I have an issue with DHCP at one of my work's locations. DHCP has stopped working. No one at that location can get DHCP addresses. If I assign them a static address all is well, but DHCP will not get them an address.
My DHCP is served from my Cisco ASA 5510. DHCP is running and I find no errors in the log. A total of three requests have been denied in the 104 days the system has been online. Monitoring this I can see that DHCPDISCOVERs are coming in and DHCPOFFERs are going out - however no DHCPREQUESTs are coming in and no DHCPACKs are going out.
Nothing change on our network today. The only recent change was a week or so ago we added a fiber optic connection between two buildings at this site and someone mentioned spanning tree....
Could the spanning tree have anything to do with this? If so, why didn't this happen back when it was implemented?
Please help!! Any assistance would be appreciated.