A PC could get IP address, another couldn’t

Publication Date:  2012-09-13 Views:  261 Downloads:  0
Issue Description
Connect two PC with the same USG device, one of them could get ip address, another couldn’t. topology as bellow:

Review ip address of PC assigned by firewall already:
dis dhcp server ip-in-use   all
Global pool:
IP address     Hardware address    Lease expiration              Type
192.168.10.13  00e0-4ce2-f2ca      Dec 10 2011 13:38:18 PM       Auto:COMMITED

Interface pool:
IP address     Hardware address    Lease expiration              Type

13:59:57  12-09-2011
review DEBUGGING information of device:

*0.178689716 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: receive DHCPDISCOVER from BC30-5BE9-582D
*0.178689716 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServerFindFreeIP: start get ip from DHCP free ip
*0.178689716 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Sending ICMP ECHO to Target IP: 192.168.10.11
*0.178689716 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer:Assigned Free Lease
*0.178690216 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: ICMP Timeout
*0.178690216 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Still Need to ICMP detect for 1 times
*0.178690216 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Sending ICMP ECHO to Target IP: 192.168.10.11
*0.178690716 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: ICMP Timeout
*0.178690716 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: All Try finished
*0.178690716 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Send DHCPOFFER to MAC=> BC30-5BE9-582D Offer IP=> 192.168.10.11
*0.178693683 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: receive DHCPDISCOVER from BC30-5BE9-582D
*0.178693683 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer:Assigned Used Lease
*0.178701616 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: receive DHCPDISCOVER from BC30-5BE9-582D
*0.178701616 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Sending ICMP ECHO to Target IP: 192.168.10.11
*0.178701633 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer:Assigned Used Lease
*0.178701733 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: receive DHCPREQUEST from BC30-5BE9-582D
*0.178701733 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer:User Accept Other's Offer  ? //pc2 received other supplied address
review TCP/IP information of PC2:
C:\Documents and Settings\Administrator>ipconfig/all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : gglserver
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Unknown
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter local connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit Ethernet
   Physical Address. . . . . . . . . : BC-30-5B-E9-58-2D
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IP Address. . . . . . . . . . . . : 192.168.10.0    
   Subnet Mask . . . . . . . . . . . : 255.0.0.0
   Default Gateway . . . . . . . . . :
   DHCP Server . . . . . . . . . . . : 192.168.10.13  
   Lease Obtained. . . . . . . . . . : 2011-12-08 15:56:31
   Lease Expires . . . . . . . . . . : 2011-12-10 15:56:31

C:\Documents and Settings\Administrator>
Alarm Information
NULL
Handling Process
Pc2 could get ip address normally after disconnect pc1 with firewall.
[USG2110_F]
*0.180802400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: receive DHCPDISCOVER from BC30-5BE9-582D
*0.180802400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Sending ICMP ECHO to Target IP: 192.168.10.11
*0.180802400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer:Assigned Used Lease
*0.180802900 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: ICMP Timeout
*0.180802900 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Still Need to ICMP detect for 1 times
*0.180802900 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Sending ICMP ECHO to Target IP: 192.168.10.11
*0.180803400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: ICMP Timeout
*0.180803400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: All Try finished
*0.180803400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Send DHCPOFFER to MAC=> BC30-5BE9-582D Offer IP=> 192.168.10.11
*0.180803500 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: receive DHCPREQUEST from BC30-5BE9-582D
*0.180803500 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Ack User's Lease
*0.180803500 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Send DHCPACK to MAC=> BC30-5BE9-582D Offer IP=> 192.168.10.11   //confirm to supply ip address

[USG2110_F]dis dhcp server  ip-in-use al
Global pool:
IP address     Hardware address    Lease expiration              Type
192.168.10.11  bc30-5be9-582d      Dec 10 2011 14:33:39 PM       Auto:COMMITED
192.168.10.13  00e0-4ce2-f2ca      Dec 10 2011 14:29:49 PM       Auto:COMMITED

Interface pool:
IP address     Hardware address    Lease expiration              Type

14:33:56  12-09-2011
Pc2 could get ip address normally after disconnect pc1 with firewall.
[USG2110_F]
*0.180802400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: receive DHCPDISCOVER from BC30-5BE9-582D
*0.180802400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Sending ICMP ECHO to Target IP: 192.168.10.11
*0.180802400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer:Assigned Used Lease
*0.180802900 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: ICMP Timeout
*0.180802900 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Still Need to ICMP detect for 1 times
*0.180802900 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Sending ICMP ECHO to Target IP: 192.168.10.11
*0.180803400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: ICMP Timeout
*0.180803400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: All Try finished
*0.180803400 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Send DHCPOFFER to MAC=> BC30-5BE9-582D Offer IP=> 192.168.10.11
*0.180803500 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: receive DHCPREQUEST from BC30-5BE9-582D
*0.180803500 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Ack User's Lease
*0.180803500 USG2110_F DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Send DHCPACK to MAC=> BC30-5BE9-582D Offer IP=> 192.168.10.11   //confirm to supply ip address

[USG2110_F]dis dhcp server  ip-in-use al
Global pool:
IP address     Hardware address    Lease expiration              Type
192.168.10.11  bc30-5be9-582d      Dec 10 2011 14:33:39 PM       Auto:COMMITED
192.168.10.13  00e0-4ce2-f2ca      Dec 10 2011 14:29:49 PM       Auto:COMMITED

Interface pool:
IP address     Hardware address    Lease expiration              Type

14:33:56  12-09-2011
Root Cause
The ip address PC1 get is 192.168.10.0, DHCP server point to 192.168.10.13, PC1 enabled DHCP service leads to DHCP server point to that PC directly.
Suggestions
NULL

END