Question about Arris SURFboard SBG900 (49402201900) Modem

2 Answers

No Internet Connection

I keep getting the error:

CAP unable to make C-NAPT mapping. No WAN IP address available,

Any suggestions on how to fix this problem would be appreciated. The modem is brand new.

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First check internet line is working properly,before connecting to the wireless modem

Posted on Jul 30, 2008

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  • 3 Answers

Get better quality digital  T spliters, better qualitly coax R5 cables, replace all your sppliters connectors, ask cable company to get a direct line to their Tap box and make sure there is at max only one spliter before your modem and that the cable comming from their tap box is not longer that the necesary. 
regards.
im very impresed nobody post anything to you all this tieme.

Posted on Apr 27, 2009

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1 Answer

Connect motorola modemsbSB6121 to Belink N600 wireless router with out losing internet signal


Step one turn on PC directly connected to ModemsbSB6121 without Wi FI router being involved.
Step two go to Command prompt type in ipconfig (press enter)
Step three note IP address of default gateway and ip address issued to P.C.
Step four type in default gateway address into browser and log into Modem.
Step five look for DHCP Server and allocate IP addresses from at least 50 for example 192.168.0.50 starting ip lease ending ip lease 192.168.0.254
Step six connect Wi Router to P.C. via ethernet cable only - remove ModemSB6121
Step Seven shutdown and restart p.c
Step Eight go to Command prompt type in ipconfig (press enter)
Step Nine note IP address of default gateway and ip address issued to P.C.
Step Ten type in default gateway address into browser and log into Wi Fi Router
Step Eleven Change IP address on Router to 2 as example 192.168.0.2. (it has to match in that modem device would have been 192,168.0.1)
(if it was 10.0.0.1 make wi fi 10.0.0.2 make sure subnet mask is the same like 255.255.255.0)
Step twelve Change DHCP Server to off
Step Thirteen may need to set default gateway to MODEM IP address for example 192.168.0.1
Step Fourteen plug modem router into Wi Fi router may need to plug into WAN port on WI FI router .
Step Fifteen shutdown and Restart Computer
Step Sixteen go to Command prompt type in ipconfig (press enter)
Step Seventeen type in PING 192.168.0.1 (if this is modem IP address and default gateway IP addess)
All this above is to avoid IP address conflicts or mismatching
Subnet mask should be 255.255.255.0
either it uses 192.168.0.1 or it uses 10.0.0.1 make sure Wi FI router is set to different address to Modem Router.
I suspect either a clash occurs or your P.C gets a different IP range from ther WI FI DHCP server.
Happy troubleshooting !














Sep 16, 2014 | Arris Sb6141 Surfboard Cable Modem Sb 6141...

1 Answer

7050 end life


I'm assuming that you have internet access available on every other device in the house. If not, it is most likely a problem with your router. I would suggest unplugging it for 30 seconds, the plugging it back in and re-starting the test.
If that doesn't work, you might have a device cap on your router, and therefore need to get into the router settings to change the device cap.

Feb 15, 2014 | Modems

2 Answers

I have a Motorola SURFboard SB5101 Cable Modem a Netgear mr814v2 wireless router, I obtain the ip address on router status but for some reason my internet communication losed. I verified the configuration...


Hi, follow the steps below to configure MR814 with your motorola surfboard:

CONNECTIONS:

1. Connect a Ethernet cable from the modem to the WAN port of the router (isolated port).
2. Connect the computer to the router using any one of the 4 available ports. Please make sure that there is no direct connection between the modem and the computer (either using Ethernet cable or USB cable).
3. Power off the modem and the router after making the connections.
4. Power on the modem and wait for the lights, then power on the router.
RECONFIGURE:
1. Open the browser (Internet Explorer, Mozilla Firefox or Safari).
2. Access the router, usually with http://192.168.0.1
3. Login to the router with the Username as "admin" and Password as "password" (please note that the Username and Password are case sensitive).
4. Click on 'Basic settings' from the left menu and select 'Use Computers MAC Address' from 'router MAC Address' section.
5. Click Apply.
6. Once it updates the settings then power off the modem and the router. Power on the modem and wait for the lights, then power on the router.

I hope this information allows you to resolve this issue.

If I have helped you, please help me, and rate this suggestion with the highest FixYa rating. If you cannot rate this post with the highest rating, then please comment to this post and I will try to help you further.

Regards
Anand

Jul 29, 2009 | Arris SURFboard SB5101 Cable Modem

1 Answer

Cant connect to xbox live need an ip address how do i get one


When the SurfBoard modem is powered up and connects to the internet on the WAN interface, it automatically gets an IP address from your ISP. When another machine is powered up and is connected to the modem via a USB cable, it is automatically using the WAN IP address to communicate with the world. If it is connected via the Ethernet connection, the modem automatically issues it its own IP address for use on the internal network via DHCP. The modem's internal Ethernet connection is 192.168.0.1. The next machine powered on will normally get an IP address of 192.168.0.2.

May 30, 2009 | Arris SURFboard® SB5101 Cable Modem

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Ps3 key change timeout using westell 6100 modem on verizon


there might be a problem with the Linksys router, the Westell 6100 should be 1st set to bridge mode in order for your router to be connected to it. or there could also be a proble on the Verizon server.

Apr 10, 2009 | Westell Wirespeed LiteLine 6110 Modem

3 Answers

Error in Connecting


without the modem plugged into the troubled computer, go to start -> run.

Type cmd and hit enter. A black window screen will come up. Type ipconfig and hit enter. Without the modem plugged in, your ip address should read 0.0.0.0. If not, you have a manual ip address and need to change it to auto.

To change ip address to auto, (in windows xp) go to start -> control panel, or start -> settings -> control panel.

Double click network connections. Look for your local area connection, right click and click on properties.

A window should popup. Scroll down the list to Internet Protocol and click properties again. Make sure IP address and DNS are both set to automatic.

Mar 18, 2009 | Arris SURFboard SB5120 Modem

1 Answer

Modem


Technical Specifications AAL and ATM Support
VCI 0-65535 address range
VPI 0-255 address range
AAL5 support
Bridging
IEEE 802.1.d Transparent Learning Bridge (dynamic learning of up to 255 addresses)
Spanning Tree support
Certifications
FCC Part 15, Class B
CE certification
Connectors
DSL interface: RJ-11 or RJ-45 (Europe)
Ethernet interface: RJ-45
USB Type B interface (5200, 5500 series)
Diagnostic LEDs
Power, DSL, Activity, Ethernet status; USB status (5200, 5500 series)
Management
Intuitive, Web-based GUI management access
SNMP support
Comprehensive hardware diagnostics
Media Interface
RJ-11 or RJ-45 (European) DSL WAN connection
10/100Base-T RJ-45 Ethernet LAN connection
USB Type B LAN connection (5200, 5500 series)
Power
12V power supply included, 700ma max. 5400/5500 - 12 VDC, 1000ma max.

Routing
DHCP server/DHCP client
Network Address Port Translation (NAPT)
Network Address Translation (NAT)
Packet filtering
RFC 2364 Point-to-Point Protocol over ATM PVCs (PPPoA)
RFC 2516 Point-to-Point Protocol over Ethernet (PPPoE)
RFC 2684 (formerly 1483) Bridged Ethernet and routed encapsulation Routing
Standards Compliance
IEEE 802.3
USB 1.1 T1.413 issue 2 G.992.1 (G.DMT) G.992.2 (G.Lite)

Oct 15, 2008 | Siemens SpeedStream Modem (4100) (SS4100)

1 Answer

RCA Modem DCM315R


Just a bit of explanation. E0 interface is for inside network (LAN interface). E1 is for outside (ISP or WAN physical interface). Dialer1 is for PPPoE (the "actual"/logical WAN interface). The 1.0.0.13 is ISP provided static IP address for the use of the server. This configuration example is for running FTP server, which uses the standard TCP port 20 and 21.

The LAN uses 10.10.10.0 network with 255.255.255.0 subnet for both servers and workstations. All servers within the LAN use static IP address. The router is configured as DHCP server to give out IP info (IP addresses, subnet mask, DNS) to workstations that are configured as DHCP client.

Basically I suggest that you deploy NAT (Network Address Translation) and PAT (Port Address Translation) to setup your own servers behind Cisco router. The NAT is used to translate the ISP's given static IP address to your local IP address. The PAT is used to translate TCP ports (the port 20 and 21) between the two IP addresses.

When using NAT/PAT, keep in mind that the Internet-accessible servers are seen from the Internet as their NAT/PAT-ed IP address (the Public IP address) and not the local IP address (not the Private IP address). This understanding is very important when you or someone need to test connectivity to the server and/or when you need to create filter (access list or ACL for short) to allow only certain incoming traffic from the Internet and block others.

Side Note:
For more info on NAT/PAT concept, check out the following FAQ
»Cisco Forum FAQ »NAT and PAT; Introduction and Implementations

Instruments used in this illustration are pretty much standard for running your own servers. Please note that IP addresses, username, and password are changed. However, you could always modify the configuration to suit your situation.

This sample configuration assumes that you have a block of IP from ISP. There is a dedicated Public IP address for the router WAN interface (the Dialer1 interface) and another dedicated Public IP address for the server PAT IP address. If you only have a single Public IP address for both router WAN interface and server PAT IP address, there are several ways to configure the router.

One way is to use the same command as shown in sample configuration.

view plaincopy to clipboardprint?
  1. ip nat source static tcp 10.10.10.2 21 1.1.1.14 21 extendable
ip nat source static tcp 10.10.10.2 21 1.1.1.14 21 extendable
This one configuration way is suitable when you have static IP address from your ISP and you know exactly what the IP address is. In this case you have the 1.1.1.14 single static IP address for both the WAN interface and Public server IP address.

When you are unsure which IP address you receive from the ISP, or when your Public IP address keep changing; then another way to configure the static PAT is following

view plaincopy to clipboardprint?
  1. ip nat source static tcp 10.10.10.2 21 interface Dialer1 21 extendable
ip nat source static tcp 10.10.10.2 21 interface Dialer1 21 extendable
With situation of dynamic IP address, at some point you still need to know the exact Public IP address you receive from your ISP for server connection testing and production time. To find out, you can issue show ip interface brief command on the router. You will then see the associated WAN interface Public IP address.

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3 Answers

How to connect linksys router with aztech adsl modem


To setup your router
first check..
Connect the Broadband modem to the computer using an Ethernet cable without the router installed and make sure that the Internet connection is active. If it is not, contact your Internet Service Provider. If it can go online,
to setup connection..
Step 1:
Connect the Broadband modem to the router’s WAN or Internet port.
Step 2:
Connect the computer to any available numbered port (1, 2, 3 or 4).
NOTE: In this example, we’ll connect the computer to port number 3.
Step 3:
Make sure the power adapter is plugged to an available power outlet.
Step 4:
check if you are able to go online wired..
if not your router has to be configured first,
to config your router i need some more information
your internet service providers (isp)name , and how many computers do u have totally..

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4 Answers

D-Link Router & Actiontec Modem


Hi,

connect the Dlink router to the modem ActionTech->( wan port )Dlink. Login to the Router web-interface and go to STATUS & check the WAN IP address which would be modem ip address. if there is an ip address, do ping test on your computer to that ip address and see you are getting successful ping results. If so, the ping yahoo.com and see there is an successful ping for yahoo.
- If there is No WAN IP in STATUS Page, Connect the computer directly to the modem and let me know the ip address you are getting. Can I know your ISP name please?

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