Hi, We are running Cisco CNR 6.1.2 build #6.1.2.0501131448 and this has been very reliable for over 5 years, just recently in the last 4 weeks have began experiencing a problem where the DHCP server will stop issuing leases in response to discovers. A reload of the dhcp application fixes the problem.
In troubleshooting I see in the name_dhcp_1_log where during normal operation the log indicates that the request buffers have 2 or 3 in use at any one time. I will see a DHCP DISCOVER, or REQUEST come in and at the end of the entry it will show "3 in use" or "2 in use" and toggles between 2 and 3, then _something_ occurs and I begin to see the DISCOVER, and REQUEST entries will indicate that the buffers "in use" is incrementing... "4 in use" 5 in use" etc, until at some point the server will stop serving out leases in response to those DISCOVERS and REQUESTS. The request buffer size is set to 500 ( default) and the response buffer is set to 1000 ( default to twice the size of request buffer) and ultimately the log entries will indicate that the buffers in use will continue to increment until it reaches 500.
Again, this application has been running silently fo over 5 years without this issue, I dont know if some recent DHCP activity is causing this problem, or if it is some recent corruption to the CNR application, or a problem with the OS ( running solaris 8 )
Has anyone see anything similar, or have any ideas on what I might check?