Cisco IOU High CPU Usuage

Hello Experts,

I use Cisco IOU provided by flyxy.cn at http://91sec.blogspot.co.uk/2014/03/my-cisco-iou-racks-from-flyxj-iouv3.html

The Cisco L2 IOU 12 causes a lot of CPU usage causes high CPU usage. The high CPU usage is System not Users: more debugging shows that L2 IOU causes a lot of loopback traffic. It was suggested to use the following commands:

class-map match-all ARP
  match protocol arp

policy-map ARP-limit
  class ARP
   police rate 2 pps burst 20 packets peak-rate 7 pps
     conform-action transmit
     exceed-action drop
     violate-action drop

http://www.routereflector.com/2012/09/l2-iou-high-cpu-usage/

However, I don't see where to apply to policy. Can someone shed some light

Cheers

cpatte7372
LVL 1
Member_2_7966113Asked:
Who is Participating?

Improve company productivity with a Business Account.Sign Up

x
Advertise Here
 
Predrag JovicConnect With a Mentor Network EngineerCommented:
Most likely you should apply it on loopback interface (since it is loopback traffic)  :)

interface loopback0
service-policy output ARP-limit

Most likely you need to restrict traffic from loopback in out direction,.
0
 
Steven RomanCommented:
Hello

This is still going to use processing to try to limited the traffic

Try to determine why this is going on.  ARP could be MAC address flooding on your IOU Lab.

If that does not show any thing try GNS3 or Cisoc VIRL

Hope this helps.

Thanks
0
 
Member_2_7966113Author Commented:
Hello Steven

Does Cisco VIRL do switching?

Regards
0
Building an Effective Phishing Protection Program

Join Director of Product Management Todd OBoyle on April 26th as he covers the key elements of a phishing protection program. Whether you’re an old hat at phishing education or considering starting a program -- we'll discuss critical components that should be in any program.

Register Today!
 
Predrag JovicNetwork EngineerCommented:
Yes, but you need to pay for it. Check prices on Virl page.
0
 
Member_2_7966113Author Commented:
Hi Steven,

I've just checked out Cisco VIRL, its not for me.

Cheers
0
 
Member_2_7966113Author Commented:
Thanks for responding. That solved the problem
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.