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Network down after changing from DSL to Cable

Posted on 2013-12-05
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Last Modified: 2013-12-24
Server runs SBS03 and about 15 computers running WinXP.  They were running smoothly before changed to cable lately.  Within the first week, the network was down twice.
Server has 2 network cards.  One connect to the cable modem, one to the hub.  the cable ISP gave me an IP static address, gateway, subnetmask, dns1, dns2 numbers.  when i tried to use CEICW on the server, the IP/Gateway/Subnet mask are grey out. so I just changed dns1 and dns2.  LAN is DHCP.
Did I miss something when changing the numbers?  how to fix it?
Thank you in advance.
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Question by:eidee
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10 Comments
 
LVL 25

Expert Comment

by:Lionel MM
ID: 39700649
Your server should have a static IP address. Do this by going to control panel, network connections and changing settings there. Are you hosting the static IP from the cable company on the Cable modem, or on your server?
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Author Comment

by:eidee
ID: 39706388
I tried to go to control panel but didn't see any to change the settings.
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LVL 25

Expert Comment

by:Lionel MM
ID: 39706412
Windows Server 2003--Control Panel, Network Connections, and you should see LAN connections there. Doubler click, then Properties, then double click Internet Properties. You should see the settings here to change IP address, gateway, DNS servers and more. Is your static IP from the cable company hosted on the cable modem, or a router, or on the server?
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Author Comment

by:eidee
ID: 39707003
I don't know.  How to find it out?
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Accepted Solution

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Lionel MM earned 500 total points
ID: 39708349
Go to a command prompt (Start, Run, type cmd and enter). At command prompt type
ipconfig /all >results.txt and post the results.txt file
I assume you know what the static IP is? Now type tracert static-IP-address example
tracert 65.69.123.67 whatever the cable company gave you and copy and paste the results here please. If you go to the LAN Connections I mentioned above and see what the IP address is for the server you can see if the server has that IP address or not. It is normally on the cable modem or the router. I recommend putting it on the router and using the cable modem as a bridge only.
0
 

Author Comment

by:eidee
ID: 39710102
Windows IP Configuration



   Host Name . . . . . . . . . . . . : SBS03

   Primary Dns Suffix  . . . . . . . : me.local

   Node Type . . . . . . . . . . . . : Unknown

   IP Routing Enabled. . . . . . . . : Yes

   WINS Proxy Enabled. . . . . . . . : Yes

   DNS Suffix Search List. . . . . . : me.local

                                       charterinternet.com



Ethernet adapter Network Connection:



   Connection-specific DNS Suffix  . : charterinternet.com

   Description . . . . . . . . . . . : Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client)

   Physical Address. . . . . . . . . : 00-1E-C9-DC-40-CB

   DHCP Enabled. . . . . . . . . . . : Yes

   Autoconfiguration Enabled . . . . : Yes

   IP Address. . . . . . . . . . . . : 192.168.44.4

   Subnet Mask . . . . . . . . . . . : 255.255.255.0

   Default Gateway . . . . . . . . . : 192.168.44.1

   DHCP Server . . . . . . . . . . . : 192.168.44.1

   DNS Servers . . . . . . . . . . . : 192.168.16.2

   NetBIOS over Tcpip. . . . . . . . : Disabled

   Lease Obtained. . . . . . . . . . : Sunday, December 08, 2013 8:17:28 PM

   Lease Expires . . . . . . . . . . : Sunday, December 15, 2013 8:17:28 PM



Ethernet adapter Server Local Area Connection:



   Connection-specific DNS Suffix  . :

   Description . . . . . . . . . . . : Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client) #2

   Physical Address. . . . . . . . . : 00-1E-C9-DC-40-CD

   DHCP Enabled. . . . . . . . . . . : No

   IP Address. . . . . . . . . . . . : 192.168.16.2

   Subnet Mask . . . . . . . . . . . : 255.255.255.0

   Default Gateway . . . . . . . . . :

   DNS Servers . . . . . . . . . . . : 192.168.16.2

   Primary WINS Server . . . . . . . : 192.168.16.2

--------------------------------------
Tracing route to 97-93-40-246.static.mtpk.ca.charter.com [97.93.40.246]

over a maximum of 30 hops:



  1    <1 ms    <1 ms     1 ms  192.168.44.1

  2  192.168.44.1  reports: Destination host unreachable.



Trace complete.
0
 
LVL 25

Expert Comment

by:Lionel MM
ID: 39710236
OK I only see one DNS server, and internal server 192.168.16.2 so that may be the problem--what about the secondary and third DNS servers, those provided to you by your cable company. It also seems that the static IP is on your cable modem, is the  Default Gateway . . . . . . . . . : 192.168.44.1 your cable modem? If so, please check the setting on the cable modem and check the IP setting there, the IP static address, gateway, subnetmask, dns1, dns2 numbers. Do you have a router or just a hub and a cable modem?
0
 

Author Comment

by:eidee
ID: 39722733
- the cable company gave me DNS1: 71.9.127.107 DNS2: 68.190.192.35
- I just have a cable modem (from the cable company) and a hub
- how to check the setting on the cable modem? it's Charter SMC Networks modem.

Thanks a lot.
0
 
LVL 25

Expert Comment

by:Lionel MM
ID: 39722800
Use internet explorer and type http://192.168.44.1 in the url and see if you can get into the modem.
0
 

Author Comment

by:eidee
ID: 39726979
No, I still can't get into the modem.
I've heard that Charter doesn't let their customers access to the modem.  Don't know why. but the main thing is that the problem keep happened everyweek and they said it must be something with the network settings even I didn't have that problem before when I was with another DSL provider.
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