented:
In this situation, you can try a reboot, but I'm not hopefull that it will resolve your issue. Than again, if will be happen next time please upgrade the flasj to newer IOS
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Don JohnstonInstructorCommented:
Are you trying to access the switch via telnet or the console connection? If you're trying to telnet, use a console connection and please post the IOS version that you're running.
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Jan SpringerCommented:
If you can get in via the console:

  sho proc cpu sorted
  sho users
  sho mem
  dir /all
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mikebernhardtCommented:
I am almost certain you need to upgrade the version of IOS you have in the switch. A reboot would most certainly fix it for now, but it could be your configuration is hitting some sort of bug. I have never in all of my years seen a message like that on a fixed configuration switch.
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Jan SpringerCommented:
It apparently happens on all sorts of cisco devices.  It could be a memory leak related to a software bug which is why a reboot would take care of it for a while.

If logging is enabled to a remote syslog server, the log data may show the reason for the failure.

Can you get in via console to look at the log data, memory and processes?

How long since the switch was last booted and the time that you started seeing this message?
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wildersteinAuthor Commented:
I can't get in by console because of the error.
Will need to reboot, right now in the middle of fundraising, so can't run the risk.  Will have to wait until Monday am.
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wildersteinAuthor Commented:
Rebooted.
Working but error now:
SW_VLAN-4-BAD_VLAN_TIMER_ACTIVE_VALUE

So I'm looking at updating the IOS.  This is an old switch: 3500XL version 12.0(5.3)WC(1)
I have not yet update an IOS, so bear with me please.
The migration path seems to point to 12.0(5)WC7 as the last /maintenance release.
Can I go straight from (5.3)WC(1) to WC7?
**What IOS image should I use and where is it?**      
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mikebernhardtCommented:
You have to get it from Cisco or some other party. They don't give it away. The last is actually WC17, not WC7. But assuming you get yourself a copy, you can update straight to it.

You might want to clear the vlan database to see if that error goes away. Do this on the console from enable mode:
vlan database
 no vlan [whatever vlan number]
exit
vlan database
 vlan [same number you just deleted]
exit
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Jan SpringerCommented:
It takes an active Smartnet contract to obtain free downloads for IOS.  The exception to Cisco's rule is that it typically provides, at no cost, upgrades that are made available due to security vulnerabilities.

If you do not have Smartnet and can find security vulnerabilities with your current IOS, you may be able to open a trouble ticket with TAC for an upgrade.
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