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Cisco IOU High CPU Usuage
Posted on 2016-08-12
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
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
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6 Comments
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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,.
interface loopback0
service-policy output ARP-limit
Most likely you need to restrict traffic from loopback in out direction,.
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
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
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