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Cisco Bug: CSCun22639 - ip source guard with mac-check prevents DHCP

Last Modified

Sep 01, 2020

Products (1)

  • Cisco Catalyst 3850 Series Switches

Known Affected Releases

15.0(1)EZ

Description (partial)

Symptom:
The DHCP table is not getting populated when a new host is plugged into the port if the command "ip verify source mac-check" is enabled , the DHCP request from that host are being blocked and therefore the host does never receive an ip address.

Conditions:
3850 
ip verify source mac-check is configured on the ports connecting to hosts
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