On Oct 15, 2012, at 2:59 AM, Shahab Vahabzadeh wrote:

> I think it act like a warm or some attacks which cause high CPU load in some 
> IOS.

i.e., a DDoS attack.

You should configure iACLs at your edge so that random sources on the Internet 
can't packet your routers.  Hopefully, you have hardware-based edge devices, 
not just software-based devices and (awful) stateful firewalls - the days of 
software-based devices on the Internet were over years ago.

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Roland Dobbins <rdobb...@arbor.net> // <http://www.arbornetworks.com>

          Luck is the residue of opportunity and design.

                       -- John Milton


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