cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
649
Views
0
Helpful
1
Replies

DHCP Reply Messages Dropped Notification

jack_ericson
Level 1
Level 1

I have a network with 9 switches, 3 of which are Cisco Express 500's. On those 3 switches I get a notification message once or twice a day stating: "Dynamic Host Configuration Protocol (DHCP) reply messages dropped for non-existing or disconnected devices on this interface." The recommended solution is: "Reconnect the device. Check if unauthorized device is connected to this network. Disconnect the unauthorized device." The interface is a PoE port that has a Cisco AP connected to it and is configured with the appropriate smartport setting. The device is not disconnected, and I am positive that no unauthorize devices are connected. This does not appear to cause any issues with functionality, but I would like to resolve the issue that is causing this message. Thanks in advance for any suggestions.

1 Reply 1

wdrootz
Level 4
Level 4

By default invalid message from relay agents are dropped so if you disabled that feature you will not get any notification messages for invalid messages.

http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_12c_ea1/configuration/guide/swdhcp82.html