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
interface loopback0
service-policy output ARP-limit
Most likely you need to restrict traffic from loopback in out direction,.