networking - Windows 7 network connections
2014-07
Scott Larimer
I am having an extreme problem with my network adapter. I recently discovered that my onboard ethernet adapter was somehow incompatible with Windows 7 Ultimate x64.
Yesterday, I got a brand new wired network card. After installing it in the PCI-E 1x slot I started my computer up.
I checked my network, and as I was expecting to see a "Connected to Network" message. I got a message in my connections that I was connected, but it was to "Unidentified Network" with "No Internet Access." I rebooted, just to get a "No connections Available" message in my connections box.
In the Network and Sharing Center I had a message saying to plug in an ethernet cable. Obviously, I had already done this. I tried with another cable, even directly connecting it to the cable modem itself (I originally had it connected to port 1 on a Cisco Valet.)
I even tried resetting the "TCP/IP" stack, also to no avail. After letting the computer down for a while, I booted back into Windows 7, and what do you know, "Unidentified Network, No Internet Access." After tinkering around some more, like setting the IP up, it went back to "Network cable unplugged."
I am now not knowing what to do. I also tried other things like:
Restarting
Switching Cables
Disabling and Re-Enabling
Updating Drivers (all were up to date!)
All to no avail. Thank you for all of your answers, and I would be glad to provide more information, Scott
P.S. I am only 12, so please do not get mad if there is an obvious answer!
UPDATE:
I've removed all image links, but here's the Cmd for netstat -rn on the Laptop which works:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\NCS Customer>netstat -rn
===========================================================================
Interface List
43...3e 4b d6 f8 3f 9e ......Microsoft Virtual WiFi Miniport Adapter
42...1c 4b d6 0f 92 d7 ......Bluetooth Device (Personal Area Network) #10
40...70 71 bc 4f 95 ca ......Atheros AR8131 PCI-E Gigabit Ethernet Controller #
9
11...1c 4b d6 f8 3f 9e ......Atheros AR9285 Wireless Network Adapter
44...7a 79 05 f1 49 1e ......Hamachi Network Interface
1...........................Software Loopback Interface 1
49...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
48...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #4
14...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
50...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
51...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #5
61...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 5.0.0.1 5.241.73.30 9256
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.136 25
5.0.0.0 255.0.0.0 On-link 5.241.73.30 9256
5.241.73.30 255.255.255.255 On-link 5.241.73.30 9256
5.255.255.255 255.255.255.255 On-link 5.241.73.30 9256
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.136 281
192.168.1.136 255.255.255.255 On-link 192.168.1.136 281
192.168.1.255 255.255.255.255 On-link 192.168.1.136 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 5.241.73.30 9256
224.0.0.0 240.0.0.0 On-link 192.168.1.136 281
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 5.241.73.30 9256
255.255.255.255 255.255.255.255 On-link 192.168.1.136 281
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
0.0.0.0 0.0.0.0 5.0.0.1 Default
===========================================================================
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
14 58 2001::/32 On-link
14 306 2001:0:4137:9e76:14d7:3516:3f57:fe77/128
On-link
44 276 2620:9b::/96 On-link
44 276 2620:9b::5f1:491e/128 On-link
44 276 fe80::/64 On-link
11 281 fe80::/64 On-link
14 306 fe80::/64 On-link
14 306 fe80::14d7:3516:3f57:fe77/128
On-link
11 281 fe80::4cf9:7e9b:e70d:857f/128
On-link
44 276 fe80::504a:2f89:a560:9715/128
On-link
1 306 ff00::/8 On-link
14 306 ff00::/8 On-link
44 276 ff00::/8 On-link
11 281 ff00::/8 On-link
===========================================================================
Persistent Routes:
If Metric Network Destination Gateway
0 4294967295 2620:9b::/96 On-link
===========================================================================
C:\Users\NCS Customer>
This is the arp -a command on the laptop:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\NCS Customer>netstat -rn
===========================================================================
Interface List
43...3e 4b d6 f8 3f 9e ......Microsoft Virtual WiFi Miniport Adapter
42...1c 4b d6 0f 92 d7 ......Bluetooth Device (Personal Area Network) #10
40...70 71 bc 4f 95 ca ......Atheros AR8131 PCI-E Gigabit Ethernet Controller #
9
11...1c 4b d6 f8 3f 9e ......Atheros AR9285 Wireless Network Adapter
44...7a 79 05 f1 49 1e ......Hamachi Network Interface
1...........................Software Loopback Interface 1
49...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
48...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #4
14...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
50...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
51...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #5
61...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 5.0.0.1 5.241.73.30 9256
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.136 25
5.0.0.0 255.0.0.0 On-link 5.241.73.30 9256
5.241.73.30 255.255.255.255 On-link 5.241.73.30 9256
5.255.255.255 255.255.255.255 On-link 5.241.73.30 9256
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.136 281
192.168.1.136 255.255.255.255 On-link 192.168.1.136 281
192.168.1.255 255.255.255.255 On-link 192.168.1.136 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 5.241.73.30 9256
224.0.0.0 240.0.0.0 On-link 192.168.1.136 281
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 5.241.73.30 9256
255.255.255.255 255.255.255.255 On-link 192.168.1.136 281
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
0.0.0.0 0.0.0.0 5.0.0.1 Default
===========================================================================
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
14 58 2001::/32 On-link
14 306 2001:0:4137:9e76:14d7:3516:3f57:fe77/128
On-link
44 276 2620:9b::/96 On-link
44 276 2620:9b::5f1:491e/128 On-link
44 276 fe80::/64 On-link
11 281 fe80::/64 On-link
14 306 fe80::/64 On-link
14 306 fe80::14d7:3516:3f57:fe77/128
On-link
11 281 fe80::4cf9:7e9b:e70d:857f/128
On-link
44 276 fe80::504a:2f89:a560:9715/128
On-link
1 306 ff00::/8 On-link
14 306 ff00::/8 On-link
44 276 ff00::/8 On-link
11 281 ff00::/8 On-link
===========================================================================
Persistent Routes:
If Metric Network Destination Gateway
0 4294967295 2620:9b::/96 On-link
===========================================================================
C:\Users\NCS Customer>
This is the non working desktop for natstat -rn:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Windows\system32>netstat -rn
===========================================================================
Interface List
11...00 a1 b0 00 02 14 ......VIA Velocity-Family Gigabit Ethernet Adapter
1...........................Software Loopback Interface 1
12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
0.0.0.0 0.0.0.0 192.168.1.1 Default
===========================================================================
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
1 306 ff00::/8 On-link
===========================================================================
Persistent Routes:
None
C:\Windows\system32>
Now here is the desktop with the arp -a command:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Windows\system32>netstat -rn
===========================================================================
Interface List
11...00 a1 b0 00 02 14 ......VIA Velocity-Family Gigabit Ethernet Adapter
1...........................Software Loopback Interface 1
12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
0.0.0.0 0.0.0.0 192.168.1.1 Default
===========================================================================
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
1 306 ff00::/8 On-link
===========================================================================
Persistent Routes:
None
C:\Windows\system32>
And for arp -a it comes back with an err saying no ARP entries found.
Thanks for all the help!
abrahab
Seems, your provider (or modem) have settings that allow internet access only from allowed network cards. As usually, provider limits the access by MAC address of network card. If so, you must edit modem setting and add new card MAC address to allowing list or provide you new MAC address to internet provider.
flpgdt
The core of this questions I suppose is "How to I tell Windows 7 which interface to use for each network?"
My current set up is:
1) 10/100 cable connected to my corporate network, which is behind a tight firewall, but gives access to servers and stuff.
2) a USB 3G modem that once connected gives me access to all the internet goodness :)
It just happens that when I hit the connect on the 3G modem, Windows seems to try to use it for all the addresses and I loose access to LAN server (event though the cable is still connected).
I reckon there should be a way I could configure my Windows something of the sort "for networks 10.x.y.z use this interface, all the other use modem"
Can anyone tell me how do I do that?
[EDIT]
Adding the route print as per request:
===========================================================================
Interface List
53...00 Firefox 10 aa aa aa ......Juniper Network Connect Virtual Adapter
71...........................Internet Everywhere Pro
47...54 aa 9f aa aa aa ......Check Point Virtual Network Adapter For SSL Network Extender
49...00 a0 c6 aa aa aa ......ZTE Wireless Ethernet Adapter
28...00 22 fa aa aa aa ......Microsoft Virtual WiFi Miniport Adapter #3
27...00 22 fa aa aa aa ......Intel(R) WiFi Link 5100 AGN #2
22...00 24 7e aa aa aa ......Intel(R) 82567LM GBabit Network Connection
1...........................Software Loopback Interface 1
46...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
40...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
43...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3
44...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
21...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #5
45...00 00 00 00 00 00 00 e0 Microsoft 6to4 Adapter
51...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #4
52...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #6
54...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #7
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.113.148.1 10.113.148.71 4245
0.0.0.0 0.0.0.0 On-link 90.172.28.92 31
10.113.148.0 255.255.255.0 On-link 10.113.148.71 4501
10.113.148.71 255.255.255.255 On-link 10.113.148.71 4501
10.113.148.255 255.255.255.255 On-link 10.113.148.71 4501
90.172.28.92 255.255.255.255 On-link 90.172.28.92 286
127.0.0.0 255.0.0.0 On-link 127.0.0.1 4531
127.0.0.1 255.255.255.255 On-link 127.0.0.1 4531
127.255.255.255 255.255.255.255 On-link 127.0.0.1 4531
224.0.0.0 240.0.0.0 On-link 127.0.0.1 4531
224.0.0.0 240.0.0.0 On-link 10.113.148.71 4500
224.0.0.0 240.0.0.0 On-link 90.172.28.92 31
255.255.255.255 255.255.255.255 On-link 127.0.0.1 4531
255.255.255.255 255.255.255.255 On-link 10.113.148.71 4501
255.255.255.255 255.255.255.255 On-link 90.172.28.92 286
===========================================================================
Persistent Routes:
None
Brian
if all of your company is on a 10.113.x.x network, add another route, for 10.113.0.0 255.255.0.0 to go to your local gateway, 10.113.148.71. (often there are other subnets that are involved.
Basically, that route table is saying if its on your local lan subnet, 10.113.148.x, use your lan card. the default routes are there for both, (the 0.0.0.0, which means "unknown"), but the 3g card has a MUCH lower priority.
That will work you just have to add all the routes you might need to access to the table to route out your lan card. (for example, maybe your mail server is on 10.113.149.1 or something). Basically, however big your companies subnet is.
Andee
Yep I can see the problem. You see the second line in the route table? that basically overrides all other connections, because it has such a small metric value.
On the local network connection in control panel, right-click -> properties -> select ipv4 click properties, click advanced. Somewhere there is a box to set the metric. Enter 1 in this box and see what happens. If this then bypasses your 3g dongle, we'll have to fix it by manually editing the routing table. I'll get you instructions as soon as I get near a windows PC (which may not be today, sorry)