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This is the output from an attempt to ping from a Windows 7 computer with an LTE modem plugged in.

The LED on the device tells me that the device has a data (IP) connection, but the Windows network adapter is not connected, and internet access is not possible.

Can anyone with more Ping or IP experience than me tell me what exactly the Ping result means? I am guessing that it means that the computer is able to reach another local node - what can I deduce from that?

ping 8.8.4.4
Pinging 8.8.4.4 with 32 bytes of data:
Reply from 10.80.21.54: Destination host unreachable
Ping statistics for 8.8.4.4:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss)
Control-C
^C

This is the output from ipconfig for the network adapter:

Mobile Broadband adapter Mobile Broadband Connection 2:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix  . :
Description . . . . . . . . . . . : Mobile Broadband Network Adapter (Huawei)
Physical Address. . . . . . . . . : 00-1E-10-1F-7F-B6
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
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2 Answers 2

up vote 1 down vote accepted

It means that the device on 10.80.21.54 doesn't know where to send the packets for 8.8.4.4

If that is the IP of your PC check if you have default gateway configured to a correct IP address.

Is your LTE modem a usb stick, or is a device with a LAN port or WiFi you are connected to.

Does your PC netowrk card have the 10.80.21.54 address, do an ipconfig /all and paste it here.

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Thanks Alen. I added the output from ipconfig above - there is no IP address shown. –  S List Nov 30 '12 at 13:47
    
There is also no IP address shown for any other network adapter, as they are all not connected. Could this IP address be the next node in the mobile network? –  S List Nov 30 '12 at 13:49
    
do ipconfig /all, it is possible that it is the static ip on you LAN card –  Alen Nov 30 '12 at 13:50
    
I did do ipconfig /all, don't want to post it all here, as I have clearly not mastered the art of laying it out properly...but there was no static IP address configured for the LAN card (or anywhere else). It occurred to me that this IP address might be the modem, although I have previously understood that the IP connection should end on the computer, and the modem shouldn't have its own IP address. –  S List Nov 30 '12 at 13:54
    
The modem is a usb stick with a connection to the LTE network. It makes an IP connection automatically when you plug the stick in, but you don't get internet access, and I'm trying to figure out why. –  S List Nov 30 '12 at 13:56

It's possible your wireless router is not allowing communication between clients. It's common for wireless routers to deny communication between hosts that are connected to it via the WLAN interface. Some wireless routers have options in their setup program to allow/deny communication between clients. Thats what I would check first.

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It is a connection over the mobile network though, not WLAN. Thanks. –  S List Nov 30 '12 at 13:48

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