DHCP Client Behavior - Microsoft Enterprise Networking Team - Site Home - TechNet Blogs

DHCP Client Behavior - Microsoft Enterprise Networking Team - Site Home - TechNet Blogs: "Thus, if we consider the first DISCOVER packet at 0 seconds, then 4 packets are sent out as:
0th second - 1st packet with 5 sec timeout
5th second - 2nd packet with 7 sec timeout
12th sec: 3rd packet with 15 sec timeout
27th sec: 4th packet with 32 sec timeout

The above 4 packets with a final timeout of about 1 minute may be considered as a “set” for the purpose of this discussion.

In Windows Vista: One such set is sent out every 5 minutes as can be seen above. After one set, the DHCP client sleeps for 275 seconds or over 4.5 minutes."

TRACE:

DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:58:42.943 (SendDhcpMessage:dhcpmsg_c268)Sent message to 255.255.255.255:
DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:58:42.943 (ObtainInitialParameters:protocol_c2204)Sent DhcpDiscover Message.
DEBUG_TRACE [0]0430.0910::10/14/2008-20:58:42.943 (ObtainInitialParameters:protocol_c2212)Waiting for Offer: 5 seconds
DEBUG_TRACE [0]0430.0910::10/14/2008-20:58:42.943 (TryReceive:dhcpmsg_c471)Select: waiting for: 5 seconds

DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:58:47.304 (ObtainInitialParameters:protocol_c2222)Dhcp offer receive Timeout.

DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:58:47.304 (SendDhcpMessage:dhcpmsg_c268)Sent message to 255.255.255.255:
DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:58:47.304 (ObtainInitialParameters:protocol_c2204)Sent DhcpDiscover Message.
DEBUG_TRACE [0]0430.0910::10/14/2008-20:58:47.304 (ObtainInitialParameters:protocol_c2212)Waiting for Offer: 7 seconds
DEBUG_TRACE [0]0430.0910::10/14/2008-20:58:47.304 (TryReceive:dhcpmsg_c471)Select: waiting for: 7 seconds

DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:58:54.184 (ObtainInitialParameters:protocol_c2222)Dhcp offer receive Timeout.

DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:58:54.184 (SendDhcpMessage:dhcpmsg_c268)Sent message to 255.255.255.255:
DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:58:54.184 (ObtainInitialParameters:protocol_c2204)Sent DhcpDiscover Message.
DEBUG_TRACE [0]0430.0910::10/14/2008-20:58:54.184 (ObtainInitialParameters:protocol_c2212)Waiting for Offer: 15 seconds
DEBUG_TRACE [0]0430.0910::10/14/2008-20:58:54.184 (TryReceive:dhcpmsg_c471)Select: waiting for: 15 seconds

DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:59:09.815 (ObtainInitialParameters:protocol_c2222)Dhcp offer receive Timeout.

DEBUG_PROTOCOL [1]0430.0910::10/14/2008-20:59:09.815 (SendDhcpMessage:dhcpmsg_c268)Sent message to 255.255.255.255:
DEBUG_PROTOCOL [1]0430.0910::10/14/2008-20:59:09.815 (ObtainInitialParameters:protocol_c2204)Sent DhcpDiscover Message.
DEBUG_TRACE [1]0430.0910::10/14/2008-20:59:09.815 (ObtainInitialParameters:protocol_c2212)Waiting for Offer: 32 seconds
DEBUG_TRACE [1]0430.0910::10/14/2008-20:59:09.815 (TryReceive:dhcpmsg_c471)Select: waiting for: 32 seconds

EBUG_PROTOCOL [0]0430.0910::10/14/2008-20:59:41.243 (ObtainInitialParameters:protocol_c2222)Dhcp offer receive Timeout.

DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:59:41.243 (ObtainInitialParameters:protocol_c2510)121(ERROR_SEM_TIMEOUT)
DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:59:41.243 (DhcpSetRcvAllMode:protocol_c3941)RcvAll: 0
DEBUG_PROTOCOL [0]0430.0910::10/14/2008-20:59:41.243 (ReObtainInitialParameters:protocol_c3111)Autoconfiguring....
DEBUG_TRACE [0]0430.0910::10/14/2008-20:59:41.243 (ReObtainInitialParameters:protocol_c3153)Ready to acquire autonet address. Notifying NLA...

DEBUG_LEASE [0]0430.0910::10/14/2008-20:59:41.244 (ReObtainInitialParameters:protocol_c3191)Sleeping for 275 seconds.