Question about Computers & Internet

1 Answer

Router no connecting to the internet

I have a VSAT modem from the ISP,it supplies ip Addresses through DHCP.
I have a cisco router 881 with five LAN ports and one WAN port.
If i connect the WAN port to the modem its getting ip addresses Dynamically no problem.
I have a VLAN 1 with all the FE port 0-3 under vlan 1.
My problem is that i can ping the WAN port but i cannot ping the vsat modem.
Which means there is no internet for me.
I am stuck help.
Thank you in advance

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 73 Answers

You need to configure NAT on the router to permit the entire LAN to access internet

Example.
LAN Segnment is 192.168.1.0/24

1. Create an access-list to identify the local segment

2. Configure the Nat interfaces properly (NAT-INSIDE, NAT-OUTSIDE)

3. do the NAT configuration

i.e ip nat inside source list (ACLNUMBER) .....

Posted on Mar 17, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Talk talk, technical assistance


How did you connect the computer to the router. If you are using a DSL modem it will have a DHCP server in it that is allocating IP addresses across your network. If you added the router to the computer via a hub or network switch what is the computers ip .
address. Remove the WI FI router - turn off P.C and then Go to cmd or dos prompt if windows based system and type in ipconfig and press enter to see if ip addresses are 10.0.0.2 if they are your dlink router uses 192.168.0.1 so you need to make the dlink router ip addressand subnet setting to match the Modem ip addresses of the DHCP server. Change the ip address of the dlink router to be 10.0.0.2 and change the modem to allocate DHCP IP addresses from 10.0.0.10 to 10.0.0.255. Only do this if IP addresses are 10,0,0,1 to 10.0.0.,254 on the desktop p.c with the dsl or cable modem connected.without the router being involved. (you may need to ask the ISP what the user name and password is of the modem and it should be ip address xx.xx.xx.1 so type this into a browser to change the modem settings. 10.0.0.1 or 192.168.0.1 just remember if the modem is 192.168.0.1 so is the Wi router from d-link and you will have an ip clash problem)
. How do you do this by ethernet connection from only the desktop directly with only the Wi FI . router. Go to a internet browser and type in the URL 192.168.0.1 and then change the router ip address to match what the DSL modem DHCP issues..
Page 14 of Router instructions see http://files.dlink.com.au/Products/DIR-615/Manuals/DIR-615_C2_Manual_v3.10.pdf
in the manual it states to use a direct ethernet connection for the setup program but you need to be connected to the internet for it to work but if the IP addresses are wrong or clashing will have no internet. You also want to set the modem as the DCHP server and disable the DHCP server in the set up of the wi fi tand set the WI FI router default gateway as the ip address of the Modem. if any DHCP server options in the WI FI router sert to the modem ip address. .

Sep 08, 2014 | D-Link D Link Dir 615 Wireless Router...

1 Answer

How to configure router & switch


You shouldn't have to configure anything except the PC's should have IP and gateway set to auto.

Here is how it works:

A router connects two separate networks and manage the traffic between them.

In most home network applications the router connects your local group of computers and devices known as the LAN with the Internet, commonly called the WAN or Wide Area Network.

The router usually assigns unique Local IP addresses to all of the devices connected to it via a service known as DHCP. The addresses assigned by your router are private addresses http://en.wikipedia.org/wiki/Private_net... and are not routable across the Internet.

Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks. Computers that are connected to IP networks must be configured before they can communicate with other computers on the network. DHCP allows a computer to be configured automatically, eliminating the need for intervention by a network administrator. It also provides a central database for keeping track of computers that have been connected to the network. This prevents two computers from accidentally being configured with the same IP address. http://en.wikipedia.org/wiki/Dynamic_Hos...

Your cable or DSL modem will get a Public WAN IP address from your ISP's DHCP service. These public IP addresses are leased in blocks by your ISP and are Internet routeble. The modem is connected to the WAN port on your router. The router will manage the traffic between the devices on the LAN and the Internet.

If your 5 port switch is connected to one of the router's LAN ports and router's DHCP is on then it will configure the clients attached to It automatically.

Feb 04, 2013 | Computers & Internet

1 Answer

I have a belkin enhanced wireless router model # F6D4230-4v1. It was working fine and we lost internet connection for no reason. I have no idea how to fix the connection. There are 6 lights that should...


Troubleshooting Internet disconnects

Are all computers connected to the router affected?
If so, try this first:

  1. Unplug the power to the cable / DSL modem
  2. Connect the power to the router.
  3. Connect a computer to one of the LAN ports of the router.
  4. Restart your computer.
  5. Restore the router to factory defaults. Note: This will remove all previously configured settings.
  6. Once the router has gone through the restore it will then begin the reboot. When the reboot completes plug the power back into your modem.

This addresses a common scenario where the router has been connected to the Internet for an extended period and holds an IP address (DHCP lease) for a longer period of time than your Internet Service Provider (ISP) allows.

This is normal and does not indicate any issue with your Belkin router or ISP.

If the router is located where you cannot easily unplug it, you can restart it using the router's web-based interface. If your DHCP lease time seems to be extremely short, contact your ISP to see if there are other issues on the network.

In certain network scenarios, it may be helpful to turn off all the equipment on your network, and then turn it all back on. Leaving some devices unplugged for up to five minutes can also help. Try unplugging the router, any switches, and any cable or DSL modems. Shut down connected computers. Plug in the cable or DSL modem first.

Plug in the Belkin router second, and wait for the lights to cycle through the startup routine. This prevents another device from taking the DHCP lease. Lastly, start up your computer.


Are just wireless clients affected?
If so, focus on factors that affect wireless clients, such as:

  • Network selection and security
  • Hardware access control
  • Client TCP/IP settings
  • Signal strength
  • Sources of interference


Are just wired clients affected?

If so, check your network adapter settings. Check all cable routing, connections, and power supplies.


Can you connect to the Internet directly?
Set up a computer to connect to the Internet directly, without the router.
If you cannot connect to the Internet without the router, please contact your Internet Service Provider for assistance.


Check your signal strength

You may lose your wireless connection if you go beyond the range of the router, or if there is an obstacle between your computer and the router that blocks wireless signals. You can check signal strength by opening your wireless adapter's interface.


Is your modem configured correctly?

For Windows XP and 2000:


1. Connect your computer to your modem with an Ethernet cable.

2. Click Start, and go to Run.

start_run.jpg


3. In the Run box, type CMD and click OK.

cmd.jpg


4. In the DOS window that opens up, type ipconfig and then press Enter on your keyboard.

ipconfig.jpg



For Windows Vista/7:


1. Connect your computer to the modem with an Ethernet cable.

2. Click the Start button and in the Start Search box, type cmd. You can either press Enter on your keyboard or click on cmd.exe when it appears in your search list.

start_search_cmd.jpg


3. In the DOS window that opens up, type ipconfig and then press Enter on your keyboard.

vista_ipconfig.jpg


4. The IP address (or IPv4) will be a series of numbers following the pattern xxx.xxx.xxx.xxx (for example, 192.168.2.2).



After following either of the steps above, your IP address is 192.168.xxx.xxx, then your modem is also a router and will need to be bridged by your ISP. If your IP address begins with a 169.254, your computer did not receive an IP address from your ISP.

Jan 19, 2011 | Belkin Computers & Internet

1 Answer

My router is not getting the wireless signal it says no wireless what do i do to fix this


Are all computers connected to the router affected?
If so, try this first:

  1. Unplug the power to the cable / DSL modem
  2. Connect the power to the router.
  3. Connect a computer to one of the LAN ports of the router.
  4. Restart your computer.
  5. Restore the router to factory defaults. Note: This will remove all previously configured settings.
  6. Once the router has gone through the restore it will then begin the reboot. When the reboot completes plug the power back into your modem.

This addresses a common scenario where the router has been connected to the Internet for an extended period and holds an IP address (DHCP lease) for a longer period of time than your Internet Service Provider (ISP) allows.

This is normal and does not indicate any issue with your Belkin router or ISP.

If the router is located where you cannot easily unplug it, you can restart it using the router's web-based interface. If your DHCP lease time seems to be extremely short, contact your ISP to see if there are other issues on the network.

In certain network scenarios, it may be helpful to turn off all the equipment on your network, and then turn it all back on. Leaving some devices unplugged for up to five minutes can also help. Try unplugging the router, any switches, and any cable or DSL modems. Shut down connected computers. Plug in the cable or DSL modem first.

Plug in the Belkin router second, and wait for the lights to cycle through the startup routine. This prevents another device from taking the DHCP lease. Lastly, start up your computer.

Nov 04, 2010 | Belkin (F5D7230-4) Router (587009)

1 Answer

Just bought PB Ixtreme x5620. i am trying to connect my virgin broadband to the pc. i have netgear router which has the yellow cable in the moden and router and the blue cable in the PC and router. i can...


Hi,

Can you supply more detail of your network setup? You have a broadband modem, a seperate router and the PC.

For this setup cabling should be ....

1. Phone Socket (Pref. Master socket) to ADSL socket on modem

2. Modem LAN socket to Router WAN socket

3. Router LAN socket to PC Ethernet socket

Usually in this configuration you will have to switch off DHCP on either the modem or the router as they may both be trying to supply IP addresses to your PC. I would suggest disabling DHCP on the router and leaving the ADSL modem to supply IP addresses. If you do this you will have to setup the Router with a valid fixed IP.

Have fun!

Cheers,
Ripface.

Oct 25, 2009 | Computers & Internet

1 Answer

Link modem to router but keep getting warning that network cable is disconnected.


Hope the modem is and ADSL or any other Internet modem.
Plug the modem ethernet cable into the WAN port on the router. Go into the router and configure PPoE with username and password. Set up a LAN connection to the router on your computer. Make sure that your firewall is not blocking the router internet connection.
If the port is not lighting up, it may be a dead port.
You have to check the ip addresses. I thinks that might be the problem. You can check using Start_>RUN->cmd and hit enter. The type ipconfig /all. Check the ip address settings. If they are in different subnets, you have to configure it. I think your router assigns dhcp addresses. Modem is assigned an ip address from the Internet Service Provider. What you have to do is get a browser and go type the router address. Then authenticate yourself and change wan settings. Configure everything there to use the modem as a part of the router. (ISP information should be provided there).
Then make sure that your router doesn't assign a dhcp addres to the modem.
Try to configure and check. Hope this would help you. :) tc

Jun 14, 2009 | NetGear WGR614 Wireless Router

1 Answer

ADSL ISP provides same address for IP and Gateway


Can you manually change the WAN IP on the router?  If so, give it an IP like 123.12.167.5 and set the gateway address to 123.12.167.1.  If it asks for a subnet mask, give it 255.255.255.0.
If she has a Linksys router, you may need to change the operating "MODE" on it.  A lot of Linksys routers have 2 modes of operation---Router mode and Gateway mode.  For her configuration, make sure the Linksys is in Gateway mode.  This will fix the NAT problem.

Cheers!

Mar 26, 2009 | 2wire Wireless-G 802.11g ADSL Gateway

1 Answer

Cicso router 1841 not connecting to the internet


When using Public IP addresses on one interface, usually facing your ISP, and using Private IP addresses (AKA RFC 1918) on another interface, usually facing your LAN, one needs to utilize network address translation (NAT) in order to connect LAN computing resources to the Internet.
Cisco has a fantastic article on how to perform the necessary procedures on their web site.
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a0080093f8e.shtml

Sep 06, 2008 | Cisco (1841) Router (cisco1841)

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.

Feb 25, 2008 | RCA Cable Modem DCM315R (11603540)

2 Answers

Router cannot get IP with cisco 675 modem


Hi,

The issue may be due to the existence of two (2) DHCP servers; 1 in the Cisco 675 and the 2nd in the DLink DI-524. You need to disable the Cisco's DHCP server function and assign static IP add & config to the DLink WAN config. This way it will only be the DLink handing out IP adds to the network.

The workaround. Install your original configuration/setting without the DLink DI-524 - PC direct to the Cisco 675 (I am assuming through Ethernet ports). Verify that indeed you are connected to the Internet and can surf the net, check e-mails, etc. Check your Networking Connection Status. Log down your PC's IP Add, Subnet Mask, Default Gateway, DNS. For purposes of discussion, let's call this "N1".

After your Internet connection has been verified with your PC directly connected to the Cisco, remove the direct connection and connect the DLink DI-524 in between the Cisco router and your PC.

Log in to the DLink and modify WAN parameters using the "N1" configurations/settings.

It might be of help to disable any security (WEP WPA, MAC etc) at least while configuring.

Hope this be of help/idea. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

Feb 01, 2008 | Cisco 675 Router

Not finding what you are looking for?
Computers & Internet Logo

Related Topics:

653 people viewed this question

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

kakima

Level 3 Expert

102366 Answers

David Payne
David Payne

Level 3 Expert

14161 Answers

Are you a Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...