Intermittent Loss of Network Connection Vista

[Jeff]

Hi,

The last week or so I have been experiencing what appear to be random breaks
in communication with my network. I notice the problem primarily when
connected to the Internet.

I am connected to the Internet through and SMC Barricade G router. The
computer is hardwired Ethernet to the router. A second computer in my office
is also connected via Ethernet to the router.

The connection is lost for several minutes, and then it restores itself
automatically.

The Vista Event Viewer shows several events which may have initiated the
loss of communication. I am not sure which of these will be most helpful for
troubleshooting, so I will post what I believe are pertinent:

1. Event ID 27; Intel(R) PRO/1000 PM Network Connection Link has been
disconnected.
2. Event ID 2505; The server could not bind to the transport
\Device\NetBT_Tcpip_{737A72A7-5D80-4E6B-B2B4-1F599399F2E5} because another
computer on the network has the same name. The server could not start.
3. Event ID 4321; The name "NEWTECHFX530 :20" could not be registered on
the interface with IP address 0.0.0.0. The computer with the IP address
192.168.2.103 did not allow the name to be claimed by this computer.
4. Event ID 1003;Your computer was not able to renew its address from the
network (from the DHCP Server) for the Network Card with network address
0019D16D7512. The following error occurred:
The operation was canceled by the user.. Your computer will continue to try
and obtain an address on its own from the network address (DHCP) server.

Several of these events occur multiple times.

The following is the result of running ipconfig /all:

Microsoft(R) Windows DOS
(C)Copyright Microsoft Corp 1990-2001.

C:\USERS\JEFF>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : NewTechFX530
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 PM Network Connection
Physical Address. . . . . . . . . : 00-19-D1-6D-75-12
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::a489:a8fc:98da:bab7%8(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.103(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Saturday, April 26, 2008 7:01:52 AM
Lease Expires . . . . . . . . . . : Saturday, May 03, 2008 7:31:42 AM
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DHCPv6 IAID . . . . . . . . . . . : 201333201
DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 6:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . :
2001:0:4137:9e50:c09:1ae:3f57:fd98(Prefer
red)
Link-local IPv6 Address . . . . . : fe80::c09:1ae:3f57:fd98%9(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 7:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . :
isatap.{737A72A7-5D80-4E6B-B2B4-1F599399F
2E5}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 12:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . :
isatap.{737A72A7-5D80-4E6B-B2B4-1F599399F
2E5}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::5efe:192.168.2.103%11(Preferred)
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\USERS\JEFF>

Any help with this would be appreciated.

Thanks

Jeff

 

[Robert L. \(MS-MVP\)]

Could please you check the DHCP to make sure no duplicate IP and name?

--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com

 

[Jeff]

Hi Robert,

Thanks for your reply.

I know this will sound like a stupid question; but, how do I check the DHCP
to make sure there are no duplicate IP addresses or names?

Thanks,

Jeff

 

[Robert L. \(MS-MVP\)]

Assuming you use SMC Barricade G router as DHCP server, you need to access
it using web utility.

--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com

 

[Jeff]

Hi Robert,

Thanks for your response.

I checked the DHCP Client Log.... There are three computers on the network.
Each has a unique IP address, a unique MAC address, and a unique name.

Jeff