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DHCP Server on Cisco Catalyst 3560 trunked to Cisco Catalyst Express 500 dropping DHCP Replies on 500

Posted on 2010-01-06
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DHCP Server on Cisco Catalyst 3560 trunked to Cisco Catalyst Express 500 dropping DHCP Replies on 500
Cisco Catalyst 3560 serving up DHCP is trunked to Cisco Catalyst Express 500.
The CE500 is dropping DHCP replies on the trunked interface and therefor not serving DHCP devices connected to CE500.

Error on CE500 is; "Port Gi1: Dynamic Host Configuration Protocol (DHCP) reply messages dropped for non-existing or disconnected devices on this interface."

Port Gi1 on CE 500 is setup via Smartport to be Cisco Switch (via macro I assume)

Port GigabitEthernet0/3 on the 3560 is setup as follows;

interface GigabitEthernet0/3
 description Express 500
 switchport trunk encapsulation dot1q
 switchport mode trunk
 macro description cisco-switch
 power inline never
 auto qos voip trust
 spanning-tree link-type point-to-point


Need to Serve DHCP from 3560 to CE500
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Question by:scsnj
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