%IP-3-LOOPPAK: Looping packet detected and dropped

Unanswered Question
Aug 5th, 2010
User Badges:


I am getting an error msg on my core (3750) IPB through the CNA repeated.

X-Mailer: Cisco Network Assistant System Messages Notification Mailer


005773: *Mar  8 05:19:54: %IP-3-LOOPPAK: Looping packet detected and dropped


Can anyone suggest me what should i do to resolve the problem.

Thanks and Regards

Saurav Tripathy

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
vragotha Thu, 08/05/2010 - 01:36
User Badges:
  • Silver, 250 points or more


     This error is usually seen when you have the ip helper address incorrectly. Make sure that you have the address of the dhcp server configured correctly and not the ip address of the local device itself.

k_srinadh Thu, 08/05/2010 - 02:21
User Badges:


     There is some misconfiguration of an IP helper address. The helper address should be the same address as that of the server of the intended service. Putting the address of the router in the helper address causes a routing loop to be created.

You have to verify that the configuration of the IP helper addresses in the router correctly that points to the right device and does not point to the local router itself.

hope this helps




This Discussion