Cisco iOS upgradation

Unanswered Question
Sep 9th, 2008
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1> I have cisco 4000 router, Version 11.2(16).Router is going ver slow.There is no ACLs,not any routing protocls,only statis routes are there.What can be the cause??Every time there is high %age of IP Input process.

2> I want to upgrade its IOS.From where I can download the there need of registered users of cisco to download IOS.

Please tell me.



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