Step 7: Set Up an ISDN WAN Connection
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Introduction
This document explains how to set up an ISDN WAN connection on your
router.
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Requirements
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Set Up an ISDN WAN Connection
To set up an ISDN WAN connection, follow these steps:
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Click Create New Connection.
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Click Next at the Welcome to the ISDN
connection Wizard screen.
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Next to Switch type, select the switch type that
you entered in the Internet Worksheet (A30).
If you entered SPIDs in the Internet Worksheet (A33, A34), check
I have SPIDs. If you entered a SPID 1 number(A33), enter the
number next to SPID1. If you entered a SPID 2 number(A34),
enter the number next to SPID2. Click
Next.
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Next to Remote phone number, enter the ISP ISDN
Access Number that you entered in the Internet Worksheet (A35). Click
Next.
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If you checked Static in field B43 of the Internet Worksheet,
choose Static IP Address and enter the IP address and subnet
mask that you entered in the Internet Worksheet (B46, B41). If you checked
Dynamic in field B43 of the Internet Worksheet, choose Easy IP (IP
Negotiated). Click Next.
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If you selected PPP PAP or PPP CHAP authentication in the Internet
Worksheet (A37), check the appropriate type next to Authentication
Type. In the Username and Password
fields, enter the username and password that you entered in the Internet
Worksheet (A38, A39). Click Next.
Note: If you have already configured another WAN connection, SDM
displays the Backup Configuration screen. If you see the Backup Configuration
screen, choose Do not configure this connection as backup and
click Next.
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If you checked Static in field B43 of the Internet Worksheet, check
Default Static Route and choose Next Hop IP
Address. Enter the ISP Router IP address that you entered in the
Internet Worksheet (field B47). Click
Next.
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On the Summary screen, review your configuration to ensure that it
is accurate, and then click Finish.
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When the Commands Delivery Status screen appears, click
OK to confirm.
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Click Save to save your new
configuration.
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Verify the WAN Connection
To verify your WAN connection, follow these steps:
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Click Configure > Interfaces and
Connections.
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Select your new WAN interface and click Test
Connection.
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Click Automatically determined by SDM, and then
click Start to begin the test.
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SDM displays a window that indicates whether or not the test was
successful.
Click OK to close the Information window.
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If the test is successful, proceed to the next step.
If the test failed, click Details to display the
interface state. Note the Interface State and proceed to
Troubleshoot WAN
Connection.
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Click Close to exit the testing
interface.
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Click File > Exit to exit
SDM.
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Next Step
You have now set up an ISDN WAN connection.
You can now set up firewall and security options on your router. For
instructions, refer to
Set Up
Internet Security on a Cisco Router.
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Troubleshoot the Procedure
This section provides information about common problems that you may
encounter. If this information does not solve your problem, contact the
SMB
Technical Assistance Center (SMB TAC) for assistance.
Problem
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Cause(s) and Suggested Solution(s)
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I need more information about my ISDN connection in order to
complete the configuration.
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Contact your Internet Service Provider (ISP) to confirm the
details of your ISDN connection.
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I set up my WAN connection but it does not function
properly.
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See the Troubleshoot the WAN
Connection section.
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I want to set up an ISDN connection in addition to my primary
Internet connection.
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Contact the
SMB
Technical Assistance Center (SMB TAC) for assistance.
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I want to set up an ISDN connection as a failover for my
primary Internet connection.
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Contact the
SMB
Technical Assistance Center (SMB TAC) for assistance.
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Troubleshoot the WAN Connection
Use the table to determine your problem and the appropriate
solution.
Interface physical status:
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Line Protocol Status
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Action
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Up
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Up
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This interface status indicates that the interface functions
properly and the router can communicate with the remote device on the
WAN.
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Administratively Down
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Down
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This interface status indicates that the interface is disabled
in the router configuration. To enable your interface, follow these
steps:
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Type interface bri0/0 and press
Enter.
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Type no shutdown and press
Enter.
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Type end to exit configuration
mode.
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Type write memory to save the new
configuration.
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Down
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Down
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This interface status indicates that the WAN interface is
unable to communicate with a remote device.
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Your router configurations do not match the configurations
used by your Internet Service Provider (ISP). Contact your ISP to verify that
you have the correct settings.
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A physical WAN connection is not in place. Ensure that the
router is properly plugged into the WAN connection and that your ISP has
completed installation of the WAN connection.
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Verify with your Internet Service Provider (ISP) that service
is ready for use. Make a note of your current interface state and your current
configuration before you contact your
ISP.
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Up
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Down
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This interface status indicates that the interface is enabled
and the router is physically connected to a remote WAN device but the interface
cannot communicate properly with the remote WAN device.
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Your configuration partially matches the settings used in the
ISP network. Contact your ISP to verify that you have the correct
settings.
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Check to ensure that you have the proper cable type attached
to your WAN connection. Make a note of your current interface state and your
current configuration before you contact your ISP. For more information about
cable types, refer to
Cable
Descriptions.
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Related Information