Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Control Plan Policy effecting IPSEC Traffic?

Hello all,

For the past few days I have been watching IPSEC ESP authentication failures on my firewall. The firewall sits behind a Cisco 7200 router which is configured with a UDP control plan policy (below) - DOS protection. The IOS running on the router is Version 12.4(25b). The VPN continues to pass traffic without any problems though. I have a feeling the policy is effecting IPSEC traffic. I'm still doing research. Has anyone witnessed this issue before?

I cleared the UDP ACL counter to see if the counter was incrementing at an abnormal rate. At the moment it is not. How can I reset the control-plane policy counter?

class-map match-all UDP
match access-group name UDP

policy-map Control-Plane
class UDP
police 16000 conform-action transmit  exceed-action drop  violate-action drop

ip access-list extended UDP
permit udp any any

control-plane
service-policy input Control-Plane

Thx

ad^2

1 REPLY
Cisco Employee

Re: Control Plan Policy effecting IPSEC Traffic?

Hi,

If the tunnel end-point is the FW and not the 7200 then CoPP will not impact your IPSec traffic. CoPP watches only traffic punted to the CPU which is most of the time control-plane traffic destinated to the router itself.

HTH

Laurent.

435
Views
0
Helpful
1
Replies