You have to configure...

!-ACL defining ICMP-

access-list ICMP line 10 extended permit icmp any any

!-Class Map referencing ACL-

class-map match-all ICMP-INSPECT-L4CLASS

description ICMP fixup - L4 Class

2 match access-list ICMP

!-LB Policy which is applied on your client side vlan.

!-Add the class statement and switch on imcp inspection

policy-map multi-match L4-SLB-POLICY

class ICMP-INSPECT-L4CLASS

inspect icmp error

!-Client Side VLAN-

!-Apply the service police otherwise use your existing policy-

interface vlan 3104

service-policy input L4-SLB-POLICY

Hope it helps

Roble

Hmmm, funny thing. I had the same problem. Looked every where to find a solution, and then came here before opening a TAC. Going to try out the solution given above in a couple of days after the weekend. AW, thanks a lot for sharing the experience.

Any idea why the ACE modify the source ip of the "TTL expired in transit" packets when traversing through it ????

has anyone else had this problem ? I would like to find out the reason behind this

I tried this solution but it didn't work. Then i issued a "show access-list ICMP"

and the ACE says that the status of the ICMP access-list is "not active"

Attached is my config. Can some one help me debug this pls

Din

I know you first dealt with this years ago but I have just experienced it for the first time with an ACE30 running 5.2.1 code.  Your solution fixed the issue but I am curious if you ever discovered why it is happening.  I am working with Cisco currently but they have failed to provide a reasonable explanantion as to why this happens with the ACE module.

Thanks

Tony